/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-figure3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 12:14:00,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 12:14:00,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 12:14:00,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 12:14:00,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 12:14:00,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 12:14:00,491 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 12:14:00,513 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 12:14:00,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 12:14:00,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 12:14:00,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 12:14:00,516 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 12:14:00,516 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 12:14:00,517 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 12:14:00,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 12:14:00,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 12:14:00,518 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 12:14:00,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 12:14:00,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 12:14:00,521 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 12:14:00,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 12:14:00,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 12:14:00,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 12:14:00,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 12:14:00,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 12:14:00,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 12:14:00,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 12:14:00,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 12:14:00,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 12:14:00,532 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-18 12:14:00,532 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 12:14:00,533 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 12:14:00,533 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 12:14:00,534 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 12:14:00,534 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 12:14:00,534 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 12:14:00,535 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 12:14:00,535 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 12:14:00,535 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 12:14:00,535 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 12:14:00,536 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 12:14:00,539 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2022-01-18 12:14:00,554 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 12:14:00,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 12:14:00,555 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 12:14:00,555 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 12:14:00,555 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 12:14:00,555 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 12:14:00,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 12:14:00,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 12:14:00,556 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 12:14:00,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 12:14:00,556 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 12:14:00,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 12:14:00,557 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 12:14:00,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 12:14:00,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 12:14:00,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 12:14:00,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 12:14:00,557 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 12:14:00,557 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 12:14:00,557 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 12:14:00,557 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 12:14:00,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 12:14:00,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 12:14:00,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 12:14:00,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 12:14:00,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 12:14:00,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 12:14:00,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 12:14:00,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 12:14:00,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 12:14:00,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 12:14:00,559 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 12:14:00,559 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 12:14:00,559 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 12:14:00,559 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 12:14:00,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 12:14:00,742 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 12:14:00,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 12:14:00,744 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 12:14:00,745 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 12:14:00,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-figure3.wvr.c [2022-01-18 12:14:00,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/413ea6030/45b0cc9c00394204957b5e4c49d83c75/FLAG08484ca2b [2022-01-18 12:14:01,116 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 12:14:01,116 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure3.wvr.c [2022-01-18 12:14:01,124 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/413ea6030/45b0cc9c00394204957b5e4c49d83c75/FLAG08484ca2b [2022-01-18 12:14:01,135 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/413ea6030/45b0cc9c00394204957b5e4c49d83c75 [2022-01-18 12:14:01,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 12:14:01,139 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 12:14:01,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 12:14:01,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 12:14:01,144 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 12:14:01,144 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 12:14:01" (1/1) ... [2022-01-18 12:14:01,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@783cd5ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:14:01, skipping insertion in model container [2022-01-18 12:14:01,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 12:14:01" (1/1) ... [2022-01-18 12:14:01,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 12:14:01,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 12:14:01,334 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure3.wvr.c[2121,2134] [2022-01-18 12:14:01,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 12:14:01,341 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 12:14:01,360 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure3.wvr.c[2121,2134] [2022-01-18 12:14:01,361 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 12:14:01,369 INFO L208 MainTranslator]: Completed translation [2022-01-18 12:14:01,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:14:01 WrapperNode [2022-01-18 12:14:01,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 12:14:01,371 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 12:14:01,371 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 12:14:01,371 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 12:14:01,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:14:01" (1/1) ... [2022-01-18 12:14:01,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:14:01" (1/1) ... [2022-01-18 12:14:01,400 INFO L137 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 72 [2022-01-18 12:14:01,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 12:14:01,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 12:14:01,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 12:14:01,401 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 12:14:01,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:14:01" (1/1) ... [2022-01-18 12:14:01,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:14:01" (1/1) ... [2022-01-18 12:14:01,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:14:01" (1/1) ... [2022-01-18 12:14:01,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:14:01" (1/1) ... [2022-01-18 12:14:01,409 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:14:01" (1/1) ... [2022-01-18 12:14:01,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:14:01" (1/1) ... [2022-01-18 12:14:01,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:14:01" (1/1) ... [2022-01-18 12:14:01,419 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 12:14:01,420 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 12:14:01,420 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 12:14:01,420 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 12:14:01,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:14:01" (1/1) ... [2022-01-18 12:14:01,430 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 12:14:01,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:01,449 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) [2022-01-18 12:14:01,467 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 [2022-01-18 12:14:01,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 12:14:01,477 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 12:14:01,477 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 12:14:01,478 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 12:14:01,478 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 12:14:01,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 12:14:01,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 12:14:01,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 12:14:01,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 12:14:01,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 12:14:01,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 12:14:01,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 12:14:01,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 12:14:01,478 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 12:14:01,479 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 12:14:01,548 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 12:14:01,549 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 12:14:01,669 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 12:14:01,687 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 12:14:01,687 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-18 12:14:01,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 12:14:01 BoogieIcfgContainer [2022-01-18 12:14:01,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 12:14:01,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 12:14:01,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 12:14:01,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 12:14:01,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 12:14:01" (1/3) ... [2022-01-18 12:14:01,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6727bf87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 12:14:01, skipping insertion in model container [2022-01-18 12:14:01,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 12:14:01" (2/3) ... [2022-01-18 12:14:01,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6727bf87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 12:14:01, skipping insertion in model container [2022-01-18 12:14:01,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 12:14:01" (3/3) ... [2022-01-18 12:14:01,701 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-figure3.wvr.c [2022-01-18 12:14:01,704 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 12:14:01,704 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 12:14:01,704 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 12:14:01,704 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 12:14:01,740 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,741 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,741 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,741 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,742 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,742 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,743 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,743 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,743 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,743 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,744 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,744 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,744 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,744 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,744 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,744 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,744 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,744 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,745 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,745 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,745 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,745 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,745 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,746 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,746 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,747 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,747 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,747 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,747 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,748 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,748 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,748 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,748 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,748 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,757 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,757 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,758 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,758 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,758 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,758 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,758 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,758 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,758 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,759 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,760 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,761 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,761 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,761 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,762 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,762 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,762 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,762 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,762 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,762 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~i~1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 12:14:01,765 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 12:14:01,794 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 12:14:01,798 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 12:14:01,798 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 12:14:01,806 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 88 places, 87 transitions, 190 flow [2022-01-18 12:14:01,876 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 447 states, 446 states have (on average 2.6412556053811658) internal successors, (1178), 446 states have internal predecessors, (1178), 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) [2022-01-18 12:14:01,879 INFO L276 IsEmpty]: Start isEmpty. Operand has 447 states, 446 states have (on average 2.6412556053811658) internal successors, (1178), 446 states have internal predecessors, (1178), 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) [2022-01-18 12:14:01,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-18 12:14:01,897 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:01,898 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:01,899 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:01,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:01,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1942784834, now seen corresponding path program 1 times [2022-01-18 12:14:01,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:01,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713627022] [2022-01-18 12:14:01,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:01,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:02,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:02,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:02,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713627022] [2022-01-18 12:14:02,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713627022] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:14:02,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:14:02,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 12:14:02,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640483804] [2022-01-18 12:14:02,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:14:02,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 12:14:02,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:02,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 12:14:02,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 12:14:02,116 INFO L87 Difference]: Start difference. First operand has 447 states, 446 states have (on average 2.6412556053811658) internal successors, (1178), 446 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 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) [2022-01-18 12:14:02,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:02,159 INFO L93 Difference]: Finished difference Result 447 states and 1095 transitions. [2022-01-18 12:14:02,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 12:14:02,162 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 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 60 [2022-01-18 12:14:02,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:02,182 INFO L225 Difference]: With dead ends: 447 [2022-01-18 12:14:02,182 INFO L226 Difference]: Without dead ends: 445 [2022-01-18 12:14:02,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 12:14:02,189 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:02,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:14:02,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2022-01-18 12:14:02,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2022-01-18 12:14:02,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 2.4617117117117115) internal successors, (1093), 444 states have internal predecessors, (1093), 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) [2022-01-18 12:14:02,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1093 transitions. [2022-01-18 12:14:02,252 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1093 transitions. Word has length 60 [2022-01-18 12:14:02,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:02,253 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 1093 transitions. [2022-01-18 12:14:02,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 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) [2022-01-18 12:14:02,253 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1093 transitions. [2022-01-18 12:14:02,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-18 12:14:02,255 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:02,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:02,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 12:14:02,255 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:02,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:02,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1057361610, now seen corresponding path program 1 times [2022-01-18 12:14:02,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:02,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118504514] [2022-01-18 12:14:02,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:02,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:02,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:02,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:02,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118504514] [2022-01-18 12:14:02,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118504514] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:14:02,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:14:02,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 12:14:02,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275650381] [2022-01-18 12:14:02,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:14:02,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 12:14:02,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:02,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 12:14:02,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:14:02,368 INFO L87 Difference]: Start difference. First operand 445 states and 1093 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2022-01-18 12:14:02,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:02,413 INFO L93 Difference]: Finished difference Result 607 states and 1465 transitions. [2022-01-18 12:14:02,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 12:14:02,413 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2022-01-18 12:14:02,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:02,415 INFO L225 Difference]: With dead ends: 607 [2022-01-18 12:14:02,416 INFO L226 Difference]: Without dead ends: 493 [2022-01-18 12:14:02,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 12:14:02,417 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 6 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:02,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 220 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:14:02,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2022-01-18 12:14:02,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 481. [2022-01-18 12:14:02,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 2.4479166666666665) internal successors, (1175), 480 states have internal predecessors, (1175), 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) [2022-01-18 12:14:02,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 1175 transitions. [2022-01-18 12:14:02,428 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 1175 transitions. Word has length 60 [2022-01-18 12:14:02,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:02,429 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 1175 transitions. [2022-01-18 12:14:02,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2022-01-18 12:14:02,429 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 1175 transitions. [2022-01-18 12:14:02,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-18 12:14:02,431 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:02,431 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:02,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 12:14:02,431 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:02,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:02,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1205009006, now seen corresponding path program 1 times [2022-01-18 12:14:02,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:02,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95013286] [2022-01-18 12:14:02,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:02,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:02,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:02,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:02,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95013286] [2022-01-18 12:14:02,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95013286] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:14:02,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:14:02,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 12:14:02,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388022790] [2022-01-18 12:14:02,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:14:02,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 12:14:02,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:02,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 12:14:02,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:14:02,525 INFO L87 Difference]: Start difference. First operand 481 states and 1175 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-01-18 12:14:02,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:02,599 INFO L93 Difference]: Finished difference Result 673 states and 1670 transitions. [2022-01-18 12:14:02,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 12:14:02,599 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2022-01-18 12:14:02,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:02,603 INFO L225 Difference]: With dead ends: 673 [2022-01-18 12:14:02,604 INFO L226 Difference]: Without dead ends: 661 [2022-01-18 12:14:02,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:14:02,608 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 38 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:02,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 173 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:14:02,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-01-18 12:14:02,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 485. [2022-01-18 12:14:02,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 484 states have (on average 2.450413223140496) internal successors, (1186), 484 states have internal predecessors, (1186), 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) [2022-01-18 12:14:02,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 1186 transitions. [2022-01-18 12:14:02,628 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 1186 transitions. Word has length 65 [2022-01-18 12:14:02,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:02,629 INFO L470 AbstractCegarLoop]: Abstraction has 485 states and 1186 transitions. [2022-01-18 12:14:02,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-01-18 12:14:02,629 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 1186 transitions. [2022-01-18 12:14:02,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-18 12:14:02,632 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:02,632 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:02,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 12:14:02,633 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:02,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:02,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1184291620, now seen corresponding path program 2 times [2022-01-18 12:14:02,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:02,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860663528] [2022-01-18 12:14:02,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:02,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:02,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:02,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:02,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860663528] [2022-01-18 12:14:02,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860663528] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:14:02,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:14:02,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 12:14:02,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845327378] [2022-01-18 12:14:02,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:14:02,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 12:14:02,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:02,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 12:14:02,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:14:02,784 INFO L87 Difference]: Start difference. First operand 485 states and 1186 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-01-18 12:14:02,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:02,829 INFO L93 Difference]: Finished difference Result 673 states and 1682 transitions. [2022-01-18 12:14:02,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 12:14:02,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2022-01-18 12:14:02,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:02,832 INFO L225 Difference]: With dead ends: 673 [2022-01-18 12:14:02,832 INFO L226 Difference]: Without dead ends: 673 [2022-01-18 12:14:02,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:14:02,840 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 36 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:02,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 215 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:14:02,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2022-01-18 12:14:02,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 497. [2022-01-18 12:14:02,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 496 states have (on average 2.4576612903225805) internal successors, (1219), 496 states have internal predecessors, (1219), 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) [2022-01-18 12:14:02,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 1219 transitions. [2022-01-18 12:14:02,853 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 1219 transitions. Word has length 65 [2022-01-18 12:14:02,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:02,855 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 1219 transitions. [2022-01-18 12:14:02,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-01-18 12:14:02,855 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 1219 transitions. [2022-01-18 12:14:02,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-18 12:14:02,856 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:02,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:02,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 12:14:02,857 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:02,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:02,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1828792382, now seen corresponding path program 3 times [2022-01-18 12:14:02,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:02,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917966663] [2022-01-18 12:14:02,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:02,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:02,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:03,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:03,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:03,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917966663] [2022-01-18 12:14:03,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917966663] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:14:03,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:14:03,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 12:14:03,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455093193] [2022-01-18 12:14:03,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:14:03,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 12:14:03,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:03,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 12:14:03,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:14:03,009 INFO L87 Difference]: Start difference. First operand 497 states and 1219 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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) [2022-01-18 12:14:03,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:03,065 INFO L93 Difference]: Finished difference Result 813 states and 2058 transitions. [2022-01-18 12:14:03,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 12:14:03,065 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 65 [2022-01-18 12:14:03,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:03,068 INFO L225 Difference]: With dead ends: 813 [2022-01-18 12:14:03,068 INFO L226 Difference]: Without dead ends: 813 [2022-01-18 12:14:03,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:14:03,069 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 59 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:03,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 241 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:14:03,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2022-01-18 12:14:03,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 524. [2022-01-18 12:14:03,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 2.4684512428298278) internal successors, (1291), 523 states have internal predecessors, (1291), 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) [2022-01-18 12:14:03,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1291 transitions. [2022-01-18 12:14:03,083 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1291 transitions. Word has length 65 [2022-01-18 12:14:03,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:03,083 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 1291 transitions. [2022-01-18 12:14:03,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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) [2022-01-18 12:14:03,083 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1291 transitions. [2022-01-18 12:14:03,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-18 12:14:03,084 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:03,084 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:03,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 12:14:03,085 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:03,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:03,085 INFO L85 PathProgramCache]: Analyzing trace with hash 780130990, now seen corresponding path program 4 times [2022-01-18 12:14:03,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:03,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803598042] [2022-01-18 12:14:03,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:03,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:03,186 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:03,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:03,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803598042] [2022-01-18 12:14:03,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803598042] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:14:03,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:14:03,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 12:14:03,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997010352] [2022-01-18 12:14:03,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:14:03,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 12:14:03,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:03,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 12:14:03,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:14:03,188 INFO L87 Difference]: Start difference. First operand 524 states and 1291 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-01-18 12:14:03,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:03,224 INFO L93 Difference]: Finished difference Result 672 states and 1677 transitions. [2022-01-18 12:14:03,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 12:14:03,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2022-01-18 12:14:03,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:03,228 INFO L225 Difference]: With dead ends: 672 [2022-01-18 12:14:03,228 INFO L226 Difference]: Without dead ends: 672 [2022-01-18 12:14:03,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:14:03,230 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 41 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:03,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 176 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:14:03,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-01-18 12:14:03,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 556. [2022-01-18 12:14:03,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 555 states have (on average 2.4684684684684686) internal successors, (1370), 555 states have internal predecessors, (1370), 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) [2022-01-18 12:14:03,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1370 transitions. [2022-01-18 12:14:03,245 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1370 transitions. Word has length 65 [2022-01-18 12:14:03,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:03,245 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 1370 transitions. [2022-01-18 12:14:03,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-01-18 12:14:03,245 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1370 transitions. [2022-01-18 12:14:03,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-18 12:14:03,247 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:03,247 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:03,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 12:14:03,247 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:03,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:03,248 INFO L85 PathProgramCache]: Analyzing trace with hash 135630228, now seen corresponding path program 5 times [2022-01-18 12:14:03,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:03,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42603012] [2022-01-18 12:14:03,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:03,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:03,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:03,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:03,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42603012] [2022-01-18 12:14:03,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42603012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:14:03,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:14:03,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 12:14:03,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107544400] [2022-01-18 12:14:03,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:14:03,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 12:14:03,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:03,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 12:14:03,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:14:03,368 INFO L87 Difference]: Start difference. First operand 556 states and 1370 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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) [2022-01-18 12:14:03,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:03,439 INFO L93 Difference]: Finished difference Result 812 states and 2053 transitions. [2022-01-18 12:14:03,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 12:14:03,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 65 [2022-01-18 12:14:03,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:03,442 INFO L225 Difference]: With dead ends: 812 [2022-01-18 12:14:03,442 INFO L226 Difference]: Without dead ends: 812 [2022-01-18 12:14:03,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:14:03,443 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 56 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:03,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 336 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:14:03,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-01-18 12:14:03,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 544. [2022-01-18 12:14:03,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 543 states have (on average 2.4622467771639043) internal successors, (1337), 543 states have internal predecessors, (1337), 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) [2022-01-18 12:14:03,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 1337 transitions. [2022-01-18 12:14:03,455 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 1337 transitions. Word has length 65 [2022-01-18 12:14:03,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:03,456 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 1337 transitions. [2022-01-18 12:14:03,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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) [2022-01-18 12:14:03,456 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 1337 transitions. [2022-01-18 12:14:03,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-18 12:14:03,458 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:03,458 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:03,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 12:14:03,458 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:03,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:03,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1678651950, now seen corresponding path program 6 times [2022-01-18 12:14:03,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:03,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542913620] [2022-01-18 12:14:03,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:03,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:03,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:03,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:03,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:03,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542913620] [2022-01-18 12:14:03,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542913620] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:14:03,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:14:03,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 12:14:03,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601444655] [2022-01-18 12:14:03,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:14:03,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 12:14:03,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:03,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 12:14:03,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:14:03,524 INFO L87 Difference]: Start difference. First operand 544 states and 1337 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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) [2022-01-18 12:14:03,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:03,601 INFO L93 Difference]: Finished difference Result 843 states and 2140 transitions. [2022-01-18 12:14:03,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 12:14:03,602 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 65 [2022-01-18 12:14:03,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:03,604 INFO L225 Difference]: With dead ends: 843 [2022-01-18 12:14:03,604 INFO L226 Difference]: Without dead ends: 843 [2022-01-18 12:14:03,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-18 12:14:03,605 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 88 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:03,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 345 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:14:03,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-01-18 12:14:03,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 524. [2022-01-18 12:14:03,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 2.4684512428298278) internal successors, (1291), 523 states have internal predecessors, (1291), 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) [2022-01-18 12:14:03,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1291 transitions. [2022-01-18 12:14:03,615 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1291 transitions. Word has length 65 [2022-01-18 12:14:03,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:03,615 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 1291 transitions. [2022-01-18 12:14:03,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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) [2022-01-18 12:14:03,615 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1291 transitions. [2022-01-18 12:14:03,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-18 12:14:03,616 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:03,616 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:03,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 12:14:03,616 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:03,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:03,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1844803496, now seen corresponding path program 7 times [2022-01-18 12:14:03,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:03,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143493158] [2022-01-18 12:14:03,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:03,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:03,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:03,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:03,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:03,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143493158] [2022-01-18 12:14:03,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143493158] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:14:03,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:14:03,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 12:14:03,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498387435] [2022-01-18 12:14:03,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:14:03,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 12:14:03,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:03,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 12:14:03,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:14:03,658 INFO L87 Difference]: Start difference. First operand 524 states and 1291 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-01-18 12:14:03,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:03,700 INFO L93 Difference]: Finished difference Result 790 states and 1951 transitions. [2022-01-18 12:14:03,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 12:14:03,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2022-01-18 12:14:03,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:03,702 INFO L225 Difference]: With dead ends: 790 [2022-01-18 12:14:03,702 INFO L226 Difference]: Without dead ends: 754 [2022-01-18 12:14:03,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-18 12:14:03,703 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 63 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:03,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 242 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:14:03,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2022-01-18 12:14:03,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 580. [2022-01-18 12:14:03,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 579 states have (on average 2.5025906735751295) internal successors, (1449), 579 states have internal predecessors, (1449), 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) [2022-01-18 12:14:03,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1449 transitions. [2022-01-18 12:14:03,713 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1449 transitions. Word has length 65 [2022-01-18 12:14:03,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:03,713 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 1449 transitions. [2022-01-18 12:14:03,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-01-18 12:14:03,714 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1449 transitions. [2022-01-18 12:14:03,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-18 12:14:03,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:03,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:03,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 12:14:03,715 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:03,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:03,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1977551010, now seen corresponding path program 8 times [2022-01-18 12:14:03,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:03,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375297818] [2022-01-18 12:14:03,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:03,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:03,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:03,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:03,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375297818] [2022-01-18 12:14:03,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375297818] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:14:03,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:14:03,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 12:14:03,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206001030] [2022-01-18 12:14:03,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:14:03,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 12:14:03,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:03,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 12:14:03,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:14:03,761 INFO L87 Difference]: Start difference. First operand 580 states and 1449 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-01-18 12:14:03,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:03,795 INFO L93 Difference]: Finished difference Result 798 states and 1985 transitions. [2022-01-18 12:14:03,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 12:14:03,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2022-01-18 12:14:03,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:03,798 INFO L225 Difference]: With dead ends: 798 [2022-01-18 12:14:03,798 INFO L226 Difference]: Without dead ends: 798 [2022-01-18 12:14:03,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-18 12:14:03,798 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 43 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:03,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 212 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:14:03,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-01-18 12:14:03,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 588. [2022-01-18 12:14:03,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 587 states have (on average 2.4991482112436114) internal successors, (1467), 587 states have internal predecessors, (1467), 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) [2022-01-18 12:14:03,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1467 transitions. [2022-01-18 12:14:03,811 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1467 transitions. Word has length 65 [2022-01-18 12:14:03,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:03,811 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 1467 transitions. [2022-01-18 12:14:03,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2022-01-18 12:14:03,811 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1467 transitions. [2022-01-18 12:14:03,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-18 12:14:03,812 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:03,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:03,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 12:14:03,813 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:03,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:03,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1672915524, now seen corresponding path program 9 times [2022-01-18 12:14:03,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:03,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111644352] [2022-01-18 12:14:03,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:03,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:03,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:03,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:03,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111644352] [2022-01-18 12:14:03,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111644352] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:14:03,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 12:14:03,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 12:14:03,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857338506] [2022-01-18 12:14:03,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:14:03,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 12:14:03,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:03,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 12:14:03,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:14:03,875 INFO L87 Difference]: Start difference. First operand 588 states and 1467 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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) [2022-01-18 12:14:03,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:03,920 INFO L93 Difference]: Finished difference Result 719 states and 1804 transitions. [2022-01-18 12:14:03,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 12:14:03,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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 65 [2022-01-18 12:14:03,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:03,923 INFO L225 Difference]: With dead ends: 719 [2022-01-18 12:14:03,924 INFO L226 Difference]: Without dead ends: 719 [2022-01-18 12:14:03,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-01-18 12:14:03,924 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 41 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:03,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 290 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:14:03,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-01-18 12:14:03,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 492. [2022-01-18 12:14:03,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 491 states have (on average 2.441955193482688) internal successors, (1199), 491 states have internal predecessors, (1199), 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) [2022-01-18 12:14:03,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 1199 transitions. [2022-01-18 12:14:03,934 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 1199 transitions. Word has length 65 [2022-01-18 12:14:03,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:03,934 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 1199 transitions. [2022-01-18 12:14:03,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 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) [2022-01-18 12:14:03,935 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 1199 transitions. [2022-01-18 12:14:03,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-18 12:14:03,935 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:03,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:03,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-18 12:14:03,936 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:03,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:03,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1959986980, now seen corresponding path program 1 times [2022-01-18 12:14:03,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:03,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273098382] [2022-01-18 12:14:03,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:03,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:03,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:03,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:03,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273098382] [2022-01-18 12:14:03,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273098382] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:03,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795056874] [2022-01-18 12:14:03,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:03,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:03,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:03,998 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) [2022-01-18 12:14:03,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 12:14:04,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:04,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 12:14:04,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:04,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:14:04,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 12:14:04,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795056874] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 12:14:04,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 12:14:04,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 7 [2022-01-18 12:14:04,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638276374] [2022-01-18 12:14:04,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 12:14:04,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 12:14:04,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:04,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 12:14:04,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-18 12:14:04,220 INFO L87 Difference]: Start difference. First operand 492 states and 1199 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2022-01-18 12:14:04,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:04,267 INFO L93 Difference]: Finished difference Result 1185 states and 2967 transitions. [2022-01-18 12:14:04,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 12:14:04,268 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 70 [2022-01-18 12:14:04,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:04,272 INFO L225 Difference]: With dead ends: 1185 [2022-01-18 12:14:04,272 INFO L226 Difference]: Without dead ends: 996 [2022-01-18 12:14:04,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-18 12:14:04,273 INFO L933 BasicCegarLoop]: 91 mSDtfsCounter, 48 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:04,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 359 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 12:14:04,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2022-01-18 12:14:04,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 862. [2022-01-18 12:14:04,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 861 states have (on average 2.5516840882694543) internal successors, (2197), 861 states have internal predecessors, (2197), 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) [2022-01-18 12:14:04,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 2197 transitions. [2022-01-18 12:14:04,289 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 2197 transitions. Word has length 70 [2022-01-18 12:14:04,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:04,289 INFO L470 AbstractCegarLoop]: Abstraction has 862 states and 2197 transitions. [2022-01-18 12:14:04,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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) [2022-01-18 12:14:04,289 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 2197 transitions. [2022-01-18 12:14:04,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:14:04,290 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:04,291 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:04,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:04,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-18 12:14:04,507 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:04,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:04,507 INFO L85 PathProgramCache]: Analyzing trace with hash 864971766, now seen corresponding path program 2 times [2022-01-18 12:14:04,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:04,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698620604] [2022-01-18 12:14:04,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:04,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:04,615 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:04,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:04,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698620604] [2022-01-18 12:14:04,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698620604] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:04,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994910871] [2022-01-18 12:14:04,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:14:04,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:04,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:04,616 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) [2022-01-18 12:14:04,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 12:14:04,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:14:04,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:04,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:14:04,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:04,850 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:04,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:05,101 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:05,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994910871] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:05,101 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:05,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:14:05,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473005451] [2022-01-18 12:14:05,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:05,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:14:05,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:05,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:14:05,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:14:05,102 INFO L87 Difference]: Start difference. First operand 862 states and 2197 transitions. Second operand has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 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) [2022-01-18 12:14:07,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:07,458 INFO L93 Difference]: Finished difference Result 3702 states and 9759 transitions. [2022-01-18 12:14:07,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-18 12:14:07,460 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 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 75 [2022-01-18 12:14:07,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:07,472 INFO L225 Difference]: With dead ends: 3702 [2022-01-18 12:14:07,473 INFO L226 Difference]: Without dead ends: 3654 [2022-01-18 12:14:07,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2059 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=993, Invalid=5169, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 12:14:07,474 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 649 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1510 SdHoareTripleChecker+Invalid, 759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:07,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [649 Valid, 1510 Invalid, 759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:14:07,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2022-01-18 12:14:07,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 1578. [2022-01-18 12:14:07,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1578 states, 1577 states have (on average 2.7228915662650603) internal successors, (4294), 1577 states have internal predecessors, (4294), 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) [2022-01-18 12:14:07,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 4294 transitions. [2022-01-18 12:14:07,522 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 4294 transitions. Word has length 75 [2022-01-18 12:14:07,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:07,523 INFO L470 AbstractCegarLoop]: Abstraction has 1578 states and 4294 transitions. [2022-01-18 12:14:07,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.526315789473684) internal successors, (105), 19 states have internal predecessors, (105), 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) [2022-01-18 12:14:07,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 4294 transitions. [2022-01-18 12:14:07,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:14:07,526 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:07,526 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:07,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-18 12:14:07,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-18 12:14:07,740 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:07,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:07,740 INFO L85 PathProgramCache]: Analyzing trace with hash 885689152, now seen corresponding path program 3 times [2022-01-18 12:14:07,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:07,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028157795] [2022-01-18 12:14:07,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:07,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:07,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:07,847 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:07,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:07,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028157795] [2022-01-18 12:14:07,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028157795] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:07,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678597639] [2022-01-18 12:14:07,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:14:07,848 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:07,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:07,849 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) [2022-01-18 12:14:07,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 12:14:07,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:14:07,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:07,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:14:07,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:08,057 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:08,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:08,257 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:08,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678597639] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:08,257 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:08,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-01-18 12:14:08,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138844722] [2022-01-18 12:14:08,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:08,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 12:14:08,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:08,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 12:14:08,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2022-01-18 12:14:08,258 INFO L87 Difference]: Start difference. First operand 1578 states and 4294 transitions. Second operand has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 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) [2022-01-18 12:14:11,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:11,770 INFO L93 Difference]: Finished difference Result 4718 states and 12452 transitions. [2022-01-18 12:14:11,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2022-01-18 12:14:11,771 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 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 75 [2022-01-18 12:14:11,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:11,786 INFO L225 Difference]: With dead ends: 4718 [2022-01-18 12:14:11,787 INFO L226 Difference]: Without dead ends: 4658 [2022-01-18 12:14:11,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3570 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1817, Invalid=8083, Unknown=0, NotChecked=0, Total=9900 [2022-01-18 12:14:11,789 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 878 mSDsluCounter, 1919 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 1921 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:11,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [878 Valid, 1921 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:14:11,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4658 states. [2022-01-18 12:14:11,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4658 to 1633. [2022-01-18 12:14:11,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1633 states, 1632 states have (on average 2.7150735294117645) internal successors, (4431), 1632 states have internal predecessors, (4431), 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) [2022-01-18 12:14:11,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 4431 transitions. [2022-01-18 12:14:11,833 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 4431 transitions. Word has length 75 [2022-01-18 12:14:11,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:11,834 INFO L470 AbstractCegarLoop]: Abstraction has 1633 states and 4431 transitions. [2022-01-18 12:14:11,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.2) internal successors, (104), 20 states have internal predecessors, (104), 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) [2022-01-18 12:14:11,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 4431 transitions. [2022-01-18 12:14:11,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:14:11,837 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:11,837 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:11,855 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:12,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:12,051 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:12,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:12,052 INFO L85 PathProgramCache]: Analyzing trace with hash 487460194, now seen corresponding path program 4 times [2022-01-18 12:14:12,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:12,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626975961] [2022-01-18 12:14:12,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:12,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:12,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:12,146 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:12,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:12,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626975961] [2022-01-18 12:14:12,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626975961] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:12,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129163793] [2022-01-18 12:14:12,146 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:14:12,147 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:12,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:12,147 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) [2022-01-18 12:14:12,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 12:14:12,197 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:14:12,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:12,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:14:12,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:12,379 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:12,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:12,574 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:12,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129163793] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:12,574 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:12,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:14:12,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340566013] [2022-01-18 12:14:12,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:12,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:14:12,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:12,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:14:12,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:14:12,575 INFO L87 Difference]: Start difference. First operand 1633 states and 4431 transitions. Second operand has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 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) [2022-01-18 12:14:16,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:16,857 INFO L93 Difference]: Finished difference Result 5290 states and 14311 transitions. [2022-01-18 12:14:16,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2022-01-18 12:14:16,857 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 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 75 [2022-01-18 12:14:16,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:16,869 INFO L225 Difference]: With dead ends: 5290 [2022-01-18 12:14:16,869 INFO L226 Difference]: Without dead ends: 5125 [2022-01-18 12:14:16,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6103 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2438, Invalid=13818, Unknown=0, NotChecked=0, Total=16256 [2022-01-18 12:14:16,873 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 866 mSDsluCounter, 1821 mSDsCounter, 0 mSdLazyCounter, 916 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 1834 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:16,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [866 Valid, 1834 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 916 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:14:16,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5125 states. [2022-01-18 12:14:16,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5125 to 2188. [2022-01-18 12:14:16,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 2187 states have (on average 2.763145861911294) internal successors, (6043), 2187 states have internal predecessors, (6043), 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) [2022-01-18 12:14:16,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 6043 transitions. [2022-01-18 12:14:16,925 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 6043 transitions. Word has length 75 [2022-01-18 12:14:16,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:16,925 INFO L470 AbstractCegarLoop]: Abstraction has 2188 states and 6043 transitions. [2022-01-18 12:14:16,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 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) [2022-01-18 12:14:16,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 6043 transitions. [2022-01-18 12:14:16,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:14:16,929 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:16,929 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:16,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:17,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-18 12:14:17,143 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:17,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:17,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1037023166, now seen corresponding path program 5 times [2022-01-18 12:14:17,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:17,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830360492] [2022-01-18 12:14:17,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:17,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:17,250 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:17,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:17,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830360492] [2022-01-18 12:14:17,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830360492] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:17,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402237521] [2022-01-18 12:14:17,250 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:14:17,250 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:17,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:17,251 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) [2022-01-18 12:14:17,252 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 12:14:17,298 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:14:17,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:17,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:14:17,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:17,464 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:17,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:17,660 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:17,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402237521] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:17,660 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:17,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:14:17,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411661244] [2022-01-18 12:14:17,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:17,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:14:17,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:17,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:14:17,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:14:17,661 INFO L87 Difference]: Start difference. First operand 2188 states and 6043 transitions. Second operand has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 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) [2022-01-18 12:14:19,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:19,884 INFO L93 Difference]: Finished difference Result 6064 states and 16644 transitions. [2022-01-18 12:14:19,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-18 12:14:19,884 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 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 75 [2022-01-18 12:14:19,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:19,895 INFO L225 Difference]: With dead ends: 6064 [2022-01-18 12:14:19,896 INFO L226 Difference]: Without dead ends: 5884 [2022-01-18 12:14:19,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2306 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1258, Invalid=6052, Unknown=0, NotChecked=0, Total=7310 [2022-01-18 12:14:19,897 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 524 mSDsluCounter, 1851 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 1027 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:19,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 1817 Invalid, 1027 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:14:19,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5884 states. [2022-01-18 12:14:19,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5884 to 2812. [2022-01-18 12:14:19,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2812 states, 2811 states have (on average 2.7812166488794023) internal successors, (7818), 2811 states have internal predecessors, (7818), 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) [2022-01-18 12:14:19,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 7818 transitions. [2022-01-18 12:14:19,958 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 7818 transitions. Word has length 75 [2022-01-18 12:14:19,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:19,958 INFO L470 AbstractCegarLoop]: Abstraction has 2812 states and 7818 transitions. [2022-01-18 12:14:19,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 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) [2022-01-18 12:14:19,958 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 7818 transitions. [2022-01-18 12:14:19,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:14:19,962 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:19,962 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:19,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:20,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-18 12:14:20,179 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:20,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:20,179 INFO L85 PathProgramCache]: Analyzing trace with hash 994302006, now seen corresponding path program 6 times [2022-01-18 12:14:20,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:20,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804693148] [2022-01-18 12:14:20,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:20,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:20,276 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:20,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:20,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804693148] [2022-01-18 12:14:20,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804693148] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:20,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901387524] [2022-01-18 12:14:20,277 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:14:20,277 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:20,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:20,278 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) [2022-01-18 12:14:20,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 12:14:20,326 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 12:14:20,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:20,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:14:20,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:20,482 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:20,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:20,664 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:20,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901387524] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:20,664 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:20,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-18 12:14:20,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502511165] [2022-01-18 12:14:20,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:20,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 12:14:20,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:20,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 12:14:20,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-01-18 12:14:20,666 INFO L87 Difference]: Start difference. First operand 2812 states and 7818 transitions. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 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) [2022-01-18 12:14:22,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:22,475 INFO L93 Difference]: Finished difference Result 6577 states and 18166 transitions. [2022-01-18 12:14:22,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-18 12:14:22,475 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 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 75 [2022-01-18 12:14:22,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:22,487 INFO L225 Difference]: With dead ends: 6577 [2022-01-18 12:14:22,487 INFO L226 Difference]: Without dead ends: 6529 [2022-01-18 12:14:22,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2359 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1048, Invalid=5758, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 12:14:22,489 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 478 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:22,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 1536 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:14:22,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6529 states. [2022-01-18 12:14:22,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6529 to 4004. [2022-01-18 12:14:22,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4004 states, 4003 states have (on average 2.8258805895578316) internal successors, (11312), 4003 states have internal predecessors, (11312), 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) [2022-01-18 12:14:22,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4004 states to 4004 states and 11312 transitions. [2022-01-18 12:14:22,585 INFO L78 Accepts]: Start accepts. Automaton has 4004 states and 11312 transitions. Word has length 75 [2022-01-18 12:14:22,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:22,585 INFO L470 AbstractCegarLoop]: Abstraction has 4004 states and 11312 transitions. [2022-01-18 12:14:22,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 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) [2022-01-18 12:14:22,585 INFO L276 IsEmpty]: Start isEmpty. Operand 4004 states and 11312 transitions. [2022-01-18 12:14:22,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:14:22,606 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:22,607 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:22,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:22,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-18 12:14:22,819 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:22,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:22,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1015019392, now seen corresponding path program 7 times [2022-01-18 12:14:22,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:22,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260342984] [2022-01-18 12:14:22,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:22,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:22,919 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:22,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:22,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260342984] [2022-01-18 12:14:22,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260342984] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:22,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952201394] [2022-01-18 12:14:22,919 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:14:22,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:22,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:22,920 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) [2022-01-18 12:14:22,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 12:14:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:22,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:14:22,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:23,122 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:23,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:23,307 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:23,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952201394] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:23,307 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:23,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:14:23,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404432688] [2022-01-18 12:14:23,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:23,308 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:14:23,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:23,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:14:23,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:14:23,309 INFO L87 Difference]: Start difference. First operand 4004 states and 11312 transitions. Second operand has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 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) [2022-01-18 12:14:26,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:26,455 INFO L93 Difference]: Finished difference Result 7727 states and 21227 transitions. [2022-01-18 12:14:26,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-01-18 12:14:26,456 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 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 75 [2022-01-18 12:14:26,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:26,470 INFO L225 Difference]: With dead ends: 7727 [2022-01-18 12:14:26,470 INFO L226 Difference]: Without dead ends: 7667 [2022-01-18 12:14:26,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4567 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2049, Invalid=10161, Unknown=0, NotChecked=0, Total=12210 [2022-01-18 12:14:26,473 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 812 mSDsluCounter, 1686 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 812 SdHoareTripleChecker+Valid, 1704 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:26,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [812 Valid, 1704 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:14:26,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7667 states. [2022-01-18 12:14:26,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7667 to 4036. [2022-01-18 12:14:26,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4036 states, 4035 states have (on average 2.825278810408922) internal successors, (11400), 4035 states have internal predecessors, (11400), 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) [2022-01-18 12:14:26,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4036 states to 4036 states and 11400 transitions. [2022-01-18 12:14:26,611 INFO L78 Accepts]: Start accepts. Automaton has 4036 states and 11400 transitions. Word has length 75 [2022-01-18 12:14:26,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:26,611 INFO L470 AbstractCegarLoop]: Abstraction has 4036 states and 11400 transitions. [2022-01-18 12:14:26,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 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) [2022-01-18 12:14:26,611 INFO L276 IsEmpty]: Start isEmpty. Operand 4036 states and 11400 transitions. [2022-01-18 12:14:26,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:14:26,619 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:26,619 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:26,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:26,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:26,835 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:26,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:26,835 INFO L85 PathProgramCache]: Analyzing trace with hash 616790434, now seen corresponding path program 8 times [2022-01-18 12:14:26,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:26,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596354722] [2022-01-18 12:14:26,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:26,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:26,918 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:26,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:26,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596354722] [2022-01-18 12:14:26,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596354722] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:26,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745662290] [2022-01-18 12:14:26,919 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:14:26,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:26,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:26,936 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) [2022-01-18 12:14:26,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 12:14:26,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:14:26,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:26,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:14:26,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:27,155 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:27,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:27,343 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:27,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745662290] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:27,343 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:27,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-18 12:14:27,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248628955] [2022-01-18 12:14:27,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:27,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 12:14:27,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:27,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 12:14:27,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-01-18 12:14:27,344 INFO L87 Difference]: Start difference. First operand 4036 states and 11400 transitions. Second operand has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 states have internal predecessors, (102), 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) [2022-01-18 12:14:29,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:29,767 INFO L93 Difference]: Finished difference Result 7437 states and 20688 transitions. [2022-01-18 12:14:29,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-01-18 12:14:29,768 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 states have internal predecessors, (102), 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 75 [2022-01-18 12:14:29,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:29,797 INFO L225 Difference]: With dead ends: 7437 [2022-01-18 12:14:29,797 INFO L226 Difference]: Without dead ends: 7332 [2022-01-18 12:14:29,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4055 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1699, Invalid=9431, Unknown=0, NotChecked=0, Total=11130 [2022-01-18 12:14:29,799 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 628 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:29,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 1387 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:14:29,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7332 states. [2022-01-18 12:14:29,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7332 to 4376. [2022-01-18 12:14:29,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4376 states, 4375 states have (on average 2.824) internal successors, (12355), 4375 states have internal predecessors, (12355), 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) [2022-01-18 12:14:29,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4376 states to 4376 states and 12355 transitions. [2022-01-18 12:14:29,886 INFO L78 Accepts]: Start accepts. Automaton has 4376 states and 12355 transitions. Word has length 75 [2022-01-18 12:14:29,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:29,886 INFO L470 AbstractCegarLoop]: Abstraction has 4376 states and 12355 transitions. [2022-01-18 12:14:29,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 states have internal predecessors, (102), 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) [2022-01-18 12:14:29,886 INFO L276 IsEmpty]: Start isEmpty. Operand 4376 states and 12355 transitions. [2022-01-18 12:14:29,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:14:29,894 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:29,894 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:29,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:30,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:30,107 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:30,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:30,108 INFO L85 PathProgramCache]: Analyzing trace with hash -790464616, now seen corresponding path program 9 times [2022-01-18 12:14:30,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:30,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134626224] [2022-01-18 12:14:30,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:30,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:30,200 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:30,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:30,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134626224] [2022-01-18 12:14:30,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134626224] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:30,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141403127] [2022-01-18 12:14:30,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:14:30,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:30,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:30,201 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) [2022-01-18 12:14:30,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 12:14:30,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:14:30,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:30,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:14:30,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:30,398 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:30,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:30,621 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:30,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141403127] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:30,621 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:30,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-18 12:14:30,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287773701] [2022-01-18 12:14:30,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:30,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 12:14:30,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:30,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 12:14:30,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-01-18 12:14:30,623 INFO L87 Difference]: Start difference. First operand 4376 states and 12355 transitions. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 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) [2022-01-18 12:14:31,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:31,822 INFO L93 Difference]: Finished difference Result 7236 states and 20083 transitions. [2022-01-18 12:14:31,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 12:14:31,822 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 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 75 [2022-01-18 12:14:31,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:31,832 INFO L225 Difference]: With dead ends: 7236 [2022-01-18 12:14:31,832 INFO L226 Difference]: Without dead ends: 7188 [2022-01-18 12:14:31,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1074 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=676, Invalid=2984, Unknown=0, NotChecked=0, Total=3660 [2022-01-18 12:14:31,833 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 542 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:31,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 1178 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:14:31,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7188 states. [2022-01-18 12:14:31,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7188 to 5152. [2022-01-18 12:14:31,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5152 states, 5151 states have (on average 2.839254513686663) internal successors, (14625), 5151 states have internal predecessors, (14625), 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) [2022-01-18 12:14:31,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5152 states to 5152 states and 14625 transitions. [2022-01-18 12:14:31,925 INFO L78 Accepts]: Start accepts. Automaton has 5152 states and 14625 transitions. Word has length 75 [2022-01-18 12:14:31,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:31,926 INFO L470 AbstractCegarLoop]: Abstraction has 5152 states and 14625 transitions. [2022-01-18 12:14:31,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 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) [2022-01-18 12:14:31,926 INFO L276 IsEmpty]: Start isEmpty. Operand 5152 states and 14625 transitions. [2022-01-18 12:14:31,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:14:31,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:31,934 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:31,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:32,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:32,147 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:32,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:32,148 INFO L85 PathProgramCache]: Analyzing trace with hash -769747230, now seen corresponding path program 10 times [2022-01-18 12:14:32,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:32,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778112105] [2022-01-18 12:14:32,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:32,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:32,243 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:32,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:32,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778112105] [2022-01-18 12:14:32,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778112105] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:32,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877943721] [2022-01-18 12:14:32,243 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:14:32,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:32,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:32,245 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) [2022-01-18 12:14:32,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 12:14:32,294 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:14:32,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:32,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:14:32,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:32,423 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:32,424 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:32,581 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:32,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877943721] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:32,581 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:32,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:14:32,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139590644] [2022-01-18 12:14:32,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:32,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:14:32,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:32,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:14:32,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:14:32,582 INFO L87 Difference]: Start difference. First operand 5152 states and 14625 transitions. Second operand has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 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) [2022-01-18 12:14:34,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:34,387 INFO L93 Difference]: Finished difference Result 8235 states and 22815 transitions. [2022-01-18 12:14:34,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 12:14:34,387 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 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 75 [2022-01-18 12:14:34,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:34,400 INFO L225 Difference]: With dead ends: 8235 [2022-01-18 12:14:34,401 INFO L226 Difference]: Without dead ends: 8175 [2022-01-18 12:14:34,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2070 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1162, Invalid=5158, Unknown=0, NotChecked=0, Total=6320 [2022-01-18 12:14:34,402 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 755 mSDsluCounter, 1365 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:34,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [755 Valid, 1395 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:14:34,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8175 states. [2022-01-18 12:14:34,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8175 to 5464. [2022-01-18 12:14:34,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5464 states, 5463 states have (on average 2.8407468423942888) internal successors, (15519), 5463 states have internal predecessors, (15519), 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) [2022-01-18 12:14:34,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5464 states to 5464 states and 15519 transitions. [2022-01-18 12:14:34,543 INFO L78 Accepts]: Start accepts. Automaton has 5464 states and 15519 transitions. Word has length 75 [2022-01-18 12:14:34,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:34,543 INFO L470 AbstractCegarLoop]: Abstraction has 5464 states and 15519 transitions. [2022-01-18 12:14:34,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 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) [2022-01-18 12:14:34,544 INFO L276 IsEmpty]: Start isEmpty. Operand 5464 states and 15519 transitions. [2022-01-18 12:14:34,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:14:34,553 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:34,553 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:34,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:34,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-01-18 12:14:34,772 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:34,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:34,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1088159336, now seen corresponding path program 11 times [2022-01-18 12:14:34,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:34,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073020063] [2022-01-18 12:14:34,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:34,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:34,866 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:34,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:34,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073020063] [2022-01-18 12:14:34,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073020063] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:34,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812133551] [2022-01-18 12:14:34,867 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:14:34,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:34,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:34,868 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) [2022-01-18 12:14:34,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 12:14:34,914 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:14:34,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:34,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:14:34,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:35,048 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:35,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:35,221 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:35,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812133551] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:35,221 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:35,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-01-18 12:14:35,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923482958] [2022-01-18 12:14:35,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:35,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 12:14:35,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:35,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 12:14:35,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-01-18 12:14:35,223 INFO L87 Difference]: Start difference. First operand 5464 states and 15519 transitions. Second operand has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 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) [2022-01-18 12:14:36,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:36,017 INFO L93 Difference]: Finished difference Result 6404 states and 18019 transitions. [2022-01-18 12:14:36,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 12:14:36,017 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 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 75 [2022-01-18 12:14:36,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:36,026 INFO L225 Difference]: With dead ends: 6404 [2022-01-18 12:14:36,026 INFO L226 Difference]: Without dead ends: 6332 [2022-01-18 12:14:36,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=370, Invalid=1886, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 12:14:36,027 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 273 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:36,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 1549 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:14:36,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6332 states. [2022-01-18 12:14:36,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6332 to 5584. [2022-01-18 12:14:36,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5584 states, 5583 states have (on average 2.8366469639978504) internal successors, (15837), 5583 states have internal predecessors, (15837), 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) [2022-01-18 12:14:36,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5584 states to 5584 states and 15837 transitions. [2022-01-18 12:14:36,111 INFO L78 Accepts]: Start accepts. Automaton has 5584 states and 15837 transitions. Word has length 75 [2022-01-18 12:14:36,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:36,112 INFO L470 AbstractCegarLoop]: Abstraction has 5584 states and 15837 transitions. [2022-01-18 12:14:36,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 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) [2022-01-18 12:14:36,112 INFO L276 IsEmpty]: Start isEmpty. Operand 5584 states and 15837 transitions. [2022-01-18 12:14:36,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:14:36,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:36,121 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:36,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:36,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-01-18 12:14:36,335 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:36,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:36,336 INFO L85 PathProgramCache]: Analyzing trace with hash 723432570, now seen corresponding path program 12 times [2022-01-18 12:14:36,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:36,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780071278] [2022-01-18 12:14:36,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:36,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:36,420 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:36,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:36,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780071278] [2022-01-18 12:14:36,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780071278] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:36,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634395328] [2022-01-18 12:14:36,421 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:14:36,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:36,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:36,422 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) [2022-01-18 12:14:36,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 12:14:36,472 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 12:14:36,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:36,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:14:36,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:36,606 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:36,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:36,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634395328] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:36,766 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:36,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-18 12:14:36,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982409672] [2022-01-18 12:14:36,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:36,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 12:14:36,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:36,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 12:14:36,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-01-18 12:14:36,767 INFO L87 Difference]: Start difference. First operand 5584 states and 15837 transitions. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 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) [2022-01-18 12:14:37,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:37,884 INFO L93 Difference]: Finished difference Result 7773 states and 21686 transitions. [2022-01-18 12:14:37,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 12:14:37,885 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 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 75 [2022-01-18 12:14:37,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:37,895 INFO L225 Difference]: With dead ends: 7773 [2022-01-18 12:14:37,895 INFO L226 Difference]: Without dead ends: 7725 [2022-01-18 12:14:37,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1198 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=680, Invalid=3102, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 12:14:37,896 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 461 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 461 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:37,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [461 Valid, 1128 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:14:37,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7725 states. [2022-01-18 12:14:37,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7725 to 6084. [2022-01-18 12:14:37,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6084 states, 6083 states have (on average 2.842018740752918) internal successors, (17288), 6083 states have internal predecessors, (17288), 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) [2022-01-18 12:14:37,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 17288 transitions. [2022-01-18 12:14:37,988 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 17288 transitions. Word has length 75 [2022-01-18 12:14:37,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:37,989 INFO L470 AbstractCegarLoop]: Abstraction has 6084 states and 17288 transitions. [2022-01-18 12:14:37,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 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) [2022-01-18 12:14:37,989 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 17288 transitions. [2022-01-18 12:14:37,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:14:37,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:37,999 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:38,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:38,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-01-18 12:14:38,215 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:38,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:38,216 INFO L85 PathProgramCache]: Analyzing trace with hash 744149956, now seen corresponding path program 13 times [2022-01-18 12:14:38,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:38,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967077186] [2022-01-18 12:14:38,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:38,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:38,300 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:38,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:38,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967077186] [2022-01-18 12:14:38,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967077186] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:38,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318223745] [2022-01-18 12:14:38,300 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:14:38,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:38,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:38,301 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) [2022-01-18 12:14:38,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 12:14:38,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:38,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:14:38,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:38,504 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:38,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:38,681 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:38,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318223745] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:38,681 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:38,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:14:38,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063217677] [2022-01-18 12:14:38,682 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:38,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:14:38,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:38,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:14:38,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:14:38,682 INFO L87 Difference]: Start difference. First operand 6084 states and 17288 transitions. Second operand has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 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) [2022-01-18 12:14:41,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:41,308 INFO L93 Difference]: Finished difference Result 9659 states and 26854 transitions. [2022-01-18 12:14:41,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-01-18 12:14:41,308 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 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 75 [2022-01-18 12:14:41,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:41,323 INFO L225 Difference]: With dead ends: 9659 [2022-01-18 12:14:41,323 INFO L226 Difference]: Without dead ends: 9599 [2022-01-18 12:14:41,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3599 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1688, Invalid=8212, Unknown=0, NotChecked=0, Total=9900 [2022-01-18 12:14:41,325 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 555 mSDsluCounter, 1965 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 1989 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:41,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [555 Valid, 1989 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:14:41,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9599 states. [2022-01-18 12:14:41,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9599 to 6296. [2022-01-18 12:14:41,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6296 states, 6295 states have (on average 2.845909451945989) internal successors, (17915), 6295 states have internal predecessors, (17915), 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) [2022-01-18 12:14:41,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6296 states to 6296 states and 17915 transitions. [2022-01-18 12:14:41,467 INFO L78 Accepts]: Start accepts. Automaton has 6296 states and 17915 transitions. Word has length 75 [2022-01-18 12:14:41,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:41,467 INFO L470 AbstractCegarLoop]: Abstraction has 6296 states and 17915 transitions. [2022-01-18 12:14:41,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 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) [2022-01-18 12:14:41,468 INFO L276 IsEmpty]: Start isEmpty. Operand 6296 states and 17915 transitions. [2022-01-18 12:14:41,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:14:41,476 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:41,476 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:41,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:41,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-01-18 12:14:41,677 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:41,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:41,677 INFO L85 PathProgramCache]: Analyzing trace with hash 345920998, now seen corresponding path program 14 times [2022-01-18 12:14:41,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:41,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14340827] [2022-01-18 12:14:41,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:41,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:41,750 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:41,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:41,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14340827] [2022-01-18 12:14:41,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14340827] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:41,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010193708] [2022-01-18 12:14:41,750 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:14:41,750 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:41,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:41,751 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) [2022-01-18 12:14:41,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 12:14:41,802 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:14:41,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:41,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:14:41,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:41,954 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:41,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:42,111 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:42,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010193708] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:42,111 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:42,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-18 12:14:42,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115268943] [2022-01-18 12:14:42,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:42,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 12:14:42,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:42,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 12:14:42,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-01-18 12:14:42,112 INFO L87 Difference]: Start difference. First operand 6296 states and 17915 transitions. Second operand has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 states have internal predecessors, (102), 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) [2022-01-18 12:14:43,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:43,786 INFO L93 Difference]: Finished difference Result 9212 states and 25881 transitions. [2022-01-18 12:14:43,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 12:14:43,786 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 states have internal predecessors, (102), 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 75 [2022-01-18 12:14:43,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:43,799 INFO L225 Difference]: With dead ends: 9212 [2022-01-18 12:14:43,799 INFO L226 Difference]: Without dead ends: 9107 [2022-01-18 12:14:43,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2050 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1097, Invalid=5065, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 12:14:43,800 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 507 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:43,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [507 Valid, 1529 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:14:43,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9107 states. [2022-01-18 12:14:43,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9107 to 6668. [2022-01-18 12:14:43,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6668 states, 6667 states have (on average 2.8447577621118945) internal successors, (18966), 6667 states have internal predecessors, (18966), 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) [2022-01-18 12:14:43,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6668 states to 6668 states and 18966 transitions. [2022-01-18 12:14:43,902 INFO L78 Accepts]: Start accepts. Automaton has 6668 states and 18966 transitions. Word has length 75 [2022-01-18 12:14:43,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:43,902 INFO L470 AbstractCegarLoop]: Abstraction has 6668 states and 18966 transitions. [2022-01-18 12:14:43,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.666666666666667) internal successors, (102), 18 states have internal predecessors, (102), 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) [2022-01-18 12:14:43,902 INFO L276 IsEmpty]: Start isEmpty. Operand 6668 states and 18966 transitions. [2022-01-18 12:14:43,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:14:43,911 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:43,911 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:43,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:44,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:44,127 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:44,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:44,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1061334052, now seen corresponding path program 15 times [2022-01-18 12:14:44,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:44,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26284347] [2022-01-18 12:14:44,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:44,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:44,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:44,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:44,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26284347] [2022-01-18 12:14:44,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26284347] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:44,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572862524] [2022-01-18 12:14:44,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:14:44,222 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:44,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:44,223 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:44,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 12:14:44,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:14:44,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:44,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:14:44,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:44,455 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:44,455 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:44,615 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:44,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572862524] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:44,616 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:44,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-18 12:14:44,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928514113] [2022-01-18 12:14:44,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:44,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 12:14:44,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:44,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 12:14:44,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-01-18 12:14:44,617 INFO L87 Difference]: Start difference. First operand 6668 states and 18966 transitions. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 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) [2022-01-18 12:14:45,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:45,864 INFO L93 Difference]: Finished difference Result 10227 states and 28654 transitions. [2022-01-18 12:14:45,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-01-18 12:14:45,864 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 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 75 [2022-01-18 12:14:45,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:45,879 INFO L225 Difference]: With dead ends: 10227 [2022-01-18 12:14:45,879 INFO L226 Difference]: Without dead ends: 10179 [2022-01-18 12:14:45,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1423 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=790, Invalid=3632, Unknown=0, NotChecked=0, Total=4422 [2022-01-18 12:14:45,880 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 503 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:45,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [503 Valid, 1442 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:14:45,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10179 states. [2022-01-18 12:14:45,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10179 to 7688. [2022-01-18 12:14:45,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7688 states, 7687 states have (on average 2.8477949785351893) internal successors, (21891), 7687 states have internal predecessors, (21891), 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) [2022-01-18 12:14:46,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7688 states to 7688 states and 21891 transitions. [2022-01-18 12:14:46,012 INFO L78 Accepts]: Start accepts. Automaton has 7688 states and 21891 transitions. Word has length 75 [2022-01-18 12:14:46,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:46,012 INFO L470 AbstractCegarLoop]: Abstraction has 7688 states and 21891 transitions. [2022-01-18 12:14:46,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 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) [2022-01-18 12:14:46,012 INFO L276 IsEmpty]: Start isEmpty. Operand 7688 states and 21891 transitions. [2022-01-18 12:14:46,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:14:46,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:46,022 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:46,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:46,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-01-18 12:14:46,238 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:46,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:46,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1040616666, now seen corresponding path program 16 times [2022-01-18 12:14:46,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:46,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863779225] [2022-01-18 12:14:46,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:46,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:46,328 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:46,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:46,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863779225] [2022-01-18 12:14:46,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863779225] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:46,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144675741] [2022-01-18 12:14:46,328 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:14:46,329 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:46,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:46,329 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:46,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 12:14:46,381 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:14:46,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:46,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:14:46,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:46,521 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:46,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:46,697 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:46,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144675741] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:46,697 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:46,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:14:46,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101415418] [2022-01-18 12:14:46,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:46,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:14:46,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:46,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:14:46,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:14:46,698 INFO L87 Difference]: Start difference. First operand 7688 states and 21891 transitions. Second operand has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 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) [2022-01-18 12:14:48,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:48,696 INFO L93 Difference]: Finished difference Result 11197 states and 31292 transitions. [2022-01-18 12:14:48,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-18 12:14:48,697 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 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 75 [2022-01-18 12:14:48,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:48,714 INFO L225 Difference]: With dead ends: 11197 [2022-01-18 12:14:48,714 INFO L226 Difference]: Without dead ends: 11137 [2022-01-18 12:14:48,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2794 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1413, Invalid=6597, Unknown=0, NotChecked=0, Total=8010 [2022-01-18 12:14:48,715 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 727 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:48,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [727 Valid, 1483 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:14:48,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11137 states. [2022-01-18 12:14:48,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11137 to 7824. [2022-01-18 12:14:48,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7824 states, 7823 states have (on average 2.8491627252972007) internal successors, (22289), 7823 states have internal predecessors, (22289), 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) [2022-01-18 12:14:48,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7824 states to 7824 states and 22289 transitions. [2022-01-18 12:14:48,836 INFO L78 Accepts]: Start accepts. Automaton has 7824 states and 22289 transitions. Word has length 75 [2022-01-18 12:14:48,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:48,836 INFO L470 AbstractCegarLoop]: Abstraction has 7824 states and 22289 transitions. [2022-01-18 12:14:48,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 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) [2022-01-18 12:14:48,836 INFO L276 IsEmpty]: Start isEmpty. Operand 7824 states and 22289 transitions. [2022-01-18 12:14:48,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:14:48,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:48,846 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:48,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:49,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-01-18 12:14:49,047 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:49,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:49,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1359028772, now seen corresponding path program 17 times [2022-01-18 12:14:49,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:49,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272032615] [2022-01-18 12:14:49,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:49,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:49,125 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:49,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:49,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272032615] [2022-01-18 12:14:49,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272032615] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:49,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192500349] [2022-01-18 12:14:49,125 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:14:49,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:49,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:49,126 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:49,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 12:14:49,178 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:14:49,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:49,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:14:49,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:49,336 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:49,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:49,499 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:49,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192500349] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:49,500 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:49,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-01-18 12:14:49,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005452791] [2022-01-18 12:14:49,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:49,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 12:14:49,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:49,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 12:14:49,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-01-18 12:14:49,500 INFO L87 Difference]: Start difference. First operand 7824 states and 22289 transitions. Second operand has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 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) [2022-01-18 12:14:50,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:50,248 INFO L93 Difference]: Finished difference Result 8740 states and 24715 transitions. [2022-01-18 12:14:50,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 12:14:50,249 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 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 75 [2022-01-18 12:14:50,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:50,262 INFO L225 Difference]: With dead ends: 8740 [2022-01-18 12:14:50,262 INFO L226 Difference]: Without dead ends: 8668 [2022-01-18 12:14:50,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=413, Invalid=2037, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 12:14:50,263 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 297 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:50,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 1369 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:14:50,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8668 states. [2022-01-18 12:14:50,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8668 to 7940. [2022-01-18 12:14:50,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7940 states, 7939 states have (on average 2.846706134273838) internal successors, (22600), 7939 states have internal predecessors, (22600), 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) [2022-01-18 12:14:50,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7940 states to 7940 states and 22600 transitions. [2022-01-18 12:14:50,376 INFO L78 Accepts]: Start accepts. Automaton has 7940 states and 22600 transitions. Word has length 75 [2022-01-18 12:14:50,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:50,376 INFO L470 AbstractCegarLoop]: Abstraction has 7940 states and 22600 transitions. [2022-01-18 12:14:50,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 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) [2022-01-18 12:14:50,377 INFO L276 IsEmpty]: Start isEmpty. Operand 7940 states and 22600 transitions. [2022-01-18 12:14:50,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:14:50,387 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:50,387 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:50,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:50,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-18 12:14:50,588 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:50,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:50,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1556288346, now seen corresponding path program 18 times [2022-01-18 12:14:50,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:50,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995335965] [2022-01-18 12:14:50,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:50,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:50,705 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:50,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:50,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995335965] [2022-01-18 12:14:50,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995335965] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:50,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345435889] [2022-01-18 12:14:50,705 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:14:50,705 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:50,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:50,706 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:50,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 12:14:50,761 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 12:14:50,761 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:50,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:14:50,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:50,939 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:50,939 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:51,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:51,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345435889] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:51,104 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:51,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:14:51,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766965198] [2022-01-18 12:14:51,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:51,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:14:51,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:51,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:14:51,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:14:51,105 INFO L87 Difference]: Start difference. First operand 7940 states and 22600 transitions. Second operand has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 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) [2022-01-18 12:14:52,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:52,270 INFO L93 Difference]: Finished difference Result 12785 states and 36011 transitions. [2022-01-18 12:14:52,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-18 12:14:52,270 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 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 75 [2022-01-18 12:14:52,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:52,295 INFO L225 Difference]: With dead ends: 12785 [2022-01-18 12:14:52,295 INFO L226 Difference]: Without dead ends: 12737 [2022-01-18 12:14:52,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1222 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=756, Invalid=3026, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 12:14:52,296 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 606 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 1422 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:52,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 1422 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:14:52,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12737 states. [2022-01-18 12:14:52,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12737 to 9228. [2022-01-18 12:14:52,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9228 states, 9227 states have (on average 2.849680286116831) internal successors, (26294), 9227 states have internal predecessors, (26294), 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) [2022-01-18 12:14:52,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9228 states to 9228 states and 26294 transitions. [2022-01-18 12:14:52,469 INFO L78 Accepts]: Start accepts. Automaton has 9228 states and 26294 transitions. Word has length 75 [2022-01-18 12:14:52,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:52,469 INFO L470 AbstractCegarLoop]: Abstraction has 9228 states and 26294 transitions. [2022-01-18 12:14:52,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.473684210526316) internal successors, (104), 19 states have internal predecessors, (104), 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) [2022-01-18 12:14:52,469 INFO L276 IsEmpty]: Start isEmpty. Operand 9228 states and 26294 transitions. [2022-01-18 12:14:52,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:14:52,481 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:52,481 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:52,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:52,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-18 12:14:52,697 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:52,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:52,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1535570960, now seen corresponding path program 19 times [2022-01-18 12:14:52,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:52,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474471654] [2022-01-18 12:14:52,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:52,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:52,797 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:52,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:52,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474471654] [2022-01-18 12:14:52,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474471654] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:52,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931882679] [2022-01-18 12:14:52,797 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:14:52,797 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:52,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:52,798 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:52,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 12:14:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:52,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:14:52,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:52,976 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:52,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:53,131 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:53,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931882679] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:53,131 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:53,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-01-18 12:14:53,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564899215] [2022-01-18 12:14:53,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:53,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 12:14:53,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:53,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 12:14:53,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-01-18 12:14:53,132 INFO L87 Difference]: Start difference. First operand 9228 states and 26294 transitions. Second operand has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 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) [2022-01-18 12:14:54,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:54,923 INFO L93 Difference]: Finished difference Result 13632 states and 38321 transitions. [2022-01-18 12:14:54,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-18 12:14:54,924 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 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 75 [2022-01-18 12:14:54,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:54,946 INFO L225 Difference]: With dead ends: 13632 [2022-01-18 12:14:54,946 INFO L226 Difference]: Without dead ends: 13572 [2022-01-18 12:14:54,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2319 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1291, Invalid=5351, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 12:14:54,947 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 720 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:54,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [720 Valid, 1610 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:14:54,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13572 states. [2022-01-18 12:14:55,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13572 to 9472. [2022-01-18 12:14:55,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9472 states, 9471 states have (on average 2.851335656213705) internal successors, (27005), 9471 states have internal predecessors, (27005), 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) [2022-01-18 12:14:55,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9472 states to 9472 states and 27005 transitions. [2022-01-18 12:14:55,127 INFO L78 Accepts]: Start accepts. Automaton has 9472 states and 27005 transitions. Word has length 75 [2022-01-18 12:14:55,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:55,127 INFO L470 AbstractCegarLoop]: Abstraction has 9472 states and 27005 transitions. [2022-01-18 12:14:55,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 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) [2022-01-18 12:14:55,127 INFO L276 IsEmpty]: Start isEmpty. Operand 9472 states and 27005 transitions. [2022-01-18 12:14:55,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:14:55,139 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:55,139 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:55,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:55,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:55,348 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:55,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:55,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1853983066, now seen corresponding path program 20 times [2022-01-18 12:14:55,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:55,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405697461] [2022-01-18 12:14:55,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:55,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:55,436 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:55,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:55,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405697461] [2022-01-18 12:14:55,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405697461] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:55,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681654482] [2022-01-18 12:14:55,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:14:55,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:55,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:55,438 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:55,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 12:14:55,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:14:55,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:55,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:14:55,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:55,664 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:55,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:55,840 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:55,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681654482] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:55,840 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:55,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-18 12:14:55,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363093576] [2022-01-18 12:14:55,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:55,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 12:14:55,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:55,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 12:14:55,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-01-18 12:14:55,841 INFO L87 Difference]: Start difference. First operand 9472 states and 27005 transitions. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 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) [2022-01-18 12:14:56,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:56,615 INFO L93 Difference]: Finished difference Result 10784 states and 30439 transitions. [2022-01-18 12:14:56,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 12:14:56,616 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 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 75 [2022-01-18 12:14:56,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:56,632 INFO L225 Difference]: With dead ends: 10784 [2022-01-18 12:14:56,633 INFO L226 Difference]: Without dead ends: 10712 [2022-01-18 12:14:56,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=405, Invalid=1757, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 12:14:56,633 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 374 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:56,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 1296 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:14:56,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10712 states. [2022-01-18 12:14:56,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10712 to 9616. [2022-01-18 12:14:56,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9616 states, 9615 states have (on average 2.8510660426417056) internal successors, (27413), 9615 states have internal predecessors, (27413), 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) [2022-01-18 12:14:56,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9616 states to 9616 states and 27413 transitions. [2022-01-18 12:14:56,812 INFO L78 Accepts]: Start accepts. Automaton has 9616 states and 27413 transitions. Word has length 75 [2022-01-18 12:14:56,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:56,812 INFO L470 AbstractCegarLoop]: Abstraction has 9616 states and 27413 transitions. [2022-01-18 12:14:56,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 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) [2022-01-18 12:14:56,813 INFO L276 IsEmpty]: Start isEmpty. Operand 9616 states and 27413 transitions. [2022-01-18 12:14:56,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:14:56,825 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:56,826 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:56,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-18 12:14:57,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-01-18 12:14:57,041 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:57,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:57,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1620543276, now seen corresponding path program 21 times [2022-01-18 12:14:57,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:57,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024585408] [2022-01-18 12:14:57,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:57,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:57,135 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:57,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:57,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024585408] [2022-01-18 12:14:57,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024585408] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:57,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1366720717] [2022-01-18 12:14:57,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:14:57,136 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:57,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:57,137 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:57,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-18 12:14:57,191 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:14:57,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:57,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:14:57,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:57,371 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:57,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:57,523 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:57,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1366720717] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:57,524 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:57,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-01-18 12:14:57,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474206597] [2022-01-18 12:14:57,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:57,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 12:14:57,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:57,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 12:14:57,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-01-18 12:14:57,525 INFO L87 Difference]: Start difference. First operand 9616 states and 27413 transitions. Second operand has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 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) [2022-01-18 12:14:57,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:57,931 INFO L93 Difference]: Finished difference Result 10060 states and 28541 transitions. [2022-01-18 12:14:57,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 12:14:57,932 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 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 75 [2022-01-18 12:14:57,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:57,946 INFO L225 Difference]: With dead ends: 10060 [2022-01-18 12:14:57,946 INFO L226 Difference]: Without dead ends: 10012 [2022-01-18 12:14:57,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=800, Unknown=0, NotChecked=0, Total=992 [2022-01-18 12:14:57,947 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 247 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:57,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 956 Invalid, 416 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:14:57,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10012 states. [2022-01-18 12:14:58,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10012 to 9640. [2022-01-18 12:14:58,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9640 states, 9639 states have (on average 2.8495694574125947) internal successors, (27467), 9639 states have internal predecessors, (27467), 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) [2022-01-18 12:14:58,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9640 states to 9640 states and 27467 transitions. [2022-01-18 12:14:58,078 INFO L78 Accepts]: Start accepts. Automaton has 9640 states and 27467 transitions. Word has length 75 [2022-01-18 12:14:58,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:58,079 INFO L470 AbstractCegarLoop]: Abstraction has 9640 states and 27467 transitions. [2022-01-18 12:14:58,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 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) [2022-01-18 12:14:58,079 INFO L276 IsEmpty]: Start isEmpty. Operand 9640 states and 27467 transitions. [2022-01-18 12:14:58,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:14:58,090 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:58,090 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:58,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-01-18 12:14:58,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:58,291 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:14:58,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:14:58,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1305078476, now seen corresponding path program 22 times [2022-01-18 12:14:58,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:14:58,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291540992] [2022-01-18 12:14:58,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:14:58,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:14:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:14:58,358 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:58,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:14:58,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291540992] [2022-01-18 12:14:58,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291540992] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:14:58,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173386823] [2022-01-18 12:14:58,359 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:14:58,359 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:14:58,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:14:58,360 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:14:58,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-18 12:14:58,411 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:14:58,411 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:14:58,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:14:58,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:14:58,536 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:58,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:14:58,676 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:14:58,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173386823] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:14:58,676 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:14:58,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:14:58,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274428664] [2022-01-18 12:14:58,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:14:58,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:14:58,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:14:58,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:14:58,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:14:58,677 INFO L87 Difference]: Start difference. First operand 9640 states and 27467 transitions. Second operand has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 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) [2022-01-18 12:14:59,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:14:59,763 INFO L93 Difference]: Finished difference Result 13911 states and 39419 transitions. [2022-01-18 12:14:59,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-18 12:14:59,764 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 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 75 [2022-01-18 12:14:59,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:14:59,786 INFO L225 Difference]: With dead ends: 13911 [2022-01-18 12:14:59,786 INFO L226 Difference]: Without dead ends: 13887 [2022-01-18 12:14:59,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 146 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1685 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=891, Invalid=4365, Unknown=0, NotChecked=0, Total=5256 [2022-01-18 12:14:59,787 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 808 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:14:59,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [808 Valid, 1347 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:14:59,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13887 states. [2022-01-18 12:14:59,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13887 to 9952. [2022-01-18 12:14:59,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9952 states, 9951 states have (on average 2.8531805848658425) internal successors, (28392), 9951 states have internal predecessors, (28392), 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) [2022-01-18 12:14:59,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9952 states to 9952 states and 28392 transitions. [2022-01-18 12:14:59,971 INFO L78 Accepts]: Start accepts. Automaton has 9952 states and 28392 transitions. Word has length 75 [2022-01-18 12:14:59,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:14:59,971 INFO L470 AbstractCegarLoop]: Abstraction has 9952 states and 28392 transitions. [2022-01-18 12:14:59,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.578947368421052) internal successors, (106), 19 states have internal predecessors, (106), 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) [2022-01-18 12:14:59,971 INFO L276 IsEmpty]: Start isEmpty. Operand 9952 states and 28392 transitions. [2022-01-18 12:14:59,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:14:59,983 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:14:59,983 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:14:59,998 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-01-18 12:15:00,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:00,184 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:00,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:00,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1284361090, now seen corresponding path program 23 times [2022-01-18 12:15:00,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:00,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832306473] [2022-01-18 12:15:00,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:00,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:00,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:00,260 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:00,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:00,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832306473] [2022-01-18 12:15:00,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832306473] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:00,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787343238] [2022-01-18 12:15:00,260 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:15:00,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:00,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:00,261 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:00,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-18 12:15:00,306 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:15:00,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:00,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 12:15:00,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:00,505 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:00,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:00,739 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:00,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787343238] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:00,739 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:00,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2022-01-18 12:15:00,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583109672] [2022-01-18 12:15:00,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:00,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 12:15:00,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:00,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 12:15:00,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2022-01-18 12:15:00,741 INFO L87 Difference]: Start difference. First operand 9952 states and 28392 transitions. Second operand has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 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) [2022-01-18 12:15:03,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:03,019 INFO L93 Difference]: Finished difference Result 14859 states and 41765 transitions. [2022-01-18 12:15:03,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-18 12:15:03,019 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 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 75 [2022-01-18 12:15:03,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:03,044 INFO L225 Difference]: With dead ends: 14859 [2022-01-18 12:15:03,047 INFO L226 Difference]: Without dead ends: 14814 [2022-01-18 12:15:03,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2811 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1567, Invalid=7175, Unknown=0, NotChecked=0, Total=8742 [2022-01-18 12:15:03,048 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 1420 mSDsluCounter, 1922 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1420 SdHoareTripleChecker+Valid, 1976 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:03,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1420 Valid, 1976 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:15:03,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14814 states. [2022-01-18 12:15:03,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14814 to 9836. [2022-01-18 12:15:03,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9836 states, 9835 states have (on average 2.85246568378241) internal successors, (28054), 9835 states have internal predecessors, (28054), 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) [2022-01-18 12:15:03,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9836 states to 9836 states and 28054 transitions. [2022-01-18 12:15:03,275 INFO L78 Accepts]: Start accepts. Automaton has 9836 states and 28054 transitions. Word has length 75 [2022-01-18 12:15:03,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:03,275 INFO L470 AbstractCegarLoop]: Abstraction has 9836 states and 28054 transitions. [2022-01-18 12:15:03,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.739130434782608) internal successors, (109), 23 states have internal predecessors, (109), 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) [2022-01-18 12:15:03,275 INFO L276 IsEmpty]: Start isEmpty. Operand 9836 states and 28054 transitions. [2022-01-18 12:15:03,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:15:03,288 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:03,289 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:03,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-01-18 12:15:03,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:03,489 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:03,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:03,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1906375620, now seen corresponding path program 24 times [2022-01-18 12:15:03,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:03,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137529876] [2022-01-18 12:15:03,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:03,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:03,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:03,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:03,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137529876] [2022-01-18 12:15:03,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137529876] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:03,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [961568626] [2022-01-18 12:15:03,567 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:15:03,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:03,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:03,568 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:03,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-18 12:15:03,621 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 12:15:03,621 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:03,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:15:03,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:03,774 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:03,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:03,927 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:03,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [961568626] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:03,928 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:03,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:15:03,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076637476] [2022-01-18 12:15:03,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:03,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:15:03,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:03,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:15:03,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:15:03,929 INFO L87 Difference]: Start difference. First operand 9836 states and 28054 transitions. Second operand has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 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) [2022-01-18 12:15:05,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:05,366 INFO L93 Difference]: Finished difference Result 13587 states and 38339 transitions. [2022-01-18 12:15:05,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-18 12:15:05,366 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 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 75 [2022-01-18 12:15:05,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:05,390 INFO L225 Difference]: With dead ends: 13587 [2022-01-18 12:15:05,390 INFO L226 Difference]: Without dead ends: 13512 [2022-01-18 12:15:05,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 145 SyntacticMatches, 2 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2525 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1294, Invalid=6362, Unknown=0, NotChecked=0, Total=7656 [2022-01-18 12:15:05,391 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 625 mSDsluCounter, 2069 mSDsCounter, 0 mSdLazyCounter, 844 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 2063 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:05,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 2063 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 844 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:15:05,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13512 states. [2022-01-18 12:15:05,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13512 to 10124. [2022-01-18 12:15:05,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10124 states, 10123 states have (on average 2.854292205867826) internal successors, (28894), 10123 states have internal predecessors, (28894), 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) [2022-01-18 12:15:05,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10124 states to 10124 states and 28894 transitions. [2022-01-18 12:15:05,561 INFO L78 Accepts]: Start accepts. Automaton has 10124 states and 28894 transitions. Word has length 75 [2022-01-18 12:15:05,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:05,561 INFO L470 AbstractCegarLoop]: Abstraction has 10124 states and 28894 transitions. [2022-01-18 12:15:05,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 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) [2022-01-18 12:15:05,561 INFO L276 IsEmpty]: Start isEmpty. Operand 10124 states and 28894 transitions. [2022-01-18 12:15:05,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:15:05,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:05,600 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:05,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-01-18 12:15:05,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:05,800 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:05,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:05,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1356812648, now seen corresponding path program 25 times [2022-01-18 12:15:05,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:05,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840713219] [2022-01-18 12:15:05,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:05,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:05,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:05,875 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:05,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:05,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840713219] [2022-01-18 12:15:05,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840713219] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:05,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697402536] [2022-01-18 12:15:05,876 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:15:05,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:05,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:05,877 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:05,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-18 12:15:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:05,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:15:05,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:06,054 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:06,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:06,198 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:06,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697402536] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:06,199 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:06,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-18 12:15:06,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742936926] [2022-01-18 12:15:06,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:06,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 12:15:06,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:06,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 12:15:06,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-01-18 12:15:06,200 INFO L87 Difference]: Start difference. First operand 10124 states and 28894 transitions. Second operand has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 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) [2022-01-18 12:15:07,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:07,321 INFO L93 Difference]: Finished difference Result 13500 states and 38140 transitions. [2022-01-18 12:15:07,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-01-18 12:15:07,322 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 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 75 [2022-01-18 12:15:07,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:07,347 INFO L225 Difference]: With dead ends: 13500 [2022-01-18 12:15:07,347 INFO L226 Difference]: Without dead ends: 13410 [2022-01-18 12:15:07,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 146 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1494 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=927, Invalid=4185, Unknown=0, NotChecked=0, Total=5112 [2022-01-18 12:15:07,348 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 523 mSDsluCounter, 1911 mSDsCounter, 0 mSdLazyCounter, 799 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:07,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 1915 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 799 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:15:07,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13410 states. [2022-01-18 12:15:07,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13410 to 10124. [2022-01-18 12:15:07,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10124 states, 10123 states have (on average 2.8531067865257334) internal successors, (28882), 10123 states have internal predecessors, (28882), 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) [2022-01-18 12:15:07,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10124 states to 10124 states and 28882 transitions. [2022-01-18 12:15:07,529 INFO L78 Accepts]: Start accepts. Automaton has 10124 states and 28882 transitions. Word has length 75 [2022-01-18 12:15:07,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:07,529 INFO L470 AbstractCegarLoop]: Abstraction has 10124 states and 28882 transitions. [2022-01-18 12:15:07,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 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) [2022-01-18 12:15:07,529 INFO L276 IsEmpty]: Start isEmpty. Operand 10124 states and 28882 transitions. [2022-01-18 12:15:07,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:15:07,542 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:07,542 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:07,558 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-01-18 12:15:07,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-01-18 12:15:07,743 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:07,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:07,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1594629350, now seen corresponding path program 26 times [2022-01-18 12:15:07,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:07,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915722803] [2022-01-18 12:15:07,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:07,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:07,839 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:07,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:07,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915722803] [2022-01-18 12:15:07,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915722803] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:07,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972741844] [2022-01-18 12:15:07,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:15:07,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:07,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:07,840 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:07,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-18 12:15:07,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:15:07,912 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:07,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:15:07,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:08,051 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:08,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:08,189 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:08,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972741844] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:08,190 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:08,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-01-18 12:15:08,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92195010] [2022-01-18 12:15:08,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:08,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 12:15:08,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:08,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 12:15:08,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-01-18 12:15:08,191 INFO L87 Difference]: Start difference. First operand 10124 states and 28882 transitions. Second operand has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 states have internal predecessors, (105), 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) [2022-01-18 12:15:09,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:09,052 INFO L93 Difference]: Finished difference Result 13442 states and 38145 transitions. [2022-01-18 12:15:09,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-01-18 12:15:09,056 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 states have internal predecessors, (105), 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 75 [2022-01-18 12:15:09,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:09,079 INFO L225 Difference]: With dead ends: 13442 [2022-01-18 12:15:09,079 INFO L226 Difference]: Without dead ends: 13382 [2022-01-18 12:15:09,080 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 149 SyntacticMatches, 3 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 855 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=678, Invalid=2628, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 12:15:09,080 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 522 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:09,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 1622 Invalid, 687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:15:09,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13382 states. [2022-01-18 12:15:09,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13382 to 10064. [2022-01-18 12:15:09,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10064 states, 10063 states have (on average 2.8505415879956275) internal successors, (28685), 10063 states have internal predecessors, (28685), 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) [2022-01-18 12:15:09,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10064 states to 10064 states and 28685 transitions. [2022-01-18 12:15:09,277 INFO L78 Accepts]: Start accepts. Automaton has 10064 states and 28685 transitions. Word has length 75 [2022-01-18 12:15:09,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:09,277 INFO L470 AbstractCegarLoop]: Abstraction has 10064 states and 28685 transitions. [2022-01-18 12:15:09,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5625) internal successors, (105), 16 states have internal predecessors, (105), 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) [2022-01-18 12:15:09,277 INFO L276 IsEmpty]: Start isEmpty. Operand 10064 states and 28685 transitions. [2022-01-18 12:15:09,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:15:09,290 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:09,290 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:09,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-01-18 12:15:09,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-01-18 12:15:09,491 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:09,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:09,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1909193570, now seen corresponding path program 27 times [2022-01-18 12:15:09,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:09,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917420848] [2022-01-18 12:15:09,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:09,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:09,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:09,567 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:09,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:09,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917420848] [2022-01-18 12:15:09,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917420848] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:09,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501689784] [2022-01-18 12:15:09,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:15:09,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:09,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:09,568 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:09,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-18 12:15:09,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:15:09,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:09,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:15:09,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:09,773 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:09,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:09,934 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:09,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501689784] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:09,934 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:09,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:15:09,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196827365] [2022-01-18 12:15:09,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:09,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:15:09,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:09,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:15:09,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:15:09,935 INFO L87 Difference]: Start difference. First operand 10064 states and 28685 transitions. Second operand has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 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) [2022-01-18 12:15:13,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:13,377 INFO L93 Difference]: Finished difference Result 13835 states and 38920 transitions. [2022-01-18 12:15:13,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 133 states. [2022-01-18 12:15:13,378 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 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 75 [2022-01-18 12:15:13,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:13,401 INFO L225 Difference]: With dead ends: 13835 [2022-01-18 12:15:13,401 INFO L226 Difference]: Without dead ends: 13685 [2022-01-18 12:15:13,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7133 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2600, Invalid=16306, Unknown=0, NotChecked=0, Total=18906 [2022-01-18 12:15:13,403 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 626 mSDsluCounter, 2045 mSDsCounter, 0 mSdLazyCounter, 1095 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 2027 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 1095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:13,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [626 Valid, 2027 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 1095 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:15:13,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13685 states. [2022-01-18 12:15:13,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13685 to 10524. [2022-01-18 12:15:13,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10524 states, 10523 states have (on average 2.8526085717000855) internal successors, (30018), 10523 states have internal predecessors, (30018), 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) [2022-01-18 12:15:13,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10524 states to 10524 states and 30018 transitions. [2022-01-18 12:15:13,596 INFO L78 Accepts]: Start accepts. Automaton has 10524 states and 30018 transitions. Word has length 75 [2022-01-18 12:15:13,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:13,596 INFO L470 AbstractCegarLoop]: Abstraction has 10524 states and 30018 transitions. [2022-01-18 12:15:13,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 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) [2022-01-18 12:15:13,596 INFO L276 IsEmpty]: Start isEmpty. Operand 10524 states and 30018 transitions. [2022-01-18 12:15:13,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:15:13,610 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:13,610 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:13,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-01-18 12:15:13,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-01-18 12:15:13,811 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:13,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:13,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1359630598, now seen corresponding path program 28 times [2022-01-18 12:15:13,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:13,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861338485] [2022-01-18 12:15:13,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:13,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:13,880 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:13,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:13,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861338485] [2022-01-18 12:15:13,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861338485] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:13,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897460179] [2022-01-18 12:15:13,881 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:15:13,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:13,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:13,882 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:13,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-18 12:15:13,939 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:15:13,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:13,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:15:13,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:14,070 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:14,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:14,220 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:14,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897460179] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:14,220 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:14,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-18 12:15:14,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115218241] [2022-01-18 12:15:14,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:14,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 12:15:14,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:14,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 12:15:14,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-01-18 12:15:14,221 INFO L87 Difference]: Start difference. First operand 10524 states and 30018 transitions. Second operand has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 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) [2022-01-18 12:15:15,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:15,924 INFO L93 Difference]: Finished difference Result 13590 states and 38411 transitions. [2022-01-18 12:15:15,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-18 12:15:15,924 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 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 75 [2022-01-18 12:15:15,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:15,949 INFO L225 Difference]: With dead ends: 13590 [2022-01-18 12:15:15,949 INFO L226 Difference]: Without dead ends: 13500 [2022-01-18 12:15:15,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2194 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1039, Invalid=5767, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 12:15:15,950 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 491 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 917 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:15,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 1854 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 917 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:15:15,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13500 states. [2022-01-18 12:15:16,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13500 to 10508. [2022-01-18 12:15:16,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10508 states, 10507 states have (on average 2.84971923479585) internal successors, (29942), 10507 states have internal predecessors, (29942), 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) [2022-01-18 12:15:16,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10508 states to 10508 states and 29942 transitions. [2022-01-18 12:15:16,121 INFO L78 Accepts]: Start accepts. Automaton has 10508 states and 29942 transitions. Word has length 75 [2022-01-18 12:15:16,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:16,121 INFO L470 AbstractCegarLoop]: Abstraction has 10508 states and 29942 transitions. [2022-01-18 12:15:16,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.055555555555555) internal successors, (109), 18 states have internal predecessors, (109), 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) [2022-01-18 12:15:16,121 INFO L276 IsEmpty]: Start isEmpty. Operand 10508 states and 29942 transitions. [2022-01-18 12:15:16,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:15:16,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:16,134 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:16,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-01-18 12:15:16,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-01-18 12:15:16,334 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:16,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:16,335 INFO L85 PathProgramCache]: Analyzing trace with hash -796141068, now seen corresponding path program 29 times [2022-01-18 12:15:16,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:16,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099918035] [2022-01-18 12:15:16,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:16,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:16,450 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:16,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:16,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099918035] [2022-01-18 12:15:16,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099918035] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:16,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898500491] [2022-01-18 12:15:16,450 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:15:16,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:16,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:16,451 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:16,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-18 12:15:16,498 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:15:16,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:16,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 12:15:16,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:16,669 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:16,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:16,893 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:16,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898500491] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:16,893 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:16,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 22 [2022-01-18 12:15:16,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451829330] [2022-01-18 12:15:16,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:16,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 12:15:16,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:16,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 12:15:16,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2022-01-18 12:15:16,894 INFO L87 Difference]: Start difference. First operand 10508 states and 29942 transitions. Second operand has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 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) [2022-01-18 12:15:19,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:19,784 INFO L93 Difference]: Finished difference Result 14449 states and 40857 transitions. [2022-01-18 12:15:19,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-01-18 12:15:19,785 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 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 75 [2022-01-18 12:15:19,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:19,809 INFO L225 Difference]: With dead ends: 14449 [2022-01-18 12:15:19,809 INFO L226 Difference]: Without dead ends: 14401 [2022-01-18 12:15:19,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4938 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2058, Invalid=11514, Unknown=0, NotChecked=0, Total=13572 [2022-01-18 12:15:19,811 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 885 mSDsluCounter, 2331 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 2321 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:19,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 2321 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:15:19,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14401 states. [2022-01-18 12:15:19,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14401 to 11468. [2022-01-18 12:15:19,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11468 states, 11467 states have (on average 2.8532310107264323) internal successors, (32718), 11467 states have internal predecessors, (32718), 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) [2022-01-18 12:15:19,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11468 states to 11468 states and 32718 transitions. [2022-01-18 12:15:19,991 INFO L78 Accepts]: Start accepts. Automaton has 11468 states and 32718 transitions. Word has length 75 [2022-01-18 12:15:19,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:19,991 INFO L470 AbstractCegarLoop]: Abstraction has 11468 states and 32718 transitions. [2022-01-18 12:15:19,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 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) [2022-01-18 12:15:19,992 INFO L276 IsEmpty]: Start isEmpty. Operand 11468 states and 32718 transitions. [2022-01-18 12:15:20,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:15:20,005 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:20,005 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:20,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-01-18 12:15:20,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-01-18 12:15:20,206 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:20,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:20,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1419924444, now seen corresponding path program 30 times [2022-01-18 12:15:20,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:20,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985291062] [2022-01-18 12:15:20,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:20,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:20,284 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:20,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:20,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985291062] [2022-01-18 12:15:20,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985291062] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:20,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994698714] [2022-01-18 12:15:20,285 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:15:20,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:20,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:20,286 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:20,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-18 12:15:20,385 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:15:20,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:20,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:15:20,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:20,499 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:20,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:20,658 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:20,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994698714] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:20,658 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:20,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:15:20,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947915224] [2022-01-18 12:15:20,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:20,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:15:20,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:20,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:15:20,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:15:20,659 INFO L87 Difference]: Start difference. First operand 11468 states and 32718 transitions. Second operand has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 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) [2022-01-18 12:15:23,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:23,892 INFO L93 Difference]: Finished difference Result 16177 states and 45532 transitions. [2022-01-18 12:15:23,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2022-01-18 12:15:23,893 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 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 75 [2022-01-18 12:15:23,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:23,924 INFO L225 Difference]: With dead ends: 16177 [2022-01-18 12:15:23,924 INFO L226 Difference]: Without dead ends: 16117 [2022-01-18 12:15:23,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7362 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=2857, Invalid=15503, Unknown=0, NotChecked=0, Total=18360 [2022-01-18 12:15:23,927 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 795 mSDsluCounter, 1957 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1975 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:23,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 1975 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:15:23,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16117 states. [2022-01-18 12:15:24,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16117 to 12112. [2022-01-18 12:15:24,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12112 states, 12111 states have (on average 2.860622574519032) internal successors, (34645), 12111 states have internal predecessors, (34645), 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) [2022-01-18 12:15:24,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12112 states to 12112 states and 34645 transitions. [2022-01-18 12:15:24,145 INFO L78 Accepts]: Start accepts. Automaton has 12112 states and 34645 transitions. Word has length 75 [2022-01-18 12:15:24,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:24,145 INFO L470 AbstractCegarLoop]: Abstraction has 12112 states and 34645 transitions. [2022-01-18 12:15:24,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 19 states have internal predecessors, (110), 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) [2022-01-18 12:15:24,146 INFO L276 IsEmpty]: Start isEmpty. Operand 12112 states and 34645 transitions. [2022-01-18 12:15:24,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:15:24,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:24,162 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:24,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-01-18 12:15:24,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-01-18 12:15:24,362 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:24,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:24,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1818153402, now seen corresponding path program 31 times [2022-01-18 12:15:24,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:24,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324721752] [2022-01-18 12:15:24,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:24,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:24,435 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:24,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:24,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324721752] [2022-01-18 12:15:24,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324721752] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:24,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518032888] [2022-01-18 12:15:24,435 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:15:24,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:24,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:24,436 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:24,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-01-18 12:15:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:24,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:15:24,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:24,630 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:24,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:24,792 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:24,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518032888] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:24,793 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:24,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-18 12:15:24,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096515629] [2022-01-18 12:15:24,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:24,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 12:15:24,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:24,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 12:15:24,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-01-18 12:15:24,794 INFO L87 Difference]: Start difference. First operand 12112 states and 34645 transitions. Second operand has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 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) [2022-01-18 12:15:26,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:26,621 INFO L93 Difference]: Finished difference Result 14497 states and 41139 transitions. [2022-01-18 12:15:26,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-01-18 12:15:26,621 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 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 75 [2022-01-18 12:15:26,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:26,644 INFO L225 Difference]: With dead ends: 14497 [2022-01-18 12:15:26,644 INFO L226 Difference]: Without dead ends: 14407 [2022-01-18 12:15:26,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3015 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1418, Invalid=7324, Unknown=0, NotChecked=0, Total=8742 [2022-01-18 12:15:26,645 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 475 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 1908 SdHoareTripleChecker+Invalid, 916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:26,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [475 Valid, 1908 Invalid, 916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:15:26,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14407 states. [2022-01-18 12:15:26,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14407 to 12140. [2022-01-18 12:15:26,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12140 states, 12139 states have (on average 2.857401762912925) internal successors, (34686), 12139 states have internal predecessors, (34686), 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) [2022-01-18 12:15:26,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12140 states to 12140 states and 34686 transitions. [2022-01-18 12:15:26,828 INFO L78 Accepts]: Start accepts. Automaton has 12140 states and 34686 transitions. Word has length 75 [2022-01-18 12:15:26,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:26,829 INFO L470 AbstractCegarLoop]: Abstraction has 12140 states and 34686 transitions. [2022-01-18 12:15:26,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.111111111111111) internal successors, (110), 18 states have internal predecessors, (110), 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) [2022-01-18 12:15:26,829 INFO L276 IsEmpty]: Start isEmpty. Operand 12140 states and 34686 transitions. [2022-01-18 12:15:26,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:15:26,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:26,844 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:26,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-01-18 12:15:27,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:27,044 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:27,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:27,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1714059606, now seen corresponding path program 32 times [2022-01-18 12:15:27,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:27,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991451997] [2022-01-18 12:15:27,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:27,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:27,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:27,142 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:27,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:27,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991451997] [2022-01-18 12:15:27,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991451997] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:27,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044307504] [2022-01-18 12:15:27,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:15:27,142 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:27,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:27,143 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:27,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-01-18 12:15:27,205 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:15:27,205 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:27,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:15:27,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:27,338 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:27,339 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:27,498 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:27,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044307504] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:27,499 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:27,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-18 12:15:27,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95380743] [2022-01-18 12:15:27,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:27,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 12:15:27,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:27,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 12:15:27,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2022-01-18 12:15:27,500 INFO L87 Difference]: Start difference. First operand 12140 states and 34686 transitions. Second operand has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 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) [2022-01-18 12:15:28,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:28,710 INFO L93 Difference]: Finished difference Result 14819 states and 41810 transitions. [2022-01-18 12:15:28,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 12:15:28,711 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 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 75 [2022-01-18 12:15:28,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:28,736 INFO L225 Difference]: With dead ends: 14819 [2022-01-18 12:15:28,736 INFO L226 Difference]: Without dead ends: 14771 [2022-01-18 12:15:28,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1384 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=792, Invalid=3498, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 12:15:28,737 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 621 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 621 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:28,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [621 Valid, 1288 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:15:28,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14771 states. [2022-01-18 12:15:28,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14771 to 12640. [2022-01-18 12:15:28,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12640 states, 12639 states have (on average 2.8597990347337605) internal successors, (36145), 12639 states have internal predecessors, (36145), 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) [2022-01-18 12:15:28,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12640 states to 12640 states and 36145 transitions. [2022-01-18 12:15:28,974 INFO L78 Accepts]: Start accepts. Automaton has 12640 states and 36145 transitions. Word has length 75 [2022-01-18 12:15:28,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:28,974 INFO L470 AbstractCegarLoop]: Abstraction has 12640 states and 36145 transitions. [2022-01-18 12:15:28,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.722222222222222) internal successors, (103), 18 states have internal predecessors, (103), 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) [2022-01-18 12:15:28,974 INFO L276 IsEmpty]: Start isEmpty. Operand 12640 states and 36145 transitions. [2022-01-18 12:15:28,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:15:28,992 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:28,992 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:29,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-01-18 12:15:29,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:29,193 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:29,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:29,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1734776992, now seen corresponding path program 33 times [2022-01-18 12:15:29,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:29,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775325220] [2022-01-18 12:15:29,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:29,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:29,270 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:29,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:29,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775325220] [2022-01-18 12:15:29,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775325220] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:29,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512225326] [2022-01-18 12:15:29,271 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:15:29,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:29,271 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:29,272 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:29,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-01-18 12:15:29,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 12:15:29,333 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:29,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:15:29,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:29,442 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:29,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:29,591 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:29,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512225326] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:29,591 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:29,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:15:29,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384857949] [2022-01-18 12:15:29,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:29,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:15:29,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:29,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:15:29,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:15:29,592 INFO L87 Difference]: Start difference. First operand 12640 states and 36145 transitions. Second operand has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 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) [2022-01-18 12:15:31,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:31,463 INFO L93 Difference]: Finished difference Result 15902 states and 44805 transitions. [2022-01-18 12:15:31,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-01-18 12:15:31,464 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 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 75 [2022-01-18 12:15:31,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:31,492 INFO L225 Difference]: With dead ends: 15902 [2022-01-18 12:15:31,492 INFO L226 Difference]: Without dead ends: 15842 [2022-01-18 12:15:31,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2971 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1467, Invalid=6905, Unknown=0, NotChecked=0, Total=8372 [2022-01-18 12:15:31,494 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 826 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:31,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 1766 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 762 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:15:31,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15842 states. [2022-01-18 12:15:31,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15842 to 12380. [2022-01-18 12:15:31,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12380 states, 12379 states have (on average 2.855319492689232) internal successors, (35346), 12379 states have internal predecessors, (35346), 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) [2022-01-18 12:15:31,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12380 states to 12380 states and 35346 transitions. [2022-01-18 12:15:31,716 INFO L78 Accepts]: Start accepts. Automaton has 12380 states and 35346 transitions. Word has length 75 [2022-01-18 12:15:31,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:31,717 INFO L470 AbstractCegarLoop]: Abstraction has 12380 states and 35346 transitions. [2022-01-18 12:15:31,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.368421052631579) internal successors, (102), 19 states have internal predecessors, (102), 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) [2022-01-18 12:15:31,717 INFO L276 IsEmpty]: Start isEmpty. Operand 12380 states and 35346 transitions. [2022-01-18 12:15:31,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:15:31,734 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:31,734 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:31,750 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-01-18 12:15:31,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-01-18 12:15:31,935 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:31,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:31,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1416364886, now seen corresponding path program 34 times [2022-01-18 12:15:31,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:31,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325915091] [2022-01-18 12:15:31,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:31,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:32,009 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:32,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:32,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325915091] [2022-01-18 12:15:32,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325915091] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:32,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823821389] [2022-01-18 12:15:32,010 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:15:32,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:32,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:32,011 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:32,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-01-18 12:15:32,076 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:15:32,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:32,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:15:32,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:32,235 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:32,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:32,376 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:32,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823821389] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:32,376 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:32,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-01-18 12:15:32,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180754899] [2022-01-18 12:15:32,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:32,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 12:15:32,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:32,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 12:15:32,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-01-18 12:15:32,377 INFO L87 Difference]: Start difference. First operand 12380 states and 35346 transitions. Second operand has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 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) [2022-01-18 12:15:32,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:32,931 INFO L93 Difference]: Finished difference Result 12832 states and 36524 transitions. [2022-01-18 12:15:32,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 12:15:32,932 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 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 75 [2022-01-18 12:15:32,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:32,954 INFO L225 Difference]: With dead ends: 12832 [2022-01-18 12:15:32,954 INFO L226 Difference]: Without dead ends: 12796 [2022-01-18 12:15:32,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 144 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=362, Invalid=1360, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 12:15:32,955 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 288 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:32,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 1230 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:15:32,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12796 states. [2022-01-18 12:15:33,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12796 to 12380. [2022-01-18 12:15:33,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12380 states, 12379 states have (on average 2.8549963648113743) internal successors, (35342), 12379 states have internal predecessors, (35342), 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) [2022-01-18 12:15:33,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12380 states to 12380 states and 35342 transitions. [2022-01-18 12:15:33,158 INFO L78 Accepts]: Start accepts. Automaton has 12380 states and 35342 transitions. Word has length 75 [2022-01-18 12:15:33,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:33,158 INFO L470 AbstractCegarLoop]: Abstraction has 12380 states and 35342 transitions. [2022-01-18 12:15:33,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 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) [2022-01-18 12:15:33,158 INFO L276 IsEmpty]: Start isEmpty. Operand 12380 states and 35342 transitions. [2022-01-18 12:15:33,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:15:33,177 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:33,177 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:33,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2022-01-18 12:15:33,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:33,377 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:33,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:33,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1192039042, now seen corresponding path program 35 times [2022-01-18 12:15:33,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:33,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247088388] [2022-01-18 12:15:33,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:33,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:33,457 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:33,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:33,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247088388] [2022-01-18 12:15:33,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247088388] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:33,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041877671] [2022-01-18 12:15:33,458 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:15:33,458 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:33,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:33,458 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:33,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-01-18 12:15:33,520 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:15:33,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:33,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:15:33,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:33,658 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:33,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:33,812 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:33,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041877671] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:33,812 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:33,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:15:33,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179408349] [2022-01-18 12:15:33,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:33,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:15:33,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:33,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:15:33,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:15:33,813 INFO L87 Difference]: Start difference. First operand 12380 states and 35342 transitions. Second operand has 19 states, 19 states have (on average 5.315789473684211) internal successors, (101), 19 states have internal predecessors, (101), 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) [2022-01-18 12:15:36,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:36,233 INFO L93 Difference]: Finished difference Result 21100 states and 59755 transitions. [2022-01-18 12:15:36,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-18 12:15:36,234 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.315789473684211) internal successors, (101), 19 states have internal predecessors, (101), 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 75 [2022-01-18 12:15:36,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:36,276 INFO L225 Difference]: With dead ends: 21100 [2022-01-18 12:15:36,276 INFO L226 Difference]: Without dead ends: 21052 [2022-01-18 12:15:36,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3625 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1406, Invalid=8100, Unknown=0, NotChecked=0, Total=9506 [2022-01-18 12:15:36,278 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 636 mSDsluCounter, 1721 mSDsCounter, 0 mSdLazyCounter, 961 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:36,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [636 Valid, 1750 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 961 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:15:36,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21052 states. [2022-01-18 12:15:36,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21052 to 13940. [2022-01-18 12:15:36,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13940 states, 13939 states have (on average 2.869072386828323) internal successors, (39992), 13939 states have internal predecessors, (39992), 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) [2022-01-18 12:15:36,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13940 states to 13940 states and 39992 transitions. [2022-01-18 12:15:36,630 INFO L78 Accepts]: Start accepts. Automaton has 13940 states and 39992 transitions. Word has length 75 [2022-01-18 12:15:36,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:36,630 INFO L470 AbstractCegarLoop]: Abstraction has 13940 states and 39992 transitions. [2022-01-18 12:15:36,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.315789473684211) internal successors, (101), 19 states have internal predecessors, (101), 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) [2022-01-18 12:15:36,630 INFO L276 IsEmpty]: Start isEmpty. Operand 13940 states and 39992 transitions. [2022-01-18 12:15:36,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:15:36,650 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:36,650 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:36,666 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-01-18 12:15:36,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-01-18 12:15:36,859 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:36,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:36,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1171321656, now seen corresponding path program 36 times [2022-01-18 12:15:36,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:36,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742846251] [2022-01-18 12:15:36,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:36,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:36,946 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:36,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:36,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742846251] [2022-01-18 12:15:36,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742846251] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:36,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139702379] [2022-01-18 12:15:36,946 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:15:36,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:36,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:36,947 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:36,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-01-18 12:15:37,018 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:15:37,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:37,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:15:37,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:37,132 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:37,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:37,278 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:37,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139702379] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:37,278 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:37,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-01-18 12:15:37,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418315780] [2022-01-18 12:15:37,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:37,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 12:15:37,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:37,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 12:15:37,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-01-18 12:15:37,279 INFO L87 Difference]: Start difference. First operand 13940 states and 39992 transitions. Second operand has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 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) [2022-01-18 12:15:40,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:40,621 INFO L93 Difference]: Finished difference Result 23366 states and 66194 transitions. [2022-01-18 12:15:40,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-01-18 12:15:40,622 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 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 75 [2022-01-18 12:15:40,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:40,663 INFO L225 Difference]: With dead ends: 23366 [2022-01-18 12:15:40,664 INFO L226 Difference]: Without dead ends: 23306 [2022-01-18 12:15:40,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4285 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2009, Invalid=8911, Unknown=0, NotChecked=0, Total=10920 [2022-01-18 12:15:40,665 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 827 mSDsluCounter, 1920 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 827 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:40,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [827 Valid, 1936 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 12:15:40,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23306 states. [2022-01-18 12:15:40,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23306 to 14704. [2022-01-18 12:15:40,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14704 states, 14703 states have (on average 2.873767258382643) internal successors, (42253), 14703 states have internal predecessors, (42253), 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) [2022-01-18 12:15:41,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14704 states to 14704 states and 42253 transitions. [2022-01-18 12:15:41,026 INFO L78 Accepts]: Start accepts. Automaton has 14704 states and 42253 transitions. Word has length 75 [2022-01-18 12:15:41,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:41,027 INFO L470 AbstractCegarLoop]: Abstraction has 14704 states and 42253 transitions. [2022-01-18 12:15:41,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.0) internal successors, (100), 20 states have internal predecessors, (100), 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) [2022-01-18 12:15:41,027 INFO L276 IsEmpty]: Start isEmpty. Operand 14704 states and 42253 transitions. [2022-01-18 12:15:41,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:15:41,049 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:41,049 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:41,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-01-18 12:15:41,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:41,250 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:41,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:41,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1569550614, now seen corresponding path program 37 times [2022-01-18 12:15:41,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:41,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538539719] [2022-01-18 12:15:41,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:41,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:41,334 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:41,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:41,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538539719] [2022-01-18 12:15:41,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538539719] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:41,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662367733] [2022-01-18 12:15:41,335 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:15:41,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:41,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:41,336 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:41,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-01-18 12:15:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:41,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:15:41,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:41,521 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:41,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:41,680 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:41,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662367733] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:41,680 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:41,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:15:41,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560046718] [2022-01-18 12:15:41,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:41,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:15:41,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:41,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:15:41,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:15:41,681 INFO L87 Difference]: Start difference. First operand 14704 states and 42253 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 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) [2022-01-18 12:15:44,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:44,608 INFO L93 Difference]: Finished difference Result 23910 states and 68020 transitions. [2022-01-18 12:15:44,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-01-18 12:15:44,608 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 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 75 [2022-01-18 12:15:44,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:44,649 INFO L225 Difference]: With dead ends: 23910 [2022-01-18 12:15:44,649 INFO L226 Difference]: Without dead ends: 23745 [2022-01-18 12:15:44,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4628 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1812, Invalid=10398, Unknown=0, NotChecked=0, Total=12210 [2022-01-18 12:15:44,651 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 602 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 2130 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:44,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 2130 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 12:15:44,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23745 states. [2022-01-18 12:15:44,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23745 to 15332. [2022-01-18 12:15:44,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15332 states, 15331 states have (on average 2.87495923292675) internal successors, (44076), 15331 states have internal predecessors, (44076), 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) [2022-01-18 12:15:44,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15332 states to 15332 states and 44076 transitions. [2022-01-18 12:15:44,998 INFO L78 Accepts]: Start accepts. Automaton has 15332 states and 44076 transitions. Word has length 75 [2022-01-18 12:15:44,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:44,999 INFO L470 AbstractCegarLoop]: Abstraction has 15332 states and 44076 transitions. [2022-01-18 12:15:44,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 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) [2022-01-18 12:15:44,999 INFO L276 IsEmpty]: Start isEmpty. Operand 15332 states and 44076 transitions. [2022-01-18 12:15:45,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:15:45,019 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:45,019 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:45,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-01-18 12:15:45,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-01-18 12:15:45,219 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:45,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:45,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1019987642, now seen corresponding path program 38 times [2022-01-18 12:15:45,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:45,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797896525] [2022-01-18 12:15:45,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:45,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:45,329 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:45,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:45,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797896525] [2022-01-18 12:15:45,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797896525] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:45,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324216159] [2022-01-18 12:15:45,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:15:45,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:45,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:45,331 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:45,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-01-18 12:15:45,390 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:15:45,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:45,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:15:45,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:45,511 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:45,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:45,647 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:45,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [324216159] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:45,647 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:45,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:15:45,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929613129] [2022-01-18 12:15:45,648 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:45,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:15:45,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:45,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:15:45,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:15:45,648 INFO L87 Difference]: Start difference. First operand 15332 states and 44076 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 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) [2022-01-18 12:15:47,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:47,004 INFO L93 Difference]: Finished difference Result 22691 states and 64784 transitions. [2022-01-18 12:15:47,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-18 12:15:47,005 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 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 75 [2022-01-18 12:15:47,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:47,045 INFO L225 Difference]: With dead ends: 22691 [2022-01-18 12:15:47,045 INFO L226 Difference]: Without dead ends: 22511 [2022-01-18 12:15:47,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1198 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=751, Invalid=3281, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 12:15:47,046 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 612 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:47,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [612 Valid, 1426 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:15:47,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22511 states. [2022-01-18 12:15:47,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22511 to 15528. [2022-01-18 12:15:47,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15528 states, 15527 states have (on average 2.872093772138855) internal successors, (44595), 15527 states have internal predecessors, (44595), 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) [2022-01-18 12:15:47,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15528 states to 15528 states and 44595 transitions. [2022-01-18 12:15:47,442 INFO L78 Accepts]: Start accepts. Automaton has 15528 states and 44595 transitions. Word has length 75 [2022-01-18 12:15:47,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:47,442 INFO L470 AbstractCegarLoop]: Abstraction has 15528 states and 44595 transitions. [2022-01-18 12:15:47,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 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) [2022-01-18 12:15:47,442 INFO L276 IsEmpty]: Start isEmpty. Operand 15528 states and 44595 transitions. [2022-01-18 12:15:47,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:15:47,463 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:47,463 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:47,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-01-18 12:15:47,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-01-18 12:15:47,664 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:47,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:47,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1062708802, now seen corresponding path program 39 times [2022-01-18 12:15:47,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:47,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008495861] [2022-01-18 12:15:47,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:47,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:47,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:47,747 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:47,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:47,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008495861] [2022-01-18 12:15:47,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008495861] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:47,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21122701] [2022-01-18 12:15:47,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:15:47,747 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:47,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:47,748 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:47,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-01-18 12:15:47,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:15:47,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:47,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:15:47,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:47,932 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:47,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:48,090 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:48,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21122701] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:48,091 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:48,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-18 12:15:48,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868614912] [2022-01-18 12:15:48,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:48,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 12:15:48,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:48,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 12:15:48,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-01-18 12:15:48,092 INFO L87 Difference]: Start difference. First operand 15528 states and 44595 transitions. Second operand has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 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) [2022-01-18 12:15:49,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:49,937 INFO L93 Difference]: Finished difference Result 20081 states and 57112 transitions. [2022-01-18 12:15:49,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-18 12:15:49,938 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 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 75 [2022-01-18 12:15:49,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:49,968 INFO L225 Difference]: With dead ends: 20081 [2022-01-18 12:15:49,969 INFO L226 Difference]: Without dead ends: 20033 [2022-01-18 12:15:49,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2776 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1165, Invalid=6667, Unknown=0, NotChecked=0, Total=7832 [2022-01-18 12:15:49,969 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 534 mSDsluCounter, 1470 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:49,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 1527 Invalid, 807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:15:49,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20033 states. [2022-01-18 12:15:50,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20033 to 16404. [2022-01-18 12:15:50,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16404 states, 16403 states have (on average 2.8733768213131743) internal successors, (47132), 16403 states have internal predecessors, (47132), 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) [2022-01-18 12:15:50,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16404 states to 16404 states and 47132 transitions. [2022-01-18 12:15:50,262 INFO L78 Accepts]: Start accepts. Automaton has 16404 states and 47132 transitions. Word has length 75 [2022-01-18 12:15:50,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:50,262 INFO L470 AbstractCegarLoop]: Abstraction has 16404 states and 47132 transitions. [2022-01-18 12:15:50,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 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) [2022-01-18 12:15:50,262 INFO L276 IsEmpty]: Start isEmpty. Operand 16404 states and 47132 transitions. [2022-01-18 12:15:50,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:15:50,284 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:50,284 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:50,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-01-18 12:15:50,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-01-18 12:15:50,485 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:50,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:50,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1041991416, now seen corresponding path program 40 times [2022-01-18 12:15:50,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:50,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662165469] [2022-01-18 12:15:50,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:50,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:50,579 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:50,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:50,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662165469] [2022-01-18 12:15:50,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662165469] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:50,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068909665] [2022-01-18 12:15:50,579 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:15:50,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:50,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:50,580 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:50,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-01-18 12:15:50,647 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:15:50,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:50,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:15:50,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:50,774 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:50,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:50,926 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:50,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068909665] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:50,926 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:50,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:15:50,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584361873] [2022-01-18 12:15:50,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:50,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:15:50,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:50,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:15:50,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:15:50,927 INFO L87 Difference]: Start difference. First operand 16404 states and 47132 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 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) [2022-01-18 12:15:54,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:54,009 INFO L93 Difference]: Finished difference Result 22690 states and 64575 transitions. [2022-01-18 12:15:54,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-01-18 12:15:54,010 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 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 75 [2022-01-18 12:15:54,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:54,045 INFO L225 Difference]: With dead ends: 22690 [2022-01-18 12:15:54,045 INFO L226 Difference]: Without dead ends: 22630 [2022-01-18 12:15:54,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4575 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2158, Invalid=10052, Unknown=0, NotChecked=0, Total=12210 [2022-01-18 12:15:54,046 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 790 mSDsluCounter, 1944 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 1957 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:54,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [790 Valid, 1957 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 12:15:54,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22630 states. [2022-01-18 12:15:54,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22630 to 17120. [2022-01-18 12:15:54,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17120 states, 17119 states have (on average 2.8759273322039838) internal successors, (49233), 17119 states have internal predecessors, (49233), 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) [2022-01-18 12:15:54,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17120 states to 17120 states and 49233 transitions. [2022-01-18 12:15:54,349 INFO L78 Accepts]: Start accepts. Automaton has 17120 states and 49233 transitions. Word has length 75 [2022-01-18 12:15:54,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:54,349 INFO L470 AbstractCegarLoop]: Abstraction has 17120 states and 49233 transitions. [2022-01-18 12:15:54,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 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) [2022-01-18 12:15:54,349 INFO L276 IsEmpty]: Start isEmpty. Operand 17120 states and 49233 transitions. [2022-01-18 12:15:54,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:15:54,371 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:54,371 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:54,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-01-18 12:15:54,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2022-01-18 12:15:54,579 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:54,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:54,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1440220374, now seen corresponding path program 41 times [2022-01-18 12:15:54,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:54,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236338902] [2022-01-18 12:15:54,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:54,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:54,653 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:54,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:54,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236338902] [2022-01-18 12:15:54,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236338902] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:54,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099539144] [2022-01-18 12:15:54,653 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:15:54,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:54,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:54,655 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:54,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-01-18 12:15:54,722 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:15:54,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:54,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:15:54,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:54,870 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:54,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:55,026 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:55,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099539144] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:55,027 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:55,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-18 12:15:55,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091314644] [2022-01-18 12:15:55,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:55,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 12:15:55,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:55,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 12:15:55,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-01-18 12:15:55,028 INFO L87 Difference]: Start difference. First operand 17120 states and 49233 transitions. Second operand has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 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) [2022-01-18 12:15:56,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:56,958 INFO L93 Difference]: Finished difference Result 22004 states and 62810 transitions. [2022-01-18 12:15:56,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-18 12:15:56,959 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 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 75 [2022-01-18 12:15:56,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:57,000 INFO L225 Difference]: With dead ends: 22004 [2022-01-18 12:15:57,000 INFO L226 Difference]: Without dead ends: 21899 [2022-01-18 12:15:57,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2611 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1247, Invalid=6409, Unknown=0, NotChecked=0, Total=7656 [2022-01-18 12:15:57,002 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 548 mSDsluCounter, 1550 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:57,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [548 Valid, 1591 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:15:57,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21899 states. [2022-01-18 12:15:57,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21899 to 17596. [2022-01-18 12:15:57,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17596 states, 17595 states have (on average 2.8738846263142936) internal successors, (50566), 17595 states have internal predecessors, (50566), 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) [2022-01-18 12:15:57,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17596 states to 17596 states and 50566 transitions. [2022-01-18 12:15:57,401 INFO L78 Accepts]: Start accepts. Automaton has 17596 states and 50566 transitions. Word has length 75 [2022-01-18 12:15:57,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:57,401 INFO L470 AbstractCegarLoop]: Abstraction has 17596 states and 50566 transitions. [2022-01-18 12:15:57,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 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) [2022-01-18 12:15:57,401 INFO L276 IsEmpty]: Start isEmpty. Operand 17596 states and 50566 transitions. [2022-01-18 12:15:57,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:15:57,424 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:57,424 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:57,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-01-18 12:15:57,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:57,625 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:57,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:57,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1447491872, now seen corresponding path program 42 times [2022-01-18 12:15:57,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:57,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44676729] [2022-01-18 12:15:57,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:57,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:57,705 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:57,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:57,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44676729] [2022-01-18 12:15:57,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44676729] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:57,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [746674386] [2022-01-18 12:15:57,705 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:15:57,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:57,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:57,706 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:57,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-01-18 12:15:57,768 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 12:15:57,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:15:57,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:15:57,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:15:57,879 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:57,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:15:58,027 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:58,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [746674386] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:15:58,027 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:15:58,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-18 12:15:58,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857867369] [2022-01-18 12:15:58,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:15:58,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 12:15:58,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:15:58,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 12:15:58,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2022-01-18 12:15:58,028 INFO L87 Difference]: Start difference. First operand 17596 states and 50566 transitions. Second operand has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 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) [2022-01-18 12:15:59,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:15:59,306 INFO L93 Difference]: Finished difference Result 20505 states and 58358 transitions. [2022-01-18 12:15:59,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 12:15:59,306 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 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 75 [2022-01-18 12:15:59,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:15:59,341 INFO L225 Difference]: With dead ends: 20505 [2022-01-18 12:15:59,341 INFO L226 Difference]: Without dead ends: 20457 [2022-01-18 12:15:59,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1266 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=734, Invalid=3298, Unknown=0, NotChecked=0, Total=4032 [2022-01-18 12:15:59,342 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 437 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:15:59,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 1423 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:15:59,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20457 states. [2022-01-18 12:15:59,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20457 to 18060. [2022-01-18 12:15:59,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18060 states, 18059 states have (on average 2.874024032338446) internal successors, (51902), 18059 states have internal predecessors, (51902), 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) [2022-01-18 12:15:59,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18060 states to 18060 states and 51902 transitions. [2022-01-18 12:15:59,669 INFO L78 Accepts]: Start accepts. Automaton has 18060 states and 51902 transitions. Word has length 75 [2022-01-18 12:15:59,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:15:59,670 INFO L470 AbstractCegarLoop]: Abstraction has 18060 states and 51902 transitions. [2022-01-18 12:15:59,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 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) [2022-01-18 12:15:59,670 INFO L276 IsEmpty]: Start isEmpty. Operand 18060 states and 51902 transitions. [2022-01-18 12:15:59,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:15:59,696 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:15:59,696 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:15:59,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-01-18 12:15:59,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:59,897 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:15:59,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:15:59,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1468209258, now seen corresponding path program 43 times [2022-01-18 12:15:59,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:15:59,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219798589] [2022-01-18 12:15:59,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:15:59,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:15:59,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:15:59,973 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:15:59,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:15:59,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219798589] [2022-01-18 12:15:59,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219798589] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:15:59,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780209766] [2022-01-18 12:15:59,973 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:15:59,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:15:59,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:15:59,974 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:15:59,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-01-18 12:16:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:00,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:16:00,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:00,142 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:00,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:00,345 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:00,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780209766] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:00,346 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:00,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:16:00,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601468364] [2022-01-18 12:16:00,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:00,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:16:00,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:00,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:16:00,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:16:00,346 INFO L87 Difference]: Start difference. First operand 18060 states and 51902 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 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) [2022-01-18 12:16:01,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:01,535 INFO L93 Difference]: Finished difference Result 21387 states and 60825 transitions. [2022-01-18 12:16:01,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-18 12:16:01,536 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 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 75 [2022-01-18 12:16:01,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:01,580 INFO L225 Difference]: With dead ends: 21387 [2022-01-18 12:16:01,580 INFO L226 Difference]: Without dead ends: 21327 [2022-01-18 12:16:01,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 801 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=645, Invalid=2325, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 12:16:01,581 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 436 mSDsluCounter, 1448 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1489 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:01,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 1489 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:16:01,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21327 states. [2022-01-18 12:16:01,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21327 to 18008. [2022-01-18 12:16:01,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18008 states, 18007 states have (on average 2.8728272338535015) internal successors, (51731), 18007 states have internal predecessors, (51731), 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) [2022-01-18 12:16:01,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18008 states to 18008 states and 51731 transitions. [2022-01-18 12:16:01,983 INFO L78 Accepts]: Start accepts. Automaton has 18008 states and 51731 transitions. Word has length 75 [2022-01-18 12:16:01,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:01,984 INFO L470 AbstractCegarLoop]: Abstraction has 18008 states and 51731 transitions. [2022-01-18 12:16:01,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 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) [2022-01-18 12:16:01,984 INFO L276 IsEmpty]: Start isEmpty. Operand 18008 states and 51731 transitions. [2022-01-18 12:16:02,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:16:02,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:02,008 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:02,024 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-01-18 12:16:02,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-01-18 12:16:02,209 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:02,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:02,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1149797152, now seen corresponding path program 44 times [2022-01-18 12:16:02,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:02,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760188742] [2022-01-18 12:16:02,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:02,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:02,288 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:02,288 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:02,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760188742] [2022-01-18 12:16:02,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760188742] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:02,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230920303] [2022-01-18 12:16:02,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:16:02,289 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:02,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:02,290 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:02,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-01-18 12:16:02,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:16:02,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:02,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:16:02,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:02,472 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:02,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:02,622 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:02,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230920303] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:02,623 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:02,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-01-18 12:16:02,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315373183] [2022-01-18 12:16:02,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:02,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 12:16:02,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:02,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 12:16:02,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-01-18 12:16:02,624 INFO L87 Difference]: Start difference. First operand 18008 states and 51731 transitions. Second operand has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 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) [2022-01-18 12:16:03,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:03,290 INFO L93 Difference]: Finished difference Result 18902 states and 54100 transitions. [2022-01-18 12:16:03,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 12:16:03,291 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 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 75 [2022-01-18 12:16:03,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:03,323 INFO L225 Difference]: With dead ends: 18902 [2022-01-18 12:16:03,323 INFO L226 Difference]: Without dead ends: 18830 [2022-01-18 12:16:03,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 489 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=319, Invalid=1573, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 12:16:03,323 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 240 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:03,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [240 Valid, 1431 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:16:03,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18830 states. [2022-01-18 12:16:03,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18830 to 18028. [2022-01-18 12:16:03,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18028 states, 18027 states have (on average 2.872469074166528) internal successors, (51782), 18027 states have internal predecessors, (51782), 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) [2022-01-18 12:16:03,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18028 states to 18028 states and 51782 transitions. [2022-01-18 12:16:03,619 INFO L78 Accepts]: Start accepts. Automaton has 18028 states and 51782 transitions. Word has length 75 [2022-01-18 12:16:03,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:03,619 INFO L470 AbstractCegarLoop]: Abstraction has 18028 states and 51782 transitions. [2022-01-18 12:16:03,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 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) [2022-01-18 12:16:03,619 INFO L276 IsEmpty]: Start isEmpty. Operand 18028 states and 51782 transitions. [2022-01-18 12:16:03,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:16:03,642 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:03,642 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:03,658 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-01-18 12:16:03,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:03,851 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:03,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:03,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1333578238, now seen corresponding path program 45 times [2022-01-18 12:16:03,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:03,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453672383] [2022-01-18 12:16:03,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:03,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:03,949 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:03,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:03,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453672383] [2022-01-18 12:16:03,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453672383] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:03,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989696389] [2022-01-18 12:16:03,950 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:16:03,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:03,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:03,951 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:03,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-01-18 12:16:04,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:16:04,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:04,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:16:04,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:04,157 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:04,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:04,346 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:04,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989696389] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:04,352 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:04,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-18 12:16:04,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674328473] [2022-01-18 12:16:04,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:04,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 12:16:04,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:04,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 12:16:04,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-01-18 12:16:04,354 INFO L87 Difference]: Start difference. First operand 18028 states and 51782 transitions. Second operand has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 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) [2022-01-18 12:16:05,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:05,779 INFO L93 Difference]: Finished difference Result 22013 states and 62717 transitions. [2022-01-18 12:16:05,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 12:16:05,779 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 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 75 [2022-01-18 12:16:05,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:05,818 INFO L225 Difference]: With dead ends: 22013 [2022-01-18 12:16:05,818 INFO L226 Difference]: Without dead ends: 21965 [2022-01-18 12:16:05,819 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1903 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=941, Invalid=4911, Unknown=0, NotChecked=0, Total=5852 [2022-01-18 12:16:05,820 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 486 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:05,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 1242 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:16:05,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21965 states. [2022-01-18 12:16:06,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21965 to 18656. [2022-01-18 12:16:06,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18656 states, 18655 states have (on average 2.874135620477084) internal successors, (53617), 18655 states have internal predecessors, (53617), 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) [2022-01-18 12:16:06,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18656 states to 18656 states and 53617 transitions. [2022-01-18 12:16:06,174 INFO L78 Accepts]: Start accepts. Automaton has 18656 states and 53617 transitions. Word has length 75 [2022-01-18 12:16:06,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:06,174 INFO L470 AbstractCegarLoop]: Abstraction has 18656 states and 53617 transitions. [2022-01-18 12:16:06,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 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) [2022-01-18 12:16:06,174 INFO L276 IsEmpty]: Start isEmpty. Operand 18656 states and 53617 transitions. [2022-01-18 12:16:06,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:16:06,199 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:06,199 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:06,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-01-18 12:16:06,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-01-18 12:16:06,400 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:06,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:06,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1312860852, now seen corresponding path program 46 times [2022-01-18 12:16:06,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:06,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122351837] [2022-01-18 12:16:06,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:06,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:06,478 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:06,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:06,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122351837] [2022-01-18 12:16:06,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122351837] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:06,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453732345] [2022-01-18 12:16:06,478 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:16:06,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:06,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:06,479 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:06,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-01-18 12:16:06,553 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:16:06,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:06,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:16:06,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:06,654 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:06,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:06,822 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:06,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453732345] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:06,823 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:06,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:16:06,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079023450] [2022-01-18 12:16:06,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:06,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:16:06,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:06,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:16:06,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:16:06,823 INFO L87 Difference]: Start difference. First operand 18656 states and 53617 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 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) [2022-01-18 12:16:09,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:09,613 INFO L93 Difference]: Finished difference Result 23691 states and 67298 transitions. [2022-01-18 12:16:09,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-01-18 12:16:09,614 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 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 75 [2022-01-18 12:16:09,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:09,657 INFO L225 Difference]: With dead ends: 23691 [2022-01-18 12:16:09,657 INFO L226 Difference]: Without dead ends: 23631 [2022-01-18 12:16:09,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4120 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1898, Invalid=9444, Unknown=0, NotChecked=0, Total=11342 [2022-01-18 12:16:09,658 INFO L933 BasicCegarLoop]: 168 mSDtfsCounter, 674 mSDsluCounter, 2014 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 2050 SdHoareTripleChecker+Invalid, 991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:09,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [674 Valid, 2050 Invalid, 991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 12:16:09,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23631 states. [2022-01-18 12:16:10,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23631 to 18820. [2022-01-18 12:16:10,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18820 states, 18819 states have (on average 2.874966788883575) internal successors, (54104), 18819 states have internal predecessors, (54104), 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) [2022-01-18 12:16:10,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18820 states to 18820 states and 54104 transitions. [2022-01-18 12:16:10,069 INFO L78 Accepts]: Start accepts. Automaton has 18820 states and 54104 transitions. Word has length 75 [2022-01-18 12:16:10,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:10,069 INFO L470 AbstractCegarLoop]: Abstraction has 18820 states and 54104 transitions. [2022-01-18 12:16:10,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 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) [2022-01-18 12:16:10,069 INFO L276 IsEmpty]: Start isEmpty. Operand 18820 states and 54104 transitions. [2022-01-18 12:16:10,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:16:10,096 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:10,096 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:10,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-01-18 12:16:10,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:10,303 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:10,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:10,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1711089810, now seen corresponding path program 47 times [2022-01-18 12:16:10,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:10,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879765888] [2022-01-18 12:16:10,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:10,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:10,381 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:10,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:10,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879765888] [2022-01-18 12:16:10,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879765888] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:10,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618079329] [2022-01-18 12:16:10,381 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:16:10,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:10,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:10,382 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:10,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-01-18 12:16:10,451 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:16:10,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:10,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:16:10,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:10,596 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:10,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:10,802 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:10,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618079329] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:10,802 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:10,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-18 12:16:10,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725925262] [2022-01-18 12:16:10,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:10,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 12:16:10,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:10,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 12:16:10,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-01-18 12:16:10,803 INFO L87 Difference]: Start difference. First operand 18820 states and 54104 transitions. Second operand has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 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) [2022-01-18 12:16:12,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:12,627 INFO L93 Difference]: Finished difference Result 22773 states and 65043 transitions. [2022-01-18 12:16:12,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-18 12:16:12,627 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 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 75 [2022-01-18 12:16:12,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:12,669 INFO L225 Difference]: With dead ends: 22773 [2022-01-18 12:16:12,669 INFO L226 Difference]: Without dead ends: 22668 [2022-01-18 12:16:12,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2182 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1133, Invalid=5673, Unknown=0, NotChecked=0, Total=6806 [2022-01-18 12:16:12,670 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 449 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:12,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [449 Valid, 1645 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:16:12,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22668 states. [2022-01-18 12:16:12,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22668 to 19184. [2022-01-18 12:16:12,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19184 states, 19183 states have (on average 2.8723870093311787) internal successors, (55101), 19183 states have internal predecessors, (55101), 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) [2022-01-18 12:16:13,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19184 states to 19184 states and 55101 transitions. [2022-01-18 12:16:13,022 INFO L78 Accepts]: Start accepts. Automaton has 19184 states and 55101 transitions. Word has length 75 [2022-01-18 12:16:13,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:13,022 INFO L470 AbstractCegarLoop]: Abstraction has 19184 states and 55101 transitions. [2022-01-18 12:16:13,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.444444444444445) internal successors, (98), 18 states have internal predecessors, (98), 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) [2022-01-18 12:16:13,022 INFO L276 IsEmpty]: Start isEmpty. Operand 19184 states and 55101 transitions. [2022-01-18 12:16:13,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:16:13,046 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:13,047 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:13,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-01-18 12:16:13,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:13,248 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:13,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:13,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1176622436, now seen corresponding path program 48 times [2022-01-18 12:16:13,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:13,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842740681] [2022-01-18 12:16:13,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:13,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:13,328 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:13,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:13,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842740681] [2022-01-18 12:16:13,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842740681] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:13,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020331928] [2022-01-18 12:16:13,328 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:16:13,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:13,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:13,336 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:13,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-01-18 12:16:13,406 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 12:16:13,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:13,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:16:13,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:13,554 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:13,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:13,713 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:13,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020331928] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:13,713 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:13,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-18 12:16:13,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252753239] [2022-01-18 12:16:13,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:13,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 12:16:13,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:13,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 12:16:13,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-01-18 12:16:13,714 INFO L87 Difference]: Start difference. First operand 19184 states and 55101 transitions. Second operand has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 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) [2022-01-18 12:16:14,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:14,835 INFO L93 Difference]: Finished difference Result 22162 states and 63098 transitions. [2022-01-18 12:16:14,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-01-18 12:16:14,835 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 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 75 [2022-01-18 12:16:14,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:14,876 INFO L225 Difference]: With dead ends: 22162 [2022-01-18 12:16:14,877 INFO L226 Difference]: Without dead ends: 22114 [2022-01-18 12:16:14,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=605, Invalid=2935, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 12:16:14,877 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 457 mSDsluCounter, 1433 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:14,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 1475 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:16:14,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22114 states. [2022-01-18 12:16:15,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22114 to 19912. [2022-01-18 12:16:15,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19912 states, 19911 states have (on average 2.8705238310481644) internal successors, (57155), 19911 states have internal predecessors, (57155), 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) [2022-01-18 12:16:15,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19912 states to 19912 states and 57155 transitions. [2022-01-18 12:16:15,230 INFO L78 Accepts]: Start accepts. Automaton has 19912 states and 57155 transitions. Word has length 75 [2022-01-18 12:16:15,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:15,230 INFO L470 AbstractCegarLoop]: Abstraction has 19912 states and 57155 transitions. [2022-01-18 12:16:15,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 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) [2022-01-18 12:16:15,230 INFO L276 IsEmpty]: Start isEmpty. Operand 19912 states and 57155 transitions. [2022-01-18 12:16:15,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:16:15,256 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:15,256 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:15,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-01-18 12:16:15,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-01-18 12:16:15,457 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:15,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:15,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1197339822, now seen corresponding path program 49 times [2022-01-18 12:16:15,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:15,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997860325] [2022-01-18 12:16:15,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:15,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:15,555 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:15,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:15,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997860325] [2022-01-18 12:16:15,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997860325] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:15,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398769259] [2022-01-18 12:16:15,555 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:16:15,555 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:15,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:15,556 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:15,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-01-18 12:16:15,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:15,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:16:15,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:15,744 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:15,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:15,899 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:15,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398769259] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:15,899 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:15,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:16:15,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741903333] [2022-01-18 12:16:15,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:15,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:16:15,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:15,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:16:15,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:16:15,900 INFO L87 Difference]: Start difference. First operand 19912 states and 57155 transitions. Second operand has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 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) [2022-01-18 12:16:17,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:17,345 INFO L93 Difference]: Finished difference Result 24111 states and 68592 transitions. [2022-01-18 12:16:17,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-18 12:16:17,345 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 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 75 [2022-01-18 12:16:17,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:17,387 INFO L225 Difference]: With dead ends: 24111 [2022-01-18 12:16:17,387 INFO L226 Difference]: Without dead ends: 24051 [2022-01-18 12:16:17,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1217 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=805, Invalid=3485, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 12:16:17,388 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 446 mSDsluCounter, 1871 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:17,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 1896 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:16:17,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24051 states. [2022-01-18 12:16:17,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24051 to 20240. [2022-01-18 12:16:17,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20240 states, 20239 states have (on average 2.870151687336331) internal successors, (58089), 20239 states have internal predecessors, (58089), 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) [2022-01-18 12:16:17,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20240 states to 20240 states and 58089 transitions. [2022-01-18 12:16:17,770 INFO L78 Accepts]: Start accepts. Automaton has 20240 states and 58089 transitions. Word has length 75 [2022-01-18 12:16:17,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:17,770 INFO L470 AbstractCegarLoop]: Abstraction has 20240 states and 58089 transitions. [2022-01-18 12:16:17,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.157894736842105) internal successors, (98), 19 states have internal predecessors, (98), 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) [2022-01-18 12:16:17,770 INFO L276 IsEmpty]: Start isEmpty. Operand 20240 states and 58089 transitions. [2022-01-18 12:16:17,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:16:17,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:17,800 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:17,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-01-18 12:16:18,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-01-18 12:16:18,001 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:18,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:18,001 INFO L85 PathProgramCache]: Analyzing trace with hash 878927716, now seen corresponding path program 50 times [2022-01-18 12:16:18,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:18,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425769249] [2022-01-18 12:16:18,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:18,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:18,122 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:18,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:18,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425769249] [2022-01-18 12:16:18,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425769249] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:18,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508838852] [2022-01-18 12:16:18,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:16:18,122 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:18,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:18,123 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:18,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-01-18 12:16:18,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:16:18,190 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:18,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:16:18,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:18,309 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:18,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:18,460 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:18,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508838852] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:18,461 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:18,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-01-18 12:16:18,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439008814] [2022-01-18 12:16:18,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:18,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 12:16:18,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:18,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 12:16:18,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-01-18 12:16:18,462 INFO L87 Difference]: Start difference. First operand 20240 states and 58089 transitions. Second operand has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 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) [2022-01-18 12:16:19,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:19,106 INFO L93 Difference]: Finished difference Result 21080 states and 60318 transitions. [2022-01-18 12:16:19,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 12:16:19,106 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 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 75 [2022-01-18 12:16:19,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:19,142 INFO L225 Difference]: With dead ends: 21080 [2022-01-18 12:16:19,143 INFO L226 Difference]: Without dead ends: 21008 [2022-01-18 12:16:19,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=301, Invalid=1591, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 12:16:19,143 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 288 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1358 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:19,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 1358 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:16:19,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21008 states. [2022-01-18 12:16:19,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21008 to 20256. [2022-01-18 12:16:19,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20256 states, 20255 states have (on average 2.8698592940014813) internal successors, (58129), 20255 states have internal predecessors, (58129), 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) [2022-01-18 12:16:19,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20256 states to 20256 states and 58129 transitions. [2022-01-18 12:16:19,503 INFO L78 Accepts]: Start accepts. Automaton has 20256 states and 58129 transitions. Word has length 75 [2022-01-18 12:16:19,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:19,503 INFO L470 AbstractCegarLoop]: Abstraction has 20256 states and 58129 transitions. [2022-01-18 12:16:19,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 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) [2022-01-18 12:16:19,503 INFO L276 IsEmpty]: Start isEmpty. Operand 20256 states and 58129 transitions. [2022-01-18 12:16:19,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:16:19,530 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:19,530 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:19,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-01-18 12:16:19,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable60 [2022-01-18 12:16:19,731 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:19,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:19,731 INFO L85 PathProgramCache]: Analyzing trace with hash 681668142, now seen corresponding path program 51 times [2022-01-18 12:16:19,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:19,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234242776] [2022-01-18 12:16:19,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:19,731 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:19,826 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:19,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:19,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234242776] [2022-01-18 12:16:19,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234242776] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:19,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282082036] [2022-01-18 12:16:19,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:16:19,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:19,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:19,828 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:19,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-01-18 12:16:19,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 12:16:19,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:19,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:16:19,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:20,053 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:20,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:20,212 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:20,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282082036] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:20,212 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:20,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2022-01-18 12:16:20,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661326588] [2022-01-18 12:16:20,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:20,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 12:16:20,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:20,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 12:16:20,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-01-18 12:16:20,213 INFO L87 Difference]: Start difference. First operand 20256 states and 58129 transitions. Second operand has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 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) [2022-01-18 12:16:21,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:21,646 INFO L93 Difference]: Finished difference Result 25665 states and 73225 transitions. [2022-01-18 12:16:21,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-18 12:16:21,654 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 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 75 [2022-01-18 12:16:21,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:21,706 INFO L225 Difference]: With dead ends: 25665 [2022-01-18 12:16:21,706 INFO L226 Difference]: Without dead ends: 25617 [2022-01-18 12:16:21,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=656, Invalid=2766, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 12:16:21,707 INFO L933 BasicCegarLoop]: 135 mSDtfsCounter, 465 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:21,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 1548 Invalid, 804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:16:21,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25617 states. [2022-01-18 12:16:22,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25617 to 22132. [2022-01-18 12:16:22,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22132 states, 22131 states have (on average 2.8727124847498984) internal successors, (63576), 22131 states have internal predecessors, (63576), 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) [2022-01-18 12:16:22,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22132 states to 22132 states and 63576 transitions. [2022-01-18 12:16:22,196 INFO L78 Accepts]: Start accepts. Automaton has 22132 states and 63576 transitions. Word has length 75 [2022-01-18 12:16:22,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:22,196 INFO L470 AbstractCegarLoop]: Abstraction has 22132 states and 63576 transitions. [2022-01-18 12:16:22,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.2631578947368425) internal successors, (100), 19 states have internal predecessors, (100), 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) [2022-01-18 12:16:22,196 INFO L276 IsEmpty]: Start isEmpty. Operand 22132 states and 63576 transitions. [2022-01-18 12:16:22,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:16:22,227 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:22,227 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:22,243 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Ended with exit code 0 [2022-01-18 12:16:22,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:22,443 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:22,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:22,443 INFO L85 PathProgramCache]: Analyzing trace with hash 702385528, now seen corresponding path program 52 times [2022-01-18 12:16:22,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:22,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006248357] [2022-01-18 12:16:22,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:22,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:22,520 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:22,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:22,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006248357] [2022-01-18 12:16:22,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006248357] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:22,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986735517] [2022-01-18 12:16:22,520 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:16:22,520 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:22,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:22,521 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:22,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-01-18 12:16:22,586 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:16:22,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:22,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:16:22,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:22,700 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:22,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:22,882 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:22,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986735517] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:22,883 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:22,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2022-01-18 12:16:22,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338597026] [2022-01-18 12:16:22,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:22,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 12:16:22,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:22,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 12:16:22,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-01-18 12:16:22,883 INFO L87 Difference]: Start difference. First operand 22132 states and 63576 transitions. Second operand has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 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) [2022-01-18 12:16:24,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:24,090 INFO L93 Difference]: Finished difference Result 25750 states and 73381 transitions. [2022-01-18 12:16:24,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-01-18 12:16:24,091 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 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 75 [2022-01-18 12:16:24,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:24,140 INFO L225 Difference]: With dead ends: 25750 [2022-01-18 12:16:24,140 INFO L226 Difference]: Without dead ends: 25690 [2022-01-18 12:16:24,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 957 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=707, Invalid=2833, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 12:16:24,141 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 618 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 1390 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:24,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 1390 Invalid, 681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 12:16:24,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25690 states. [2022-01-18 12:16:24,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25690 to 21240. [2022-01-18 12:16:24,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21240 states, 21239 states have (on average 2.8690145487075664) internal successors, (60935), 21239 states have internal predecessors, (60935), 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) [2022-01-18 12:16:24,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21240 states to 21240 states and 60935 transitions. [2022-01-18 12:16:24,523 INFO L78 Accepts]: Start accepts. Automaton has 21240 states and 60935 transitions. Word has length 75 [2022-01-18 12:16:24,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:24,524 INFO L470 AbstractCegarLoop]: Abstraction has 21240 states and 60935 transitions. [2022-01-18 12:16:24,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.95) internal successors, (99), 20 states have internal predecessors, (99), 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) [2022-01-18 12:16:24,524 INFO L276 IsEmpty]: Start isEmpty. Operand 21240 states and 60935 transitions. [2022-01-18 12:16:24,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:16:24,551 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:24,551 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:24,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Ended with exit code 0 [2022-01-18 12:16:24,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2022-01-18 12:16:24,755 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:24,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:24,756 INFO L85 PathProgramCache]: Analyzing trace with hash 383973422, now seen corresponding path program 53 times [2022-01-18 12:16:24,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:24,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725279151] [2022-01-18 12:16:24,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:24,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:24,833 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:24,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:24,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725279151] [2022-01-18 12:16:24,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725279151] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:24,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152953861] [2022-01-18 12:16:24,833 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:16:24,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:24,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:24,834 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:24,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-01-18 12:16:24,901 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:16:24,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:24,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:16:24,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:25,027 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:25,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:25,181 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:25,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152953861] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:25,181 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:25,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-01-18 12:16:25,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426813972] [2022-01-18 12:16:25,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:25,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 12:16:25,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:25,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 12:16:25,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-01-18 12:16:25,182 INFO L87 Difference]: Start difference. First operand 21240 states and 60935 transitions. Second operand has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 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) [2022-01-18 12:16:25,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:25,917 INFO L93 Difference]: Finished difference Result 22388 states and 63935 transitions. [2022-01-18 12:16:25,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 12:16:25,917 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 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 75 [2022-01-18 12:16:25,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:25,964 INFO L225 Difference]: With dead ends: 22388 [2022-01-18 12:16:25,964 INFO L226 Difference]: Without dead ends: 22316 [2022-01-18 12:16:25,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=339, Invalid=1553, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 12:16:25,965 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 331 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1369 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:25,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 1369 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 12:16:25,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22316 states. [2022-01-18 12:16:26,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22316 to 21248. [2022-01-18 12:16:26,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21248 states, 21247 states have (on average 2.8691579987762976) internal successors, (60961), 21247 states have internal predecessors, (60961), 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) [2022-01-18 12:16:26,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21248 states to 21248 states and 60961 transitions. [2022-01-18 12:16:26,439 INFO L78 Accepts]: Start accepts. Automaton has 21248 states and 60961 transitions. Word has length 75 [2022-01-18 12:16:26,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:26,439 INFO L470 AbstractCegarLoop]: Abstraction has 21248 states and 60961 transitions. [2022-01-18 12:16:26,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.5) internal successors, (99), 18 states have internal predecessors, (99), 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) [2022-01-18 12:16:26,439 INFO L276 IsEmpty]: Start isEmpty. Operand 21248 states and 60961 transitions. [2022-01-18 12:16:26,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-18 12:16:26,469 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:26,469 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:26,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-01-18 12:16:26,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:26,670 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:26,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:26,670 INFO L85 PathProgramCache]: Analyzing trace with hash 617413212, now seen corresponding path program 54 times [2022-01-18 12:16:26,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:26,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32229772] [2022-01-18 12:16:26,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:26,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:26,739 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:26,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:26,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32229772] [2022-01-18 12:16:26,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32229772] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:26,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504233753] [2022-01-18 12:16:26,739 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:16:26,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:26,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:26,741 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:26,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-01-18 12:16:26,809 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 12:16:26,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:26,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 12:16:26,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:26,932 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:26,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:27,084 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:27,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504233753] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:27,084 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:27,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-01-18 12:16:27,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277618261] [2022-01-18 12:16:27,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:27,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 12:16:27,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:27,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 12:16:27,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-01-18 12:16:27,085 INFO L87 Difference]: Start difference. First operand 21248 states and 60961 transitions. Second operand has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 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) [2022-01-18 12:16:27,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:27,479 INFO L93 Difference]: Finished difference Result 21972 states and 62883 transitions. [2022-01-18 12:16:27,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 12:16:27,479 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 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 75 [2022-01-18 12:16:27,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:27,518 INFO L225 Difference]: With dead ends: 21972 [2022-01-18 12:16:27,518 INFO L226 Difference]: Without dead ends: 21924 [2022-01-18 12:16:27,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 141 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2022-01-18 12:16:27,519 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 242 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:27,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 1122 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 12:16:27,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21924 states. [2022-01-18 12:16:27,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21924 to 21240. [2022-01-18 12:16:27,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21240 states, 21239 states have (on average 2.8690145487075664) internal successors, (60935), 21239 states have internal predecessors, (60935), 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) [2022-01-18 12:16:27,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21240 states to 21240 states and 60935 transitions. [2022-01-18 12:16:27,890 INFO L78 Accepts]: Start accepts. Automaton has 21240 states and 60935 transitions. Word has length 75 [2022-01-18 12:16:27,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:27,890 INFO L470 AbstractCegarLoop]: Abstraction has 21240 states and 60935 transitions. [2022-01-18 12:16:27,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.764705882352941) internal successors, (98), 17 states have internal predecessors, (98), 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) [2022-01-18 12:16:27,890 INFO L276 IsEmpty]: Start isEmpty. Operand 21240 states and 60935 transitions. [2022-01-18 12:16:27,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-18 12:16:27,918 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:27,918 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:27,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-01-18 12:16:28,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:28,120 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:28,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:28,120 INFO L85 PathProgramCache]: Analyzing trace with hash 710815400, now seen corresponding path program 55 times [2022-01-18 12:16:28,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:28,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978351241] [2022-01-18 12:16:28,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:28,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:28,199 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 12:16:28,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:28,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978351241] [2022-01-18 12:16:28,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978351241] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:28,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258835536] [2022-01-18 12:16:28,200 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:16:28,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:28,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:28,201 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:28,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-01-18 12:16:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:28,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 12:16:28,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:28,429 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:16:28,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:28,588 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 12:16:28,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258835536] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:28,588 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:28,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 11 [2022-01-18 12:16:28,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354270119] [2022-01-18 12:16:28,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:28,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 12:16:28,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:28,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 12:16:28,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-01-18 12:16:28,589 INFO L87 Difference]: Start difference. First operand 21240 states and 60935 transitions. Second operand has 11 states, 11 states have (on average 14.727272727272727) internal successors, (162), 11 states have internal predecessors, (162), 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) [2022-01-18 12:16:28,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:28,811 INFO L93 Difference]: Finished difference Result 35624 states and 103549 transitions. [2022-01-18 12:16:28,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 12:16:28,811 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.727272727272727) internal successors, (162), 11 states have internal predecessors, (162), 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 80 [2022-01-18 12:16:28,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:28,890 INFO L225 Difference]: With dead ends: 35624 [2022-01-18 12:16:28,890 INFO L226 Difference]: Without dead ends: 35321 [2022-01-18 12:16:28,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 156 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-01-18 12:16:28,891 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 125 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:28,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 828 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 12:16:29,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35321 states. [2022-01-18 12:16:29,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35321 to 29881. [2022-01-18 12:16:29,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29881 states, 29880 states have (on average 2.897657295850067) internal successors, (86582), 29880 states have internal predecessors, (86582), 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) [2022-01-18 12:16:29,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29881 states to 29881 states and 86582 transitions. [2022-01-18 12:16:29,550 INFO L78 Accepts]: Start accepts. Automaton has 29881 states and 86582 transitions. Word has length 80 [2022-01-18 12:16:29,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:29,550 INFO L470 AbstractCegarLoop]: Abstraction has 29881 states and 86582 transitions. [2022-01-18 12:16:29,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.727272727272727) internal successors, (162), 11 states have internal predecessors, (162), 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) [2022-01-18 12:16:29,550 INFO L276 IsEmpty]: Start isEmpty. Operand 29881 states and 86582 transitions. [2022-01-18 12:16:29,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 12:16:29,596 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:29,596 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:29,611 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Ended with exit code 0 [2022-01-18 12:16:29,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:29,796 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:29,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:29,797 INFO L85 PathProgramCache]: Analyzing trace with hash -58756830, now seen corresponding path program 56 times [2022-01-18 12:16:29,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:29,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232461838] [2022-01-18 12:16:29,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:29,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:29,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:29,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232461838] [2022-01-18 12:16:29,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232461838] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:29,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103893032] [2022-01-18 12:16:29,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:16:29,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:29,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:29,997 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:29,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-01-18 12:16:30,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:16:30,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:30,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:16:30,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:30,291 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:30,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:30,636 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:30,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103893032] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:30,636 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:30,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-01-18 12:16:30,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524344226] [2022-01-18 12:16:30,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:30,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 12:16:30,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:30,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 12:16:30,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=950, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 12:16:30,637 INFO L87 Difference]: Start difference. First operand 29881 states and 86582 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:43,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:16:43,478 INFO L93 Difference]: Finished difference Result 45744 states and 130515 transitions. [2022-01-18 12:16:43,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2022-01-18 12:16:43,478 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-18 12:16:43,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:16:43,570 INFO L225 Difference]: With dead ends: 45744 [2022-01-18 12:16:43,570 INFO L226 Difference]: Without dead ends: 45174 [2022-01-18 12:16:43,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13480 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=4705, Invalid=30827, Unknown=0, NotChecked=0, Total=35532 [2022-01-18 12:16:43,573 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 2400 mSDsluCounter, 4532 mSDsCounter, 0 mSdLazyCounter, 2576 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2400 SdHoareTripleChecker+Valid, 4290 SdHoareTripleChecker+Invalid, 2780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 2576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:16:43,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2400 Valid, 4290 Invalid, 2780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 2576 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-18 12:16:43,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45174 states. [2022-01-18 12:16:44,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45174 to 32125. [2022-01-18 12:16:44,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32125 states, 32124 states have (on average 2.8950628813348276) internal successors, (93001), 32124 states have internal predecessors, (93001), 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) [2022-01-18 12:16:44,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32125 states to 32125 states and 93001 transitions. [2022-01-18 12:16:44,300 INFO L78 Accepts]: Start accepts. Automaton has 32125 states and 93001 transitions. Word has length 85 [2022-01-18 12:16:44,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:16:44,300 INFO L470 AbstractCegarLoop]: Abstraction has 32125 states and 93001 transitions. [2022-01-18 12:16:44,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:16:44,300 INFO L276 IsEmpty]: Start isEmpty. Operand 32125 states and 93001 transitions. [2022-01-18 12:16:44,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 12:16:44,349 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:16:44,349 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:16:44,364 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2022-01-18 12:16:44,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:44,549 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:16:44,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:16:44,550 INFO L85 PathProgramCache]: Analyzing trace with hash -101477990, now seen corresponding path program 57 times [2022-01-18 12:16:44,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:16:44,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693748921] [2022-01-18 12:16:44,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:16:44,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:16:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:16:44,802 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:44,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:16:44,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693748921] [2022-01-18 12:16:44,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693748921] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:16:44,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871376179] [2022-01-18 12:16:44,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:16:44,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:16:44,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:16:44,803 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:16:44,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-01-18 12:16:44,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:16:44,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:16:44,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:16:44,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:16:45,123 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:45,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:16:45,443 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:16:45,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871376179] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:16:45,444 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:16:45,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-01-18 12:16:45,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835526130] [2022-01-18 12:16:45,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:16:45,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 12:16:45,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:16:45,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 12:16:45,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2022-01-18 12:16:45,445 INFO L87 Difference]: Start difference. First operand 32125 states and 93001 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 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) [2022-01-18 12:17:02,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:17:02,039 INFO L93 Difference]: Finished difference Result 41564 states and 118888 transitions. [2022-01-18 12:17:02,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2022-01-18 12:17:02,039 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 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 85 [2022-01-18 12:17:02,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:17:02,119 INFO L225 Difference]: With dead ends: 41564 [2022-01-18 12:17:02,119 INFO L226 Difference]: Without dead ends: 41468 [2022-01-18 12:17:02,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10995 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=3772, Invalid=25640, Unknown=0, NotChecked=0, Total=29412 [2022-01-18 12:17:02,122 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 1196 mSDsluCounter, 4356 mSDsCounter, 0 mSdLazyCounter, 2406 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1196 SdHoareTripleChecker+Valid, 4204 SdHoareTripleChecker+Invalid, 2574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 2406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:17:02,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1196 Valid, 4204 Invalid, 2574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 2406 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-18 12:17:02,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41468 states. [2022-01-18 12:17:02,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41468 to 34425. [2022-01-18 12:17:02,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34425 states, 34424 states have (on average 2.8923425517081105) internal successors, (99566), 34424 states have internal predecessors, (99566), 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) [2022-01-18 12:17:02,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34425 states to 34425 states and 99566 transitions. [2022-01-18 12:17:02,887 INFO L78 Accepts]: Start accepts. Automaton has 34425 states and 99566 transitions. Word has length 85 [2022-01-18 12:17:02,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:17:02,887 INFO L470 AbstractCegarLoop]: Abstraction has 34425 states and 99566 transitions. [2022-01-18 12:17:02,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 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) [2022-01-18 12:17:02,887 INFO L276 IsEmpty]: Start isEmpty. Operand 34425 states and 99566 transitions. [2022-01-18 12:17:02,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 12:17:02,936 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:17:02,936 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:17:02,952 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-01-18 12:17:03,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-01-18 12:17:03,137 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:17:03,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:17:03,137 INFO L85 PathProgramCache]: Analyzing trace with hash -80760604, now seen corresponding path program 58 times [2022-01-18 12:17:03,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:17:03,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027357523] [2022-01-18 12:17:03,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:17:03,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:17:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:17:03,306 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:03,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:17:03,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027357523] [2022-01-18 12:17:03,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027357523] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:17:03,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986344851] [2022-01-18 12:17:03,306 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:17:03,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:17:03,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:17:03,307 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:17:03,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-01-18 12:17:03,382 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:17:03,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:17:03,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:17:03,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:17:03,600 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:03,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:17:03,958 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:03,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986344851] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:17:03,958 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:17:03,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-01-18 12:17:03,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156630020] [2022-01-18 12:17:03,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:17:03,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 12:17:03,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:17:03,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 12:17:03,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 12:17:03,959 INFO L87 Difference]: Start difference. First operand 34425 states and 99566 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:36,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:17:36,746 INFO L93 Difference]: Finished difference Result 48154 states and 137808 transitions. [2022-01-18 12:17:36,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2022-01-18 12:17:36,746 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-18 12:17:36,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:17:36,842 INFO L225 Difference]: With dead ends: 48154 [2022-01-18 12:17:36,842 INFO L226 Difference]: Without dead ends: 48064 [2022-01-18 12:17:36,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22015 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=7064, Invalid=47458, Unknown=0, NotChecked=0, Total=54522 [2022-01-18 12:17:36,845 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 2138 mSDsluCounter, 4604 mSDsCounter, 0 mSdLazyCounter, 2317 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2138 SdHoareTripleChecker+Valid, 4459 SdHoareTripleChecker+Invalid, 2599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 2317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:17:36,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2138 Valid, 4459 Invalid, 2599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 2317 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-18 12:17:36,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48064 states. [2022-01-18 12:17:37,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48064 to 36521. [2022-01-18 12:17:37,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36521 states, 36520 states have (on average 2.894687842278204) internal successors, (105714), 36520 states have internal predecessors, (105714), 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) [2022-01-18 12:17:37,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36521 states to 36521 states and 105714 transitions. [2022-01-18 12:17:37,666 INFO L78 Accepts]: Start accepts. Automaton has 36521 states and 105714 transitions. Word has length 85 [2022-01-18 12:17:37,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:17:37,666 INFO L470 AbstractCegarLoop]: Abstraction has 36521 states and 105714 transitions. [2022-01-18 12:17:37,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:17:37,666 INFO L276 IsEmpty]: Start isEmpty. Operand 36521 states and 105714 transitions. [2022-01-18 12:17:37,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 12:17:37,720 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:17:37,720 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:17:37,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2022-01-18 12:17:37,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable68 [2022-01-18 12:17:37,922 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:17:37,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:17:37,923 INFO L85 PathProgramCache]: Analyzing trace with hash -478989562, now seen corresponding path program 59 times [2022-01-18 12:17:37,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:17:37,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019680377] [2022-01-18 12:17:37,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:17:37,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:17:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:17:38,100 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:38,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:17:38,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019680377] [2022-01-18 12:17:38,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019680377] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:17:38,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269775434] [2022-01-18 12:17:38,101 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:17:38,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:17:38,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:17:38,107 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:17:38,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-01-18 12:17:38,205 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 12:17:38,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:17:38,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:17:38,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:17:38,444 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:38,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:17:38,797 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:17:38,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269775434] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:17:38,798 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:17:38,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-01-18 12:17:38,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682507069] [2022-01-18 12:17:38,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:17:38,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 12:17:38,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:17:38,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 12:17:38,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=955, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 12:17:38,799 INFO L87 Difference]: Start difference. First operand 36521 states and 105714 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:12,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:18:12,700 INFO L93 Difference]: Finished difference Result 50104 states and 143276 transitions. [2022-01-18 12:18:12,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 266 states. [2022-01-18 12:18:12,700 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-18 12:18:12,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:18:12,807 INFO L225 Difference]: With dead ends: 50104 [2022-01-18 12:18:12,807 INFO L226 Difference]: Without dead ends: 49879 [2022-01-18 12:18:12,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 430 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32669 ImplicationChecksByTransitivity, 30.6s TimeCoverageRelationStatistics Valid=8805, Invalid=69315, Unknown=0, NotChecked=0, Total=78120 [2022-01-18 12:18:12,811 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 1859 mSDsluCounter, 5844 mSDsCounter, 0 mSdLazyCounter, 3072 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1859 SdHoareTripleChecker+Valid, 5658 SdHoareTripleChecker+Invalid, 3393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 3072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:18:12,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1859 Valid, 5658 Invalid, 3393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 3072 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-01-18 12:18:12,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49879 states. [2022-01-18 12:18:13,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49879 to 37749. [2022-01-18 12:18:13,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37749 states, 37748 states have (on average 2.890722687294691) internal successors, (109119), 37748 states have internal predecessors, (109119), 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) [2022-01-18 12:18:13,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37749 states to 37749 states and 109119 transitions. [2022-01-18 12:18:13,688 INFO L78 Accepts]: Start accepts. Automaton has 37749 states and 109119 transitions. Word has length 85 [2022-01-18 12:18:13,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:18:13,688 INFO L470 AbstractCegarLoop]: Abstraction has 37749 states and 109119 transitions. [2022-01-18 12:18:13,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:13,688 INFO L276 IsEmpty]: Start isEmpty. Operand 37749 states and 109119 transitions. [2022-01-18 12:18:13,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 12:18:13,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:18:13,746 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:18:13,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-01-18 12:18:13,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-01-18 12:18:13,947 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:18:13,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:18:13,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1886244612, now seen corresponding path program 60 times [2022-01-18 12:18:13,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:18:13,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803861898] [2022-01-18 12:18:13,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:18:13,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:18:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:18:14,123 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:14,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:18:14,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803861898] [2022-01-18 12:18:14,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803861898] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:18:14,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617674846] [2022-01-18 12:18:14,124 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:18:14,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:18:14,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:18:14,125 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:18:14,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-01-18 12:18:14,216 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:18:14,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:18:14,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:18:14,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:18:14,460 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:14,460 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:18:14,793 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:14,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617674846] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:18:14,793 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:18:14,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-01-18 12:18:14,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251463583] [2022-01-18 12:18:14,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:18:14,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 12:18:14,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:18:14,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 12:18:14,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=874, Unknown=0, NotChecked=0, Total=992 [2022-01-18 12:18:14,794 INFO L87 Difference]: Start difference. First operand 37749 states and 109119 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 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) [2022-01-18 12:18:30,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:18:30,426 INFO L93 Difference]: Finished difference Result 49124 states and 140439 transitions. [2022-01-18 12:18:30,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-01-18 12:18:30,426 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 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 85 [2022-01-18 12:18:30,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:18:30,536 INFO L225 Difference]: With dead ends: 49124 [2022-01-18 12:18:30,536 INFO L226 Difference]: Without dead ends: 49052 [2022-01-18 12:18:30,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9222 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=3353, Invalid=22407, Unknown=0, NotChecked=0, Total=25760 [2022-01-18 12:18:30,539 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 1256 mSDsluCounter, 4004 mSDsCounter, 0 mSdLazyCounter, 2241 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 3868 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 2241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:18:30,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1256 Valid, 3868 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 2241 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-18 12:18:30,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49052 states. [2022-01-18 12:18:31,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49052 to 40385. [2022-01-18 12:18:31,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40385 states, 40384 states have (on average 2.8884706814580032) internal successors, (116648), 40384 states have internal predecessors, (116648), 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) [2022-01-18 12:18:31,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40385 states to 40385 states and 116648 transitions. [2022-01-18 12:18:31,638 INFO L78 Accepts]: Start accepts. Automaton has 40385 states and 116648 transitions. Word has length 85 [2022-01-18 12:18:31,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:18:31,638 INFO L470 AbstractCegarLoop]: Abstraction has 40385 states and 116648 transitions. [2022-01-18 12:18:31,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 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) [2022-01-18 12:18:31,638 INFO L276 IsEmpty]: Start isEmpty. Operand 40385 states and 116648 transitions. [2022-01-18 12:18:31,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 12:18:31,699 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:18:31,699 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:18:31,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-01-18 12:18:31,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:18:31,900 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:18:31,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:18:31,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1865527226, now seen corresponding path program 61 times [2022-01-18 12:18:31,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:18:31,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171288580] [2022-01-18 12:18:31,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:18:31,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:18:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:18:32,075 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:32,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:18:32,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171288580] [2022-01-18 12:18:32,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171288580] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:18:32,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918227183] [2022-01-18 12:18:32,075 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:18:32,075 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:18:32,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:18:32,076 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:18:32,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-01-18 12:18:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:18:32,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:18:32,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:18:32,401 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:32,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:18:32,747 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:32,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918227183] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:18:32,748 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:18:32,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-01-18 12:18:32,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924125520] [2022-01-18 12:18:32,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:18:32,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 12:18:32,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:18:32,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 12:18:32,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=936, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 12:18:32,749 INFO L87 Difference]: Start difference. First operand 40385 states and 116648 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:52,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:18:52,139 INFO L93 Difference]: Finished difference Result 53305 states and 152463 transitions. [2022-01-18 12:18:52,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2022-01-18 12:18:52,140 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-18 12:18:52,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:18:52,257 INFO L225 Difference]: With dead ends: 53305 [2022-01-18 12:18:52,257 INFO L226 Difference]: Without dead ends: 53215 [2022-01-18 12:18:52,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16013 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=5318, Invalid=36502, Unknown=0, NotChecked=0, Total=41820 [2022-01-18 12:18:52,259 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 1761 mSDsluCounter, 4369 mSDsCounter, 0 mSdLazyCounter, 2460 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1761 SdHoareTripleChecker+Valid, 4210 SdHoareTripleChecker+Invalid, 2704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 2460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:18:52,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1761 Valid, 4210 Invalid, 2704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 2460 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-18 12:18:52,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53215 states. [2022-01-18 12:18:53,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53215 to 41541. [2022-01-18 12:18:53,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41541 states, 41540 states have (on average 2.887987481945113) internal successors, (119967), 41540 states have internal predecessors, (119967), 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) [2022-01-18 12:18:53,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41541 states to 41541 states and 119967 transitions. [2022-01-18 12:18:53,155 INFO L78 Accepts]: Start accepts. Automaton has 41541 states and 119967 transitions. Word has length 85 [2022-01-18 12:18:53,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:18:53,155 INFO L470 AbstractCegarLoop]: Abstraction has 41541 states and 119967 transitions. [2022-01-18 12:18:53,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:18:53,155 INFO L276 IsEmpty]: Start isEmpty. Operand 41541 states and 119967 transitions. [2022-01-18 12:18:53,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 12:18:53,216 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:18:53,216 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:18:53,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-01-18 12:18:53,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:18:53,427 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:18:53,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:18:53,428 INFO L85 PathProgramCache]: Analyzing trace with hash 2111027964, now seen corresponding path program 62 times [2022-01-18 12:18:53,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:18:53,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091740408] [2022-01-18 12:18:53,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:18:53,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:18:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:18:53,579 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:53,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:18:53,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091740408] [2022-01-18 12:18:53,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091740408] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:18:53,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753065796] [2022-01-18 12:18:53,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:18:53,580 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:18:53,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:18:53,581 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:18:53,592 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-01-18 12:18:53,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:18:53,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:18:53,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:18:53,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:18:53,906 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:53,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:18:54,293 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:18:54,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753065796] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:18:54,294 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:18:54,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 31 [2022-01-18 12:18:54,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586747993] [2022-01-18 12:18:54,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:18:54,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 12:18:54,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:18:54,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 12:18:54,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=831, Unknown=0, NotChecked=0, Total=930 [2022-01-18 12:18:54,295 INFO L87 Difference]: Start difference. First operand 41541 states and 119967 transitions. Second operand has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 states have internal predecessors, (133), 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) [2022-01-18 12:19:05,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:19:05,909 INFO L93 Difference]: Finished difference Result 44680 states and 128452 transitions. [2022-01-18 12:19:05,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-01-18 12:19:05,909 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 states have internal predecessors, (133), 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 85 [2022-01-18 12:19:05,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:19:06,001 INFO L225 Difference]: With dead ends: 44680 [2022-01-18 12:19:06,001 INFO L226 Difference]: Without dead ends: 44572 [2022-01-18 12:19:06,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6583 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=2128, Invalid=16504, Unknown=0, NotChecked=0, Total=18632 [2022-01-18 12:19:06,002 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 854 mSDsluCounter, 3249 mSDsCounter, 0 mSdLazyCounter, 1805 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 3173 SdHoareTripleChecker+Invalid, 1951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-18 12:19:06,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [854 Valid, 3173 Invalid, 1951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1805 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-18 12:19:06,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44572 states. [2022-01-18 12:19:06,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44572 to 41641. [2022-01-18 12:19:06,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41641 states, 41640 states have (on average 2.887367915465898) internal successors, (120230), 41640 states have internal predecessors, (120230), 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) [2022-01-18 12:19:06,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41641 states to 41641 states and 120230 transitions. [2022-01-18 12:19:06,936 INFO L78 Accepts]: Start accepts. Automaton has 41641 states and 120230 transitions. Word has length 85 [2022-01-18 12:19:06,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:19:06,936 INFO L470 AbstractCegarLoop]: Abstraction has 41641 states and 120230 transitions. [2022-01-18 12:19:06,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 states have internal predecessors, (133), 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) [2022-01-18 12:19:06,936 INFO L276 IsEmpty]: Start isEmpty. Operand 41641 states and 120230 transitions. [2022-01-18 12:19:07,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 12:19:07,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:19:07,135 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:19:07,161 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Ended with exit code 0 [2022-01-18 12:19:07,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:19:07,335 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:19:07,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:19:07,335 INFO L85 PathProgramCache]: Analyzing trace with hash -372347426, now seen corresponding path program 63 times [2022-01-18 12:19:07,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:19:07,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423551198] [2022-01-18 12:19:07,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:19:07,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:19:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:19:07,513 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:07,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:19:07,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423551198] [2022-01-18 12:19:07,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423551198] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:19:07,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028680716] [2022-01-18 12:19:07,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:19:07,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:19:07,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:19:07,514 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:19:07,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-01-18 12:19:07,611 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:19:07,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:19:07,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:19:07,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:19:07,909 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:07,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:19:08,248 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:08,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028680716] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:19:08,248 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:19:08,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-01-18 12:19:08,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94247790] [2022-01-18 12:19:08,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:19:08,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 12:19:08,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:19:08,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 12:19:08,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=875, Unknown=0, NotChecked=0, Total=992 [2022-01-18 12:19:08,249 INFO L87 Difference]: Start difference. First operand 41641 states and 120230 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 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) [2022-01-18 12:19:23,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:19:23,099 INFO L93 Difference]: Finished difference Result 49660 states and 142447 transitions. [2022-01-18 12:19:23,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-01-18 12:19:23,100 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 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 85 [2022-01-18 12:19:23,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:19:23,210 INFO L225 Difference]: With dead ends: 49660 [2022-01-18 12:19:23,210 INFO L226 Difference]: Without dead ends: 49540 [2022-01-18 12:19:23,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7130 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=2555, Invalid=18037, Unknown=0, NotChecked=0, Total=20592 [2022-01-18 12:19:23,212 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 1237 mSDsluCounter, 4768 mSDsCounter, 0 mSdLazyCounter, 2569 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 4586 SdHoareTripleChecker+Invalid, 2741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 2569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:19:23,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1237 Valid, 4586 Invalid, 2741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 2569 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-18 12:19:23,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49540 states. [2022-01-18 12:19:24,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49540 to 44153. [2022-01-18 12:19:24,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44153 states, 44152 states have (on average 2.8891556441384307) internal successors, (127562), 44152 states have internal predecessors, (127562), 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) [2022-01-18 12:19:24,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44153 states to 44153 states and 127562 transitions. [2022-01-18 12:19:24,210 INFO L78 Accepts]: Start accepts. Automaton has 44153 states and 127562 transitions. Word has length 85 [2022-01-18 12:19:24,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:19:24,210 INFO L470 AbstractCegarLoop]: Abstraction has 44153 states and 127562 transitions. [2022-01-18 12:19:24,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 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) [2022-01-18 12:19:24,210 INFO L276 IsEmpty]: Start isEmpty. Operand 44153 states and 127562 transitions. [2022-01-18 12:19:24,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 12:19:24,278 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:19:24,278 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:19:24,296 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-01-18 12:19:24,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable73 [2022-01-18 12:19:24,478 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:19:24,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:19:24,479 INFO L85 PathProgramCache]: Analyzing trace with hash -351630040, now seen corresponding path program 64 times [2022-01-18 12:19:24,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:19:24,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89755098] [2022-01-18 12:19:24,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:19:24,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:19:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:19:24,643 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:24,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:19:24,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89755098] [2022-01-18 12:19:24,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89755098] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:19:24,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741638166] [2022-01-18 12:19:24,643 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:19:24,643 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:19:24,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:19:24,644 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:19:24,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-01-18 12:19:24,721 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:19:24,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:19:24,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:19:24,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:19:24,943 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:24,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:19:25,291 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:25,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741638166] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:19:25,291 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:19:25,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-01-18 12:19:25,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242888567] [2022-01-18 12:19:25,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:19:25,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 12:19:25,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:19:25,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 12:19:25,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=937, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 12:19:25,292 INFO L87 Difference]: Start difference. First operand 44153 states and 127562 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:49,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:19:49,984 INFO L93 Difference]: Finished difference Result 53685 states and 153583 transitions. [2022-01-18 12:19:49,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2022-01-18 12:19:49,985 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-18 12:19:49,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:19:50,096 INFO L225 Difference]: With dead ends: 53685 [2022-01-18 12:19:50,097 INFO L226 Difference]: Without dead ends: 53580 [2022-01-18 12:19:50,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 205 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16397 ImplicationChecksByTransitivity, 21.8s TimeCoverageRelationStatistics Valid=5127, Invalid=37515, Unknown=0, NotChecked=0, Total=42642 [2022-01-18 12:19:50,099 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 1849 mSDsluCounter, 5078 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1849 SdHoareTripleChecker+Valid, 4920 SdHoareTripleChecker+Invalid, 2788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-01-18 12:19:50,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1849 Valid, 4920 Invalid, 2788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-01-18 12:19:50,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53580 states. [2022-01-18 12:19:50,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53580 to 43241. [2022-01-18 12:19:50,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43241 states, 43240 states have (on average 2.8871877890841815) internal successors, (124842), 43240 states have internal predecessors, (124842), 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) [2022-01-18 12:19:51,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43241 states to 43241 states and 124842 transitions. [2022-01-18 12:19:51,039 INFO L78 Accepts]: Start accepts. Automaton has 43241 states and 124842 transitions. Word has length 85 [2022-01-18 12:19:51,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:19:51,040 INFO L470 AbstractCegarLoop]: Abstraction has 43241 states and 124842 transitions. [2022-01-18 12:19:51,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:19:51,040 INFO L276 IsEmpty]: Start isEmpty. Operand 43241 states and 124842 transitions. [2022-01-18 12:19:51,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 12:19:51,103 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:19:51,103 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:19:51,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-01-18 12:19:51,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:19:51,307 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:19:51,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:19:51,308 INFO L85 PathProgramCache]: Analyzing trace with hash -749858998, now seen corresponding path program 65 times [2022-01-18 12:19:51,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:19:51,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661952934] [2022-01-18 12:19:51,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:19:51,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:19:51,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:19:51,488 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:51,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:19:51,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661952934] [2022-01-18 12:19:51,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661952934] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:19:51,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144148576] [2022-01-18 12:19:51,489 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:19:51,489 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:19:51,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:19:51,490 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:19:51,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-01-18 12:19:51,588 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 12:19:51,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:19:51,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:19:51,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:19:51,815 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:51,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:19:52,175 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:19:52,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144148576] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:19:52,175 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:19:52,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-01-18 12:19:52,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442361424] [2022-01-18 12:19:52,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:19:52,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 12:19:52,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:19:52,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 12:19:52,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 12:19:52,176 INFO L87 Difference]: Start difference. First operand 43241 states and 124842 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:18,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:20:18,477 INFO L93 Difference]: Finished difference Result 53446 states and 152839 transitions. [2022-01-18 12:20:18,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 227 states. [2022-01-18 12:20:18,477 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-18 12:20:18,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:20:18,647 INFO L225 Difference]: With dead ends: 53446 [2022-01-18 12:20:18,647 INFO L226 Difference]: Without dead ends: 53191 [2022-01-18 12:20:18,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23523 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=6453, Invalid=51869, Unknown=0, NotChecked=0, Total=58322 [2022-01-18 12:20:18,649 INFO L933 BasicCegarLoop]: 212 mSDtfsCounter, 1920 mSDsluCounter, 4669 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1920 SdHoareTripleChecker+Valid, 4531 SdHoareTripleChecker+Invalid, 2876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 12:20:18,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1920 Valid, 4531 Invalid, 2876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-18 12:20:18,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53191 states. [2022-01-18 12:20:19,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53191 to 43337. [2022-01-18 12:20:19,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43337 states, 43336 states have (on average 2.885776259922466) internal successors, (125058), 43336 states have internal predecessors, (125058), 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) [2022-01-18 12:20:19,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43337 states to 43337 states and 125058 transitions. [2022-01-18 12:20:19,582 INFO L78 Accepts]: Start accepts. Automaton has 43337 states and 125058 transitions. Word has length 85 [2022-01-18 12:20:19,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:20:19,582 INFO L470 AbstractCegarLoop]: Abstraction has 43337 states and 125058 transitions. [2022-01-18 12:20:19,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:20:19,583 INFO L276 IsEmpty]: Start isEmpty. Operand 43337 states and 125058 transitions. [2022-01-18 12:20:19,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 12:20:19,648 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:20:19,648 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:20:19,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-01-18 12:20:19,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable75 [2022-01-18 12:20:19,849 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:20:19,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:20:19,849 INFO L85 PathProgramCache]: Analyzing trace with hash 2137853248, now seen corresponding path program 66 times [2022-01-18 12:20:19,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:20:19,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380636073] [2022-01-18 12:20:19,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:20:19,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:20:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:20:20,010 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:20,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:20:20,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380636073] [2022-01-18 12:20:20,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380636073] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:20:20,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073380319] [2022-01-18 12:20:20,011 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:20:20,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:20:20,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:20:20,012 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:20:20,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-01-18 12:20:20,109 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:20:20,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:20:20,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:20:20,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:20:20,335 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:20,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:20:20,666 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:20,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073380319] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:20:20,666 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:20:20,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-01-18 12:20:20,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011798823] [2022-01-18 12:20:20,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:20:20,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 12:20:20,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:20:20,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 12:20:20,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=876, Unknown=0, NotChecked=0, Total=992 [2022-01-18 12:20:20,676 INFO L87 Difference]: Start difference. First operand 43337 states and 125058 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 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) [2022-01-18 12:20:40,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:20:40,111 INFO L93 Difference]: Finished difference Result 50227 states and 143883 transitions. [2022-01-18 12:20:40,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 151 states. [2022-01-18 12:20:40,112 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 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 85 [2022-01-18 12:20:40,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:20:40,226 INFO L225 Difference]: With dead ends: 50227 [2022-01-18 12:20:40,226 INFO L226 Difference]: Without dead ends: 50155 [2022-01-18 12:20:40,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9855 ImplicationChecksByTransitivity, 16.8s TimeCoverageRelationStatistics Valid=3346, Invalid=23714, Unknown=0, NotChecked=0, Total=27060 [2022-01-18 12:20:40,228 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 1312 mSDsluCounter, 3760 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 3649 SdHoareTripleChecker+Invalid, 2424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:20:40,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1312 Valid, 3649 Invalid, 2424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 2238 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-18 12:20:40,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50155 states. [2022-01-18 12:20:41,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50155 to 44785. [2022-01-18 12:20:41,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44785 states, 44784 states have (on average 2.8848695962843873) internal successors, (129196), 44784 states have internal predecessors, (129196), 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) [2022-01-18 12:20:41,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44785 states to 44785 states and 129196 transitions. [2022-01-18 12:20:41,215 INFO L78 Accepts]: Start accepts. Automaton has 44785 states and 129196 transitions. Word has length 85 [2022-01-18 12:20:41,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:20:41,215 INFO L470 AbstractCegarLoop]: Abstraction has 44785 states and 129196 transitions. [2022-01-18 12:20:41,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 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) [2022-01-18 12:20:41,216 INFO L276 IsEmpty]: Start isEmpty. Operand 44785 states and 129196 transitions. [2022-01-18 12:20:41,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 12:20:41,434 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:20:41,434 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:20:41,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Ended with exit code 0 [2022-01-18 12:20:41,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable76 [2022-01-18 12:20:41,659 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:20:41,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:20:41,660 INFO L85 PathProgramCache]: Analyzing trace with hash -2136396662, now seen corresponding path program 67 times [2022-01-18 12:20:41,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:20:41,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101644479] [2022-01-18 12:20:41,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:20:41,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:20:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:20:41,828 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:41,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:20:41,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101644479] [2022-01-18 12:20:41,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101644479] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:20:41,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404807704] [2022-01-18 12:20:41,830 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:20:41,830 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:20:41,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:20:41,831 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:20:41,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-01-18 12:20:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:20:41,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:20:41,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:20:42,144 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:42,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:20:42,586 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:20:42,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404807704] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:20:42,586 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:20:42,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-01-18 12:20:42,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494797437] [2022-01-18 12:20:42,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:20:42,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 12:20:42,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:20:42,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 12:20:42,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=938, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 12:20:42,587 INFO L87 Difference]: Start difference. First operand 44785 states and 129196 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:15,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:15,919 INFO L93 Difference]: Finished difference Result 56654 states and 162214 transitions. [2022-01-18 12:21:15,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 219 states. [2022-01-18 12:21:15,920 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-18 12:21:15,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:16,038 INFO L225 Difference]: With dead ends: 56654 [2022-01-18 12:21:16,038 INFO L226 Difference]: Without dead ends: 56564 [2022-01-18 12:21:16,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21248 ImplicationChecksByTransitivity, 30.3s TimeCoverageRelationStatistics Valid=6131, Invalid=47461, Unknown=0, NotChecked=0, Total=53592 [2022-01-18 12:21:16,040 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 1829 mSDsluCounter, 4495 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 4348 SdHoareTripleChecker+Invalid, 2722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:16,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1829 Valid, 4348 Invalid, 2722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-18 12:21:16,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56564 states. [2022-01-18 12:21:16,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56564 to 46285. [2022-01-18 12:21:16,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46285 states, 46284 states have (on average 2.88386915564774) internal successors, (133477), 46284 states have internal predecessors, (133477), 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) [2022-01-18 12:21:17,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46285 states to 46285 states and 133477 transitions. [2022-01-18 12:21:17,064 INFO L78 Accepts]: Start accepts. Automaton has 46285 states and 133477 transitions. Word has length 85 [2022-01-18 12:21:17,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:17,064 INFO L470 AbstractCegarLoop]: Abstraction has 46285 states and 133477 transitions. [2022-01-18 12:21:17,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:21:17,064 INFO L276 IsEmpty]: Start isEmpty. Operand 46285 states and 133477 transitions. [2022-01-18 12:21:17,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 12:21:17,133 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:17,133 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:17,149 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-01-18 12:21:17,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2022-01-18 12:21:17,334 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:17,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:17,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1840158528, now seen corresponding path program 68 times [2022-01-18 12:21:17,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:17,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536727271] [2022-01-18 12:21:17,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:17,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:17,666 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:17,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:17,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536727271] [2022-01-18 12:21:17,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536727271] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:17,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377258677] [2022-01-18 12:21:17,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:21:17,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:17,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:17,668 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:17,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-01-18 12:21:17,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:21:17,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:21:17,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:21:17,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:18,066 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:18,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:18,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377258677] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:18,475 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:18,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 31 [2022-01-18 12:21:18,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028870832] [2022-01-18 12:21:18,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:18,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 12:21:18,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:18,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 12:21:18,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=833, Unknown=0, NotChecked=0, Total=930 [2022-01-18 12:21:18,476 INFO L87 Difference]: Start difference. First operand 46285 states and 133477 transitions. Second operand has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 states have internal predecessors, (133), 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) [2022-01-18 12:21:37,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:37,823 INFO L93 Difference]: Finished difference Result 48661 states and 139878 transitions. [2022-01-18 12:21:37,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-01-18 12:21:37,823 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 states have internal predecessors, (133), 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 85 [2022-01-18 12:21:37,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:37,918 INFO L225 Difference]: With dead ends: 48661 [2022-01-18 12:21:37,918 INFO L226 Difference]: Without dead ends: 48553 [2022-01-18 12:21:37,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8543 ImplicationChecksByTransitivity, 16.5s TimeCoverageRelationStatistics Valid=2558, Invalid=20698, Unknown=0, NotChecked=0, Total=23256 [2022-01-18 12:21:37,919 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 862 mSDsluCounter, 3403 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 3347 SdHoareTripleChecker+Invalid, 2108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:37,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [862 Valid, 3347 Invalid, 2108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1928 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-18 12:21:37,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48553 states. [2022-01-18 12:21:38,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48553 to 46373. [2022-01-18 12:21:38,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46373 states, 46372 states have (on average 2.883442594669197) internal successors, (133711), 46372 states have internal predecessors, (133711), 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) [2022-01-18 12:21:38,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46373 states to 46373 states and 133711 transitions. [2022-01-18 12:21:38,994 INFO L78 Accepts]: Start accepts. Automaton has 46373 states and 133711 transitions. Word has length 85 [2022-01-18 12:21:38,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:38,994 INFO L470 AbstractCegarLoop]: Abstraction has 46373 states and 133711 transitions. [2022-01-18 12:21:38,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 states have internal predecessors, (133), 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) [2022-01-18 12:21:38,994 INFO L276 IsEmpty]: Start isEmpty. Operand 46373 states and 133711 transitions. [2022-01-18 12:21:39,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 12:21:39,076 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:39,076 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:39,105 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-01-18 12:21:39,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2022-01-18 12:21:39,295 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:39,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:39,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1642898954, now seen corresponding path program 69 times [2022-01-18 12:21:39,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:39,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214791526] [2022-01-18 12:21:39,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:39,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:39,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:39,470 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:39,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:39,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214791526] [2022-01-18 12:21:39,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214791526] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:39,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57195172] [2022-01-18 12:21:39,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:21:39,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:39,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:39,472 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:39,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-01-18 12:21:39,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:21:39,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:21:39,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:21:39,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:39,804 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:39,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:40,141 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:40,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57195172] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:40,142 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:40,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-01-18 12:21:40,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763223167] [2022-01-18 12:21:40,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:40,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 12:21:40,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:40,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 12:21:40,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=867, Unknown=0, NotChecked=0, Total=992 [2022-01-18 12:21:40,143 INFO L87 Difference]: Start difference. First operand 46373 states and 133711 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 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) [2022-01-18 12:21:54,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:21:54,416 INFO L93 Difference]: Finished difference Result 57743 states and 165651 transitions. [2022-01-18 12:21:54,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2022-01-18 12:21:54,417 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 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 85 [2022-01-18 12:21:54,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:21:54,541 INFO L225 Difference]: With dead ends: 57743 [2022-01-18 12:21:54,541 INFO L226 Difference]: Without dead ends: 57671 [2022-01-18 12:21:54,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7360 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=2873, Invalid=18007, Unknown=0, NotChecked=0, Total=20880 [2022-01-18 12:21:54,543 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 1303 mSDsluCounter, 4003 mSDsCounter, 0 mSdLazyCounter, 2223 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 3884 SdHoareTripleChecker+Invalid, 2364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 2223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:21:54,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1303 Valid, 3884 Invalid, 2364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 2223 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-18 12:21:54,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57671 states. [2022-01-18 12:21:55,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57671 to 49169. [2022-01-18 12:21:55,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49169 states, 49168 states have (on average 2.884396355353075) internal successors, (141820), 49168 states have internal predecessors, (141820), 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) [2022-01-18 12:21:55,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49169 states to 49169 states and 141820 transitions. [2022-01-18 12:21:55,643 INFO L78 Accepts]: Start accepts. Automaton has 49169 states and 141820 transitions. Word has length 85 [2022-01-18 12:21:55,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:21:55,643 INFO L470 AbstractCegarLoop]: Abstraction has 49169 states and 141820 transitions. [2022-01-18 12:21:55,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 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) [2022-01-18 12:21:55,643 INFO L276 IsEmpty]: Start isEmpty. Operand 49169 states and 141820 transitions. [2022-01-18 12:21:55,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 12:21:55,716 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:21:55,716 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:21:55,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Ended with exit code 0 [2022-01-18 12:21:55,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:55,917 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:21:55,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:21:55,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1663616340, now seen corresponding path program 70 times [2022-01-18 12:21:55,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:21:55,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072809318] [2022-01-18 12:21:55,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:21:55,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:21:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:21:56,090 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:56,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:21:56,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072809318] [2022-01-18 12:21:56,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072809318] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:21:56,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540367557] [2022-01-18 12:21:56,090 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:21:56,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:21:56,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:21:56,091 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:21:56,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-01-18 12:21:56,171 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:21:56,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:21:56,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:21:56,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:21:56,396 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:56,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:21:56,747 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:21:56,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540367557] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:21:56,748 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:21:56,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-01-18 12:21:56,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648589360] [2022-01-18 12:21:56,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:21:56,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 12:21:56,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:21:56,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 12:21:56,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=929, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 12:21:56,749 INFO L87 Difference]: Start difference. First operand 49169 states and 141820 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:18,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:18,355 INFO L93 Difference]: Finished difference Result 59715 states and 170993 transitions. [2022-01-18 12:22:18,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2022-01-18 12:22:18,355 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-18 12:22:18,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:18,497 INFO L225 Difference]: With dead ends: 59715 [2022-01-18 12:22:18,497 INFO L226 Difference]: Without dead ends: 59655 [2022-01-18 12:22:18,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12341 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=4300, Invalid=28642, Unknown=0, NotChecked=0, Total=32942 [2022-01-18 12:22:18,499 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 1858 mSDsluCounter, 3884 mSDsCounter, 0 mSdLazyCounter, 2159 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1858 SdHoareTripleChecker+Valid, 3787 SdHoareTripleChecker+Invalid, 2374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 2159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:18,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1858 Valid, 3787 Invalid, 2374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 2159 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-18 12:22:18,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59655 states. [2022-01-18 12:22:19,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59655 to 47205. [2022-01-18 12:22:19,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47205 states, 47204 states have (on average 2.881853232776883) internal successors, (136035), 47204 states have internal predecessors, (136035), 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) [2022-01-18 12:22:19,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47205 states to 47205 states and 136035 transitions. [2022-01-18 12:22:19,579 INFO L78 Accepts]: Start accepts. Automaton has 47205 states and 136035 transitions. Word has length 85 [2022-01-18 12:22:19,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:19,579 INFO L470 AbstractCegarLoop]: Abstraction has 47205 states and 136035 transitions. [2022-01-18 12:22:19,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:22:19,579 INFO L276 IsEmpty]: Start isEmpty. Operand 47205 states and 136035 transitions. [2022-01-18 12:22:19,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 12:22:19,649 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:19,649 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:19,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-01-18 12:22:19,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:19,851 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:19,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:19,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1345204234, now seen corresponding path program 71 times [2022-01-18 12:22:19,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:19,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402150448] [2022-01-18 12:22:19,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:19,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:20,004 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:20,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:20,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402150448] [2022-01-18 12:22:20,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402150448] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:20,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520479152] [2022-01-18 12:22:20,004 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:22:20,004 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:20,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:20,005 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:20,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-01-18 12:22:20,251 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 12:22:20,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:22:20,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:22:20,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:20,494 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:20,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:20,969 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:20,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520479152] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:20,970 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:20,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 31 [2022-01-18 12:22:20,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764985566] [2022-01-18 12:22:20,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:20,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-18 12:22:20,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:20,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-18 12:22:20,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=826, Unknown=0, NotChecked=0, Total=930 [2022-01-18 12:22:20,971 INFO L87 Difference]: Start difference. First operand 47205 states and 136035 transitions. Second operand has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 states have internal predecessors, (133), 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) [2022-01-18 12:22:35,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:35,274 INFO L93 Difference]: Finished difference Result 49683 states and 142554 transitions. [2022-01-18 12:22:35,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-01-18 12:22:35,274 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 states have internal predecessors, (133), 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 85 [2022-01-18 12:22:35,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:35,378 INFO L225 Difference]: With dead ends: 49683 [2022-01-18 12:22:35,378 INFO L226 Difference]: Without dead ends: 49575 [2022-01-18 12:22:35,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5611 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=1961, Invalid=14295, Unknown=0, NotChecked=0, Total=16256 [2022-01-18 12:22:35,379 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 1113 mSDsluCounter, 3162 mSDsCounter, 0 mSdLazyCounter, 1806 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 3126 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:35,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1113 Valid, 3126 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1806 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-18 12:22:35,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49575 states. [2022-01-18 12:22:36,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49575 to 47301. [2022-01-18 12:22:36,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47301 states, 47300 states have (on average 2.8823467230443973) internal successors, (136335), 47300 states have internal predecessors, (136335), 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) [2022-01-18 12:22:36,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47301 states to 47301 states and 136335 transitions. [2022-01-18 12:22:36,409 INFO L78 Accepts]: Start accepts. Automaton has 47301 states and 136335 transitions. Word has length 85 [2022-01-18 12:22:36,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:36,409 INFO L470 AbstractCegarLoop]: Abstraction has 47301 states and 136335 transitions. [2022-01-18 12:22:36,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.290322580645161) internal successors, (133), 31 states have internal predecessors, (133), 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) [2022-01-18 12:22:36,409 INFO L276 IsEmpty]: Start isEmpty. Operand 47301 states and 136335 transitions. [2022-01-18 12:22:36,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 12:22:36,480 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:36,480 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:36,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-01-18 12:22:36,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:36,681 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:36,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:36,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1578644024, now seen corresponding path program 72 times [2022-01-18 12:22:36,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:36,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48367696] [2022-01-18 12:22:36,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:36,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:36,956 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:36,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:36,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48367696] [2022-01-18 12:22:36,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48367696] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:36,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617577132] [2022-01-18 12:22:36,956 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:22:36,956 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:36,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:36,957 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:36,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-01-18 12:22:37,088 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 12:22:37,089 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:22:37,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:22:37,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:37,325 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:37,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:37,703 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:37,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617577132] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:37,704 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:37,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 30 [2022-01-18 12:22:37,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753592805] [2022-01-18 12:22:37,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:37,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 12:22:37,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:37,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 12:22:37,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=772, Unknown=0, NotChecked=0, Total=870 [2022-01-18 12:22:37,705 INFO L87 Difference]: Start difference. First operand 47301 states and 136335 transitions. Second operand has 30 states, 30 states have (on average 4.4) internal successors, (132), 30 states have internal predecessors, (132), 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) [2022-01-18 12:22:42,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:42,038 INFO L93 Difference]: Finished difference Result 48441 states and 139317 transitions. [2022-01-18 12:22:42,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 12:22:42,039 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 4.4) internal successors, (132), 30 states have internal predecessors, (132), 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 85 [2022-01-18 12:22:42,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:42,153 INFO L225 Difference]: With dead ends: 48441 [2022-01-18 12:22:42,153 INFO L226 Difference]: Without dead ends: 48321 [2022-01-18 12:22:42,154 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 153 SyntacticMatches, 2 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1724 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=809, Invalid=5197, Unknown=0, NotChecked=0, Total=6006 [2022-01-18 12:22:42,154 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 620 mSDsluCounter, 2926 mSDsCounter, 0 mSdLazyCounter, 1489 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 2885 SdHoareTripleChecker+Invalid, 1570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:42,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [620 Valid, 2885 Invalid, 1570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1489 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 12:22:42,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48321 states. [2022-01-18 12:22:43,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48321 to 47357. [2022-01-18 12:22:43,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47357 states, 47356 states have (on average 2.8817678858011657) internal successors, (136469), 47356 states have internal predecessors, (136469), 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) [2022-01-18 12:22:43,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47357 states to 47357 states and 136469 transitions. [2022-01-18 12:22:43,251 INFO L78 Accepts]: Start accepts. Automaton has 47357 states and 136469 transitions. Word has length 85 [2022-01-18 12:22:43,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:43,251 INFO L470 AbstractCegarLoop]: Abstraction has 47357 states and 136469 transitions. [2022-01-18 12:22:43,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 4.4) internal successors, (132), 30 states have internal predecessors, (132), 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) [2022-01-18 12:22:43,251 INFO L276 IsEmpty]: Start isEmpty. Operand 47357 states and 136469 transitions. [2022-01-18 12:22:43,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 12:22:43,332 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:43,332 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:43,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Forceful destruction successful, exit code 0 [2022-01-18 12:22:43,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable82 [2022-01-18 12:22:43,532 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:43,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:43,533 INFO L85 PathProgramCache]: Analyzing trace with hash 779253390, now seen corresponding path program 73 times [2022-01-18 12:22:43,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:43,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345659523] [2022-01-18 12:22:43,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:43,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:43,844 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:43,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:43,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345659523] [2022-01-18 12:22:43,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345659523] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:43,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264778362] [2022-01-18 12:22:43,844 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:22:43,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:43,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:43,851 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:43,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-01-18 12:22:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:43,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:22:43,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:22:44,140 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:44,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:22:44,433 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:44,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [264778362] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:22:44,433 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:22:44,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-01-18 12:22:44,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285663980] [2022-01-18 12:22:44,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:22:44,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 12:22:44,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:22:44,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 12:22:44,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=869, Unknown=0, NotChecked=0, Total=992 [2022-01-18 12:22:44,434 INFO L87 Difference]: Start difference. First operand 47357 states and 136469 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 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) [2022-01-18 12:22:57,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:22:57,979 INFO L93 Difference]: Finished difference Result 58460 states and 167228 transitions. [2022-01-18 12:22:57,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2022-01-18 12:22:57,980 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 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 85 [2022-01-18 12:22:57,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:22:58,092 INFO L225 Difference]: With dead ends: 58460 [2022-01-18 12:22:58,092 INFO L226 Difference]: Without dead ends: 58388 [2022-01-18 12:22:58,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9118 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=3033, Invalid=21459, Unknown=0, NotChecked=0, Total=24492 [2022-01-18 12:22:58,093 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 1369 mSDsluCounter, 3629 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1369 SdHoareTripleChecker+Valid, 3531 SdHoareTripleChecker+Invalid, 2049 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:22:58,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1369 Valid, 3531 Invalid, 2049 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1890 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-18 12:22:58,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58388 states. [2022-01-18 12:22:59,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58388 to 50273. [2022-01-18 12:22:59,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50273 states, 50272 states have (on average 2.88375238701464) internal successors, (144972), 50272 states have internal predecessors, (144972), 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) [2022-01-18 12:22:59,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50273 states to 50273 states and 144972 transitions. [2022-01-18 12:22:59,244 INFO L78 Accepts]: Start accepts. Automaton has 50273 states and 144972 transitions. Word has length 85 [2022-01-18 12:22:59,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:22:59,244 INFO L470 AbstractCegarLoop]: Abstraction has 50273 states and 144972 transitions. [2022-01-18 12:22:59,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 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) [2022-01-18 12:22:59,244 INFO L276 IsEmpty]: Start isEmpty. Operand 50273 states and 144972 transitions. [2022-01-18 12:22:59,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 12:22:59,329 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:22:59,329 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:22:59,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Ended with exit code 0 [2022-01-18 12:22:59,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:59,530 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:22:59,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:22:59,530 INFO L85 PathProgramCache]: Analyzing trace with hash 799970776, now seen corresponding path program 74 times [2022-01-18 12:22:59,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:22:59,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129255570] [2022-01-18 12:22:59,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:22:59,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:22:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:22:59,698 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:22:59,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:22:59,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129255570] [2022-01-18 12:22:59,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129255570] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:22:59,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227553429] [2022-01-18 12:22:59,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:22:59,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:22:59,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:22:59,699 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:22:59,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-01-18 12:22:59,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:22:59,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:22:59,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:22:59,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:23:00,157 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:00,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:23:00,476 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:00,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227553429] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:23:00,476 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:23:00,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-01-18 12:23:00,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108626169] [2022-01-18 12:23:00,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:23:00,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 12:23:00,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:23:00,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 12:23:00,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=931, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 12:23:00,477 INFO L87 Difference]: Start difference. First operand 50273 states and 144972 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:04,828 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:23:31,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:23:31,516 INFO L93 Difference]: Finished difference Result 62579 states and 178599 transitions. [2022-01-18 12:23:31,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2022-01-18 12:23:31,517 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-18 12:23:31,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:23:31,657 INFO L225 Difference]: With dead ends: 62579 [2022-01-18 12:23:31,657 INFO L226 Difference]: Without dead ends: 62489 [2022-01-18 12:23:31,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17393 ImplicationChecksByTransitivity, 26.0s TimeCoverageRelationStatistics Valid=5308, Invalid=38164, Unknown=0, NotChecked=0, Total=43472 [2022-01-18 12:23:31,659 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 1811 mSDsluCounter, 4696 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 215 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1811 SdHoareTripleChecker+Valid, 4557 SdHoareTripleChecker+Invalid, 2628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-01-18 12:23:31,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1811 Valid, 4557 Invalid, 2628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 2412 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-01-18 12:23:31,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62489 states. [2022-01-18 12:23:32,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62489 to 50541. [2022-01-18 12:23:32,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50541 states, 50540 states have (on average 2.883359715077167) internal successors, (145725), 50540 states have internal predecessors, (145725), 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) [2022-01-18 12:23:32,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50541 states to 50541 states and 145725 transitions. [2022-01-18 12:23:32,945 INFO L78 Accepts]: Start accepts. Automaton has 50541 states and 145725 transitions. Word has length 85 [2022-01-18 12:23:32,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:23:32,945 INFO L470 AbstractCegarLoop]: Abstraction has 50541 states and 145725 transitions. [2022-01-18 12:23:32,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:32,945 INFO L276 IsEmpty]: Start isEmpty. Operand 50541 states and 145725 transitions. [2022-01-18 12:23:33,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 12:23:33,030 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:23:33,030 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:23:33,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-01-18 12:23:33,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:33,239 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:23:33,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:23:33,240 INFO L85 PathProgramCache]: Analyzing trace with hash 401741818, now seen corresponding path program 75 times [2022-01-18 12:23:33,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:23:33,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996387219] [2022-01-18 12:23:33,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:23:33,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:23:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:33,515 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:33,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:23:33,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996387219] [2022-01-18 12:23:33,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996387219] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:23:33,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160251765] [2022-01-18 12:23:33,516 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:23:33,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:33,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:23:33,517 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:23:33,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-01-18 12:23:33,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 12:23:33,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:23:33,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:23:33,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:23:33,826 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:33,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:23:34,163 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:34,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160251765] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:23:34,163 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:23:34,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-01-18 12:23:34,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301113493] [2022-01-18 12:23:34,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:23:34,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 12:23:34,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:23:34,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 12:23:34,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=945, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 12:23:34,164 INFO L87 Difference]: Start difference. First operand 50541 states and 145725 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:55,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:23:55,080 INFO L93 Difference]: Finished difference Result 64660 states and 185170 transitions. [2022-01-18 12:23:55,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2022-01-18 12:23:55,081 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-18 12:23:55,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:23:55,300 INFO L225 Difference]: With dead ends: 64660 [2022-01-18 12:23:55,300 INFO L226 Difference]: Without dead ends: 64555 [2022-01-18 12:23:55,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 269 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30396 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=7074, Invalid=66096, Unknown=0, NotChecked=0, Total=73170 [2022-01-18 12:23:55,302 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 1768 mSDsluCounter, 4556 mSDsCounter, 0 mSdLazyCounter, 2459 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1768 SdHoareTripleChecker+Valid, 4417 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 2459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-18 12:23:55,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1768 Valid, 4417 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 2459 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-01-18 12:23:55,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64555 states. [2022-01-18 12:23:56,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64555 to 53437. [2022-01-18 12:23:56,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53437 states, 53436 states have (on average 2.8871360131746386) internal successors, (154277), 53436 states have internal predecessors, (154277), 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) [2022-01-18 12:23:56,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53437 states to 53437 states and 154277 transitions. [2022-01-18 12:23:56,595 INFO L78 Accepts]: Start accepts. Automaton has 53437 states and 154277 transitions. Word has length 85 [2022-01-18 12:23:56,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:23:56,595 INFO L470 AbstractCegarLoop]: Abstraction has 53437 states and 154277 transitions. [2022-01-18 12:23:56,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:23:56,595 INFO L276 IsEmpty]: Start isEmpty. Operand 53437 states and 154277 transitions. [2022-01-18 12:23:56,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 12:23:56,693 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:23:56,693 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:23:56,709 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-01-18 12:23:56,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable85 [2022-01-18 12:23:56,894 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:23:56,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:23:56,894 INFO L85 PathProgramCache]: Analyzing trace with hash 951304790, now seen corresponding path program 76 times [2022-01-18 12:23:56,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:23:56,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108464326] [2022-01-18 12:23:56,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:23:56,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:23:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:23:57,052 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:57,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:23:57,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108464326] [2022-01-18 12:23:57,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108464326] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:23:57,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807078850] [2022-01-18 12:23:57,052 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:23:57,052 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:23:57,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:23:57,053 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:23:57,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-01-18 12:23:57,136 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:23:57,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:23:57,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:23:57,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:23:57,355 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:57,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:23:57,704 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:23:57,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807078850] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:23:57,705 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:23:57,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-01-18 12:23:57,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029582314] [2022-01-18 12:23:57,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:23:57,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 12:23:57,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:23:57,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 12:23:57,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=950, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 12:23:57,706 INFO L87 Difference]: Start difference. First operand 53437 states and 154277 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:24:21,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:24:21,304 INFO L93 Difference]: Finished difference Result 81895 states and 234703 transitions. [2022-01-18 12:24:21,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 322 states. [2022-01-18 12:24:21,305 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-18 12:24:21,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:24:21,507 INFO L225 Difference]: With dead ends: 81895 [2022-01-18 12:24:21,507 INFO L226 Difference]: Without dead ends: 81265 [2022-01-18 12:24:21,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 337 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49445 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=10013, Invalid=104569, Unknown=0, NotChecked=0, Total=114582 [2022-01-18 12:24:21,510 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 2055 mSDsluCounter, 6317 mSDsCounter, 0 mSdLazyCounter, 3638 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2055 SdHoareTripleChecker+Valid, 5969 SdHoareTripleChecker+Invalid, 3862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 3638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:24:21,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2055 Valid, 5969 Invalid, 3862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 3638 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-18 12:24:21,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81265 states. [2022-01-18 12:24:23,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81265 to 59451. [2022-01-18 12:24:23,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59451 states, 59450 states have (on average 2.892010092514718) internal successors, (171930), 59450 states have internal predecessors, (171930), 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) [2022-01-18 12:24:23,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59451 states to 59451 states and 171930 transitions. [2022-01-18 12:24:23,406 INFO L78 Accepts]: Start accepts. Automaton has 59451 states and 171930 transitions. Word has length 85 [2022-01-18 12:24:23,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:24:23,406 INFO L470 AbstractCegarLoop]: Abstraction has 59451 states and 171930 transitions. [2022-01-18 12:24:23,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:24:23,406 INFO L276 IsEmpty]: Start isEmpty. Operand 59451 states and 171930 transitions. [2022-01-18 12:24:23,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 12:24:23,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:24:23,507 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:24:23,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-01-18 12:24:23,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2022-01-18 12:24:23,708 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:24:23,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:24:23,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1304018864, now seen corresponding path program 77 times [2022-01-18 12:24:23,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:24:23,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901757806] [2022-01-18 12:24:23,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:24:23,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:24:23,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:24:23,841 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:24:23,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:24:23,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901757806] [2022-01-18 12:24:23,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901757806] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:24:23,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038113822] [2022-01-18 12:24:23,841 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:24:23,841 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:24:23,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:24:23,842 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:24:23,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-01-18 12:24:23,940 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 12:24:23,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:24:23,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:24:23,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:24:24,168 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:24:24,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:24:24,479 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:24:24,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038113822] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:24:24,480 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:24:24,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 28 [2022-01-18 12:24:24,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100516603] [2022-01-18 12:24:24,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:24:24,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 12:24:24,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:24:24,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 12:24:24,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2022-01-18 12:24:24,481 INFO L87 Difference]: Start difference. First operand 59451 states and 171930 transitions. Second operand has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 28 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:24:39,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:24:39,629 INFO L93 Difference]: Finished difference Result 86420 states and 248898 transitions. [2022-01-18 12:24:39,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2022-01-18 12:24:39,629 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 28 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-18 12:24:39,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:24:39,834 INFO L225 Difference]: With dead ends: 86420 [2022-01-18 12:24:39,834 INFO L226 Difference]: Without dead ends: 85835 [2022-01-18 12:24:39,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19001 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=4885, Invalid=44177, Unknown=0, NotChecked=0, Total=49062 [2022-01-18 12:24:39,837 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 1233 mSDsluCounter, 5048 mSDsCounter, 0 mSdLazyCounter, 2961 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1233 SdHoareTripleChecker+Valid, 4829 SdHoareTripleChecker+Invalid, 3125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 2961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:24:39,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1233 Valid, 4829 Invalid, 3125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 2961 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-18 12:24:39,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85835 states. [2022-01-18 12:24:41,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85835 to 63701. [2022-01-18 12:24:41,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63701 states, 63700 states have (on average 2.886860282574568) internal successors, (183893), 63700 states have internal predecessors, (183893), 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) [2022-01-18 12:24:41,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63701 states to 63701 states and 183893 transitions. [2022-01-18 12:24:41,711 INFO L78 Accepts]: Start accepts. Automaton has 63701 states and 183893 transitions. Word has length 85 [2022-01-18 12:24:41,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:24:41,711 INFO L470 AbstractCegarLoop]: Abstraction has 63701 states and 183893 transitions. [2022-01-18 12:24:41,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 28 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:24:41,711 INFO L276 IsEmpty]: Start isEmpty. Operand 63701 states and 183893 transitions. [2022-01-18 12:24:41,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 12:24:41,820 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:24:41,820 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:24:41,836 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-01-18 12:24:42,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:24:42,021 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:24:42,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:24:42,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1322894808, now seen corresponding path program 78 times [2022-01-18 12:24:42,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:24:42,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892371428] [2022-01-18 12:24:42,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:24:42,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:24:42,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:24:42,346 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:24:42,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:24:42,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892371428] [2022-01-18 12:24:42,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892371428] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:24:42,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168303352] [2022-01-18 12:24:42,346 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:24:42,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:24:42,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:24:42,347 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:24:42,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-01-18 12:24:42,441 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 12:24:42,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:24:42,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:24:42,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:24:42,659 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:24:42,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:24:43,000 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:24:43,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168303352] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:24:43,000 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:24:43,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-01-18 12:24:43,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205208505] [2022-01-18 12:24:43,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:24:43,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 12:24:43,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:24:43,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 12:24:43,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=950, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 12:24:43,001 INFO L87 Difference]: Start difference. First operand 63701 states and 183893 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:25:06,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:25:06,983 INFO L93 Difference]: Finished difference Result 81730 states and 233249 transitions. [2022-01-18 12:25:06,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 289 states. [2022-01-18 12:25:06,983 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-18 12:25:06,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:25:07,195 INFO L225 Difference]: With dead ends: 81730 [2022-01-18 12:25:07,195 INFO L226 Difference]: Without dead ends: 81385 [2022-01-18 12:25:07,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 301 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38668 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=8931, Invalid=82575, Unknown=0, NotChecked=0, Total=91506 [2022-01-18 12:25:07,199 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 1978 mSDsluCounter, 4262 mSDsCounter, 0 mSdLazyCounter, 2219 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1978 SdHoareTripleChecker+Valid, 4116 SdHoareTripleChecker+Invalid, 2508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 2219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:25:07,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1978 Valid, 4116 Invalid, 2508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 2219 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-18 12:25:07,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81385 states. [2022-01-18 12:25:08,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81385 to 67517. [2022-01-18 12:25:08,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67517 states, 67516 states have (on average 2.888248711416553) internal successors, (195003), 67516 states have internal predecessors, (195003), 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) [2022-01-18 12:25:09,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67517 states to 67517 states and 195003 transitions. [2022-01-18 12:25:09,066 INFO L78 Accepts]: Start accepts. Automaton has 67517 states and 195003 transitions. Word has length 85 [2022-01-18 12:25:09,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:25:09,066 INFO L470 AbstractCegarLoop]: Abstraction has 67517 states and 195003 transitions. [2022-01-18 12:25:09,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:25:09,066 INFO L276 IsEmpty]: Start isEmpty. Operand 67517 states and 195003 transitions. [2022-01-18 12:25:09,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 12:25:09,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:25:09,361 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:25:09,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-01-18 12:25:09,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:25:09,561 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:25:09,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:25:09,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1872457780, now seen corresponding path program 79 times [2022-01-18 12:25:09,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:25:09,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2532747] [2022-01-18 12:25:09,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:25:09,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:25:09,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:25:09,719 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:25:09,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:25:09,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2532747] [2022-01-18 12:25:09,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2532747] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:25:09,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473673487] [2022-01-18 12:25:09,719 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:25:09,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:25:09,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:25:09,720 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:25:09,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-01-18 12:25:09,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:25:09,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:25:09,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:25:10,021 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:25:10,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:25:10,384 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:25:10,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473673487] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:25:10,384 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:25:10,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-01-18 12:25:10,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881572599] [2022-01-18 12:25:10,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:25:10,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 12:25:10,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:25:10,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 12:25:10,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 12:25:10,385 INFO L87 Difference]: Start difference. First operand 67517 states and 195003 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:25:36,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:25:36,822 INFO L93 Difference]: Finished difference Result 92409 states and 264248 transitions. [2022-01-18 12:25:36,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 283 states. [2022-01-18 12:25:36,823 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-18 12:25:36,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:25:37,039 INFO L225 Difference]: With dead ends: 92409 [2022-01-18 12:25:37,039 INFO L226 Difference]: Without dead ends: 91749 [2022-01-18 12:25:37,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38142 ImplicationChecksByTransitivity, 23.6s TimeCoverageRelationStatistics Valid=9186, Invalid=81716, Unknown=0, NotChecked=0, Total=90902 [2022-01-18 12:25:37,042 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 1853 mSDsluCounter, 5324 mSDsCounter, 0 mSdLazyCounter, 2875 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1853 SdHoareTripleChecker+Valid, 5049 SdHoareTripleChecker+Invalid, 3107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 2875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-18 12:25:37,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1853 Valid, 5049 Invalid, 3107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 2875 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-18 12:25:37,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91749 states. [2022-01-18 12:25:38,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91749 to 68141. [2022-01-18 12:25:38,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68141 states, 68140 states have (on average 2.8849867918990313) internal successors, (196583), 68140 states have internal predecessors, (196583), 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) [2022-01-18 12:25:38,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68141 states to 68141 states and 196583 transitions. [2022-01-18 12:25:38,875 INFO L78 Accepts]: Start accepts. Automaton has 68141 states and 196583 transitions. Word has length 85 [2022-01-18 12:25:38,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:25:38,875 INFO L470 AbstractCegarLoop]: Abstraction has 68141 states and 196583 transitions. [2022-01-18 12:25:38,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:25:38,875 INFO L276 IsEmpty]: Start isEmpty. Operand 68141 states and 196583 transitions. [2022-01-18 12:25:38,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 12:25:38,998 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:25:38,998 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:25:39,014 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-01-18 12:25:39,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2022-01-18 12:25:39,199 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:25:39,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:25:39,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1362410024, now seen corresponding path program 80 times [2022-01-18 12:25:39,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:25:39,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055602850] [2022-01-18 12:25:39,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:25:39,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:25:39,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:25:39,393 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:25:39,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:25:39,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055602850] [2022-01-18 12:25:39,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055602850] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:25:39,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970133636] [2022-01-18 12:25:39,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:25:39,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:25:39,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:25:39,424 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:25:39,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-01-18 12:25:39,745 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:25:39,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:25:39,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:25:39,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:25:39,993 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:25:39,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:25:40,330 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:25:40,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970133636] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:25:40,330 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:25:40,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-01-18 12:25:40,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267418855] [2022-01-18 12:25:40,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:25:40,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 12:25:40,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:25:40,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 12:25:40,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=936, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 12:25:40,331 INFO L87 Difference]: Start difference. First operand 68141 states and 196583 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:26:27,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:26:27,084 INFO L93 Difference]: Finished difference Result 85940 states and 245990 transitions. [2022-01-18 12:26:27,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2022-01-18 12:26:27,084 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2022-01-18 12:26:27,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:26:27,294 INFO L225 Difference]: With dead ends: 85940 [2022-01-18 12:26:27,294 INFO L226 Difference]: Without dead ends: 85880 [2022-01-18 12:26:27,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21246 ImplicationChecksByTransitivity, 43.3s TimeCoverageRelationStatistics Valid=6881, Invalid=45787, Unknown=2, NotChecked=0, Total=52670 [2022-01-18 12:26:27,296 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 1583 mSDsluCounter, 4817 mSDsCounter, 0 mSdLazyCounter, 2313 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 4676 SdHoareTripleChecker+Invalid, 2567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 2313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:26:27,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1583 Valid, 4676 Invalid, 2567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 2313 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-01-18 12:26:27,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85880 states. [2022-01-18 12:26:28,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85880 to 72265. [2022-01-18 12:26:28,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72265 states, 72264 states have (on average 2.8886305767740508) internal successors, (208744), 72264 states have internal predecessors, (208744), 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) [2022-01-18 12:26:29,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72265 states to 72265 states and 208744 transitions. [2022-01-18 12:26:29,333 INFO L78 Accepts]: Start accepts. Automaton has 72265 states and 208744 transitions. Word has length 85 [2022-01-18 12:26:29,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:26:29,333 INFO L470 AbstractCegarLoop]: Abstraction has 72265 states and 208744 transitions. [2022-01-18 12:26:29,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:26:29,334 INFO L276 IsEmpty]: Start isEmpty. Operand 72265 states and 208744 transitions. [2022-01-18 12:26:29,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 12:26:29,456 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:26:29,456 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:26:29,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Ended with exit code 0 [2022-01-18 12:26:29,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90,81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:26:29,657 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:26:29,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:26:29,657 INFO L85 PathProgramCache]: Analyzing trace with hash -871372052, now seen corresponding path program 81 times [2022-01-18 12:26:29,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:26:29,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185200834] [2022-01-18 12:26:29,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:26:29,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:26:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:26:29,816 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:26:29,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:26:29,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185200834] [2022-01-18 12:26:29,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185200834] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:26:29,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207785073] [2022-01-18 12:26:29,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:26:29,816 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:26:29,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:26:29,817 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:26:29,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-01-18 12:26:29,903 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:26:29,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:26:29,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:26:29,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:26:30,126 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:26:30,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:26:30,630 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:26:30,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207785073] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:26:30,631 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:26:30,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 32 [2022-01-18 12:26:30,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253579621] [2022-01-18 12:26:30,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:26:30,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-01-18 12:26:30,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:26:30,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-01-18 12:26:30,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=881, Unknown=0, NotChecked=0, Total=992 [2022-01-18 12:26:30,632 INFO L87 Difference]: Start difference. First operand 72265 states and 208744 transitions. Second operand has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 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) [2022-01-18 12:26:52,095 WARN L228 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 63 DAG size of output: 57 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 12:27:19,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:27:19,018 INFO L93 Difference]: Finished difference Result 81725 states and 234691 transitions. [2022-01-18 12:27:19,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2022-01-18 12:27:19,019 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 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 85 [2022-01-18 12:27:19,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:27:19,213 INFO L225 Difference]: With dead ends: 81725 [2022-01-18 12:27:19,214 INFO L226 Difference]: Without dead ends: 81653 [2022-01-18 12:27:19,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14131 ImplicationChecksByTransitivity, 44.2s TimeCoverageRelationStatistics Valid=4455, Invalid=31835, Unknown=0, NotChecked=0, Total=36290 [2022-01-18 12:27:19,215 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 1141 mSDsluCounter, 3775 mSDsCounter, 0 mSdLazyCounter, 2060 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 3740 SdHoareTripleChecker+Invalid, 2287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 2060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:27:19,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1141 Valid, 3740 Invalid, 2287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 2060 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-01-18 12:27:19,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81653 states. [2022-01-18 12:27:20,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81653 to 73137. [2022-01-18 12:27:20,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73137 states, 73136 states have (on average 2.8886184642310218) internal successors, (211262), 73136 states have internal predecessors, (211262), 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) [2022-01-18 12:27:21,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73137 states to 73137 states and 211262 transitions. [2022-01-18 12:27:21,135 INFO L78 Accepts]: Start accepts. Automaton has 73137 states and 211262 transitions. Word has length 85 [2022-01-18 12:27:21,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:27:21,135 INFO L470 AbstractCegarLoop]: Abstraction has 73137 states and 211262 transitions. [2022-01-18 12:27:21,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.21875) internal successors, (135), 32 states have internal predecessors, (135), 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) [2022-01-18 12:27:21,135 INFO L276 IsEmpty]: Start isEmpty. Operand 73137 states and 211262 transitions. [2022-01-18 12:27:21,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-18 12:27:21,274 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:27:21,275 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:27:21,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Forceful destruction successful, exit code 0 [2022-01-18 12:27:21,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:27:21,475 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:27:21,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:27:21,475 INFO L85 PathProgramCache]: Analyzing trace with hash -850654666, now seen corresponding path program 82 times [2022-01-18 12:27:21,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:27:21,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766659192] [2022-01-18 12:27:21,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:27:21,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:27:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:27:21,902 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:27:21,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:27:21,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766659192] [2022-01-18 12:27:21,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766659192] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:27:21,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29889667] [2022-01-18 12:27:21,902 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:27:21,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:27:21,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:27:21,912 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 12:27:21,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-01-18 12:27:22,005 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:27:22,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:27:22,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 12:27:22,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:27:22,239 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:27:22,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:27:22,605 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:27:22,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29889667] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:27:22,605 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:27:22,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 33 [2022-01-18 12:27:22,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850396842] [2022-01-18 12:27:22,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:27:22,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-01-18 12:27:22,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:27:22,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-01-18 12:27:22,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=943, Unknown=0, NotChecked=0, Total=1056 [2022-01-18 12:27:22,606 INFO L87 Difference]: Start difference. First operand 73137 states and 211262 transitions. Second operand has 33 states, 33 states have (on average 4.0606060606060606) internal successors, (134), 33 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-01-18 12:27:44,417 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 12:27:44,417 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 12:27:44,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 112 states. [2022-01-18 12:27:44,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6223 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=2851, Invalid=14971, Unknown=0, NotChecked=0, Total=17822 [2022-01-18 12:27:44,632 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 748 mSDsluCounter, 2058 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 748 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-18 12:27:44,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [748 Valid, 2080 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-18 12:27:44,632 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 12:27:44,649 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Ended with exit code 0 [2022-01-18 12:27:44,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable92 [2022-01-18 12:27:44,833 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (73137states) and FLOYD_HOARE automaton (currently 112 states, 33 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 134 known predicates. [2022-01-18 12:27:44,835 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 12:27:44,835 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 12:27:44,837 INFO L732 BasicCegarLoop]: Path program histogram: [82, 9, 1, 1] [2022-01-18 12:27:44,838 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 12:27:44,838 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 12:27:44,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 12:27:44 BasicIcfg [2022-01-18 12:27:44,839 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 12:27:44,840 INFO L158 Benchmark]: Toolchain (without parser) took 823700.67ms. Allocated memory was 461.4MB in the beginning and 4.3GB in the end (delta: 3.9GB). Free memory was 405.4MB in the beginning and 3.5GB in the end (delta: -3.1GB). Peak memory consumption was 797.5MB. Max. memory is 16.0GB. [2022-01-18 12:27:44,840 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 461.4MB. Free memory is still 421.5MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 12:27:44,840 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.10ms. Allocated memory was 461.4MB in the beginning and 675.3MB in the end (delta: 213.9MB). Free memory was 405.3MB in the beginning and 643.9MB in the end (delta: -238.7MB). Peak memory consumption was 8.6MB. Max. memory is 16.0GB. [2022-01-18 12:27:44,840 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.49ms. Allocated memory is still 675.3MB. Free memory was 643.9MB in the beginning and 643.0MB in the end (delta: 903.4kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 12:27:44,840 INFO L158 Benchmark]: Boogie Preprocessor took 18.74ms. Allocated memory is still 675.3MB. Free memory was 643.0MB in the beginning and 642.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 12:27:44,840 INFO L158 Benchmark]: RCFGBuilder took 268.89ms. Allocated memory is still 675.3MB. Free memory was 640.9MB in the beginning and 625.2MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2022-01-18 12:27:44,840 INFO L158 Benchmark]: TraceAbstraction took 823149.74ms. Allocated memory was 675.3MB in the beginning and 4.3GB in the end (delta: 3.7GB). Free memory was 624.2MB in the beginning and 3.5GB in the end (delta: -2.9GB). Peak memory consumption was 804.2MB. Max. memory is 16.0GB. [2022-01-18 12:27:44,840 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 461.4MB. Free memory is still 421.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 229.10ms. Allocated memory was 461.4MB in the beginning and 675.3MB in the end (delta: 213.9MB). Free memory was 405.3MB in the beginning and 643.9MB in the end (delta: -238.7MB). Peak memory consumption was 8.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 29.49ms. Allocated memory is still 675.3MB. Free memory was 643.9MB in the beginning and 643.0MB in the end (delta: 903.4kB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 18.74ms. Allocated memory is still 675.3MB. Free memory was 643.0MB in the beginning and 642.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 268.89ms. Allocated memory is still 675.3MB. Free memory was 640.9MB in the beginning and 625.2MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 823149.74ms. Allocated memory was 675.3MB in the beginning and 4.3GB in the end (delta: 3.7GB). Free memory was 624.2MB in the beginning and 3.5GB in the end (delta: -2.9GB). Peak memory consumption was 804.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (73137states) and FLOYD_HOARE automaton (currently 112 states, 33 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 134 known predicates. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (73137states) and FLOYD_HOARE automaton (currently 112 states, 33 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 134 known predicates. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (73137states) and FLOYD_HOARE automaton (currently 112 states, 33 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 134 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 102 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 823.0s, OverallIterations: 93, TraceHistogramMax: 3, PathProgramHistogramMax: 82, EmptinessCheckTime: 3.5s, AutomataDifference: 707.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 71975 SdHoareTripleChecker+Valid, 94.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 71975 mSDsluCounter, 200695 SdHoareTripleChecker+Invalid, 85.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 201824 mSDsCounter, 8683 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 103212 IncrementalHoareTripleChecker+Invalid, 111896 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8683 mSolverCounterUnsat, 14965 mSDtfsCounter, 103212 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21564 GetRequests, 12016 SyntacticMatches, 72 SemanticMatches, 9475 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591870 ImplicationChecksByTransitivity, 606.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73137occurred in iteration=92, InterpolantAutomatonStates: 8684, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 44.5s AutomataMinimizationTime, 92 MinimizatonAttempts, 445020 StatesRemovedByMinimization, 91 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 42.8s InterpolantComputationTime, 13545 NumberOfCodeBlocks, 13428 NumberOfCodeBlocksAsserted, 272 NumberOfCheckSat, 19639 ConstructedInterpolants, 0 QuantifiedInterpolants, 78064 SizeOfPredicates, 757 NumberOfNonLiveVariables, 14242 ConjunctsInSsa, 1366 ConjunctsInUnsatCore, 256 InterpolantComputations, 12 PerfectInterpolantSequences, 1751/3352 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown