/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-bad-threaded-sum-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 11:58:49,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 11:58:49,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 11:58:49,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 11:58:49,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 11:58:49,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 11:58:49,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 11:58:49,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 11:58:49,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 11:58:49,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 11:58:49,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 11:58:49,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 11:58:49,258 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 11:58:49,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 11:58:49,259 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 11:58:49,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 11:58:49,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 11:58:49,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 11:58:49,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 11:58:49,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 11:58:49,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 11:58:49,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 11:58:49,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 11:58:49,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 11:58:49,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 11:58:49,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 11:58:49,271 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 11:58:49,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 11:58:49,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 11:58:49,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-18 11:58:49,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 11:58:49,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 11:58:49,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 11:58:49,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 11:58:49,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 11:58:49,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 11:58:49,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 11:58:49,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 11:58:49,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 11:58:49,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 11:58:49,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 11:58:49,279 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 11:58:49,296 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 11:58:49,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 11:58:49,297 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 11:58:49,297 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 11:58:49,298 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 11:58:49,298 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 11:58:49,298 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 11:58:49,298 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 11:58:49,299 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 11:58:49,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 11:58:49,299 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 11:58:49,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 11:58:49,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 11:58:49,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 11:58:49,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 11:58:49,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 11:58:49,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 11:58:49,300 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 11:58:49,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 11:58:49,301 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 11:58:49,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 11:58:49,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 11:58:49,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 11:58:49,301 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 11:58:49,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 11:58:49,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 11:58:49,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 11:58:49,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 11:58:49,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 11:58:49,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 11:58:49,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 11:58:49,304 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 11:58:49,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 11:58:49,304 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 11:58:49,304 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 11:58:49,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 11:58:49,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 11:58:49,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 11:58:49,506 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 11:58:49,507 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 11:58:49,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2022-01-18 11:58:49,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a469f430f/bd02c90150de4030bfe84c0ead2e9003/FLAGfbd0d14bd [2022-01-18 11:58:49,896 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 11:58:49,896 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-threaded-sum-2.wvr.c [2022-01-18 11:58:49,902 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a469f430f/bd02c90150de4030bfe84c0ead2e9003/FLAGfbd0d14bd [2022-01-18 11:58:49,911 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a469f430f/bd02c90150de4030bfe84c0ead2e9003 [2022-01-18 11:58:49,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 11:58:49,914 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 11:58:49,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 11:58:49,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 11:58:49,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 11:58:49,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 11:58:49" (1/1) ... [2022-01-18 11:58:49,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71e701e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:58:49, skipping insertion in model container [2022-01-18 11:58:49,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 11:58:49" (1/1) ... [2022-01-18 11:58:49,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 11:58:49,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 11:58:50,114 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-bad-threaded-sum-2.wvr.c[2476,2489] [2022-01-18 11:58:50,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 11:58:50,134 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 11:58:50,154 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-bad-threaded-sum-2.wvr.c[2476,2489] [2022-01-18 11:58:50,155 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 11:58:50,168 INFO L208 MainTranslator]: Completed translation [2022-01-18 11:58:50,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:58:50 WrapperNode [2022-01-18 11:58:50,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 11:58:50,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 11:58:50,173 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 11:58:50,173 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 11:58:50,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:58:50" (1/1) ... [2022-01-18 11:58:50,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:58:50" (1/1) ... [2022-01-18 11:58:50,210 INFO L137 Inliner]: procedures = 21, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2022-01-18 11:58:50,211 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 11:58:50,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 11:58:50,212 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 11:58:50,212 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 11:58:50,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:58:50" (1/1) ... [2022-01-18 11:58:50,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:58:50" (1/1) ... [2022-01-18 11:58:50,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:58:50" (1/1) ... [2022-01-18 11:58:50,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:58:50" (1/1) ... [2022-01-18 11:58:50,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:58:50" (1/1) ... [2022-01-18 11:58:50,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:58:50" (1/1) ... [2022-01-18 11:58:50,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:58:50" (1/1) ... [2022-01-18 11:58:50,230 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 11:58:50,231 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 11:58:50,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 11:58:50,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 11:58:50,232 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:58:50" (1/1) ... [2022-01-18 11:58:50,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 11:58:50,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:58:50,257 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 11:58:50,265 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 11:58:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 11:58:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 11:58:50,286 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 11:58:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 11:58:50,286 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 11:58:50,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 11:58:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 11:58:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 11:58:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 11:58:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 11:58:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 11:58:50,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 11:58:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 11:58:50,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 11:58:50,289 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 11:58:50,343 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 11:58:50,344 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 11:58:50,474 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 11:58:50,510 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 11:58:50,510 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-18 11:58:50,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 11:58:50 BoogieIcfgContainer [2022-01-18 11:58:50,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 11:58:50,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 11:58:50,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 11:58:50,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 11:58:50,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 11:58:49" (1/3) ... [2022-01-18 11:58:50,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756739f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 11:58:50, skipping insertion in model container [2022-01-18 11:58:50,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 11:58:50" (2/3) ... [2022-01-18 11:58:50,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@756739f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 11:58:50, skipping insertion in model container [2022-01-18 11:58:50,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 11:58:50" (3/3) ... [2022-01-18 11:58:50,522 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-bad-threaded-sum-2.wvr.c [2022-01-18 11:58:50,530 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 11:58:50,530 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 11:58:50,530 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 11:58:50,531 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 11:58:50,597 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,598 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,599 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,599 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,599 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,600 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,600 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,600 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,600 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,601 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,601 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,601 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,601 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,601 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,602 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,602 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,602 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,602 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,603 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,604 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,604 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,605 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,605 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,605 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,606 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,606 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,606 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,606 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,607 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,607 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,607 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,607 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,608 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,608 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,608 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,608 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,614 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,614 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,614 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,614 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,614 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,619 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,619 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,619 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,619 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,619 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 11:58:50,636 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 11:58:50,685 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 11:58:50,697 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 11:58:50,698 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 11:58:50,709 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 89 places, 88 transitions, 192 flow [2022-01-18 11:58:50,763 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 336 states, 335 states have (on average 2.582089552238806) internal successors, (865), 335 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:58:50,766 INFO L276 IsEmpty]: Start isEmpty. Operand has 336 states, 335 states have (on average 2.582089552238806) internal successors, (865), 335 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:58:50,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-18 11:58:50,782 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:58:50,783 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] [2022-01-18 11:58:50,783 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 11:58:50,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:58:50,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1436780155, now seen corresponding path program 1 times [2022-01-18 11:58:50,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:58:50,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343642422] [2022-01-18 11:58:50,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:58:50,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:58:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:58:51,044 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 11:58:51,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:58:51,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343642422] [2022-01-18 11:58:51,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343642422] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:58:51,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:58:51,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 11:58:51,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837321024] [2022-01-18 11:58:51,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:58:51,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 11:58:51,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:58:51,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 11:58:51,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 11:58:51,095 INFO L87 Difference]: Start difference. First operand has 336 states, 335 states have (on average 2.582089552238806) internal successors, (865), 335 states have internal predecessors, (865), 0 states have call successors, (0), 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 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:58:51,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:58:51,154 INFO L93 Difference]: Finished difference Result 336 states and 794 transitions. [2022-01-18 11:58:51,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 11:58:51,157 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-01-18 11:58:51,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:58:51,176 INFO L225 Difference]: With dead ends: 336 [2022-01-18 11:58:51,176 INFO L226 Difference]: Without dead ends: 334 [2022-01-18 11:58:51,178 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 11:58:51,182 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 11:58:51,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 11:58:51,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-01-18 11:58:51,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2022-01-18 11:58:51,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 333 states have (on average 2.3783783783783785) internal successors, (792), 333 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:58:51,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 792 transitions. [2022-01-18 11:58:51,264 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 792 transitions. Word has length 64 [2022-01-18 11:58:51,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:58:51,264 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 792 transitions. [2022-01-18 11:58:51,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:58:51,265 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 792 transitions. [2022-01-18 11:58:51,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-18 11:58:51,268 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:58:51,268 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] [2022-01-18 11:58:51,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 11:58:51,269 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 11:58:51,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:58:51,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1759613989, now seen corresponding path program 1 times [2022-01-18 11:58:51,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:58:51,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103231771] [2022-01-18 11:58:51,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:58:51,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:58:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:58:51,524 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 11:58:51,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:58:51,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103231771] [2022-01-18 11:58:51,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103231771] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:58:51,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:58:51,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 11:58:51,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678375749] [2022-01-18 11:58:51,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:58:51,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 11:58:51,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:58:51,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 11:58:51,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-18 11:58:51,527 INFO L87 Difference]: Start difference. First operand 334 states and 792 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:58:51,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:58:51,677 INFO L93 Difference]: Finished difference Result 481 states and 1212 transitions. [2022-01-18 11:58:51,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 11:58:51,678 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-01-18 11:58:51,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:58:51,681 INFO L225 Difference]: With dead ends: 481 [2022-01-18 11:58:51,684 INFO L226 Difference]: Without dead ends: 433 [2022-01-18 11:58:51,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-18 11:58:51,685 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 78 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 11:58:51,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 223 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 11:58:51,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2022-01-18 11:58:51,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 377. [2022-01-18 11:58:51,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 376 states have (on average 2.4627659574468086) internal successors, (926), 376 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:58:51,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 926 transitions. [2022-01-18 11:58:51,710 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 926 transitions. Word has length 64 [2022-01-18 11:58:51,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:58:51,710 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 926 transitions. [2022-01-18 11:58:51,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:58:51,711 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 926 transitions. [2022-01-18 11:58:51,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-18 11:58:51,713 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:58:51,713 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] [2022-01-18 11:58:51,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 11:58:51,713 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 11:58:51,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:58:51,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1477238862, now seen corresponding path program 1 times [2022-01-18 11:58:51,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:58:51,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238919165] [2022-01-18 11:58:51,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:58:51,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:58:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:58:52,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 11:58:52,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:58:52,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238919165] [2022-01-18 11:58:52,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238919165] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 11:58:52,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534861388] [2022-01-18 11:58:52,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:58:52,410 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:58:52,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:58:52,412 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 11:58:52,436 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 11:58:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:58:52,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 11:58:52,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 11:58:53,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 11:58:53,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 11:58:54,953 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 11:58:54,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534861388] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 11:58:54,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 11:58:54,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [13, 15] total 31 [2022-01-18 11:58:54,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362387375] [2022-01-18 11:58:54,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:58:54,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 11:58:54,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:58:54,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 11:58:54,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=718, Unknown=0, NotChecked=0, Total=930 [2022-01-18 11:58:54,956 INFO L87 Difference]: Start difference. First operand 377 states and 926 transitions. Second operand has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:58:56,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:58:56,550 INFO L93 Difference]: Finished difference Result 1227 states and 3160 transitions. [2022-01-18 11:58:56,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 11:58:56,551 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-01-18 11:58:56,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:58:56,557 INFO L225 Difference]: With dead ends: 1227 [2022-01-18 11:58:56,557 INFO L226 Difference]: Without dead ends: 1116 [2022-01-18 11:58:56,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 118 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 767 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=431, Invalid=1825, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 11:58:56,559 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 408 mSDsluCounter, 1040 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 1085 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 11:58:56,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 1085 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 399 Invalid, 0 Unknown, 78 Unchecked, 0.5s Time] [2022-01-18 11:58:56,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2022-01-18 11:58:56,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 445. [2022-01-18 11:58:56,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 2.515765765765766) internal successors, (1117), 444 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:58:56,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1117 transitions. [2022-01-18 11:58:56,578 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1117 transitions. Word has length 68 [2022-01-18 11:58:56,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:58:56,579 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 1117 transitions. [2022-01-18 11:58:56,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.857142857142857) internal successors, (68), 14 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:58:56,579 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1117 transitions. [2022-01-18 11:58:56,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-18 11:58:56,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:58:56,581 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, 1] [2022-01-18 11:58:56,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-18 11:58:56,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:58:56,788 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 11:58:56,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:58:56,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1846595665, now seen corresponding path program 1 times [2022-01-18 11:58:56,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:58:56,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65125888] [2022-01-18 11:58:56,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:58:56,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:58:56,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:58:57,399 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 11:58:57,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:58:57,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65125888] [2022-01-18 11:58:57,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65125888] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 11:58:57,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126116313] [2022-01-18 11:58:57,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:58:57,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:58:57,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:58:57,401 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 11:58:57,406 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 11:58:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:58:57,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 27 conjunts are in the unsatisfiable core [2022-01-18 11:58:57,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 11:58:58,677 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 11:58:58,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 11:59:01,131 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 11:59:01,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1126116313] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 11:59:01,131 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 11:59:01,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16, 17] total 36 [2022-01-18 11:59:01,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727877051] [2022-01-18 11:59:01,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 11:59:01,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 11:59:01,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:59:01,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 11:59:01,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=1023, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 11:59:01,134 INFO L87 Difference]: Start difference. First operand 445 states and 1117 transitions. Second operand has 36 states, 36 states have (on average 4.194444444444445) internal successors, (151), 36 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:59:16,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:59:16,534 INFO L93 Difference]: Finished difference Result 4627 states and 11725 transitions. [2022-01-18 11:59:16,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-01-18 11:59:16,534 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 4.194444444444445) internal successors, (151), 36 states have internal predecessors, (151), 0 states have call successors, (0), 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 71 [2022-01-18 11:59:16,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:59:16,550 INFO L225 Difference]: With dead ends: 4627 [2022-01-18 11:59:16,550 INFO L226 Difference]: Without dead ends: 3133 [2022-01-18 11:59:16,554 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 120 SyntacticMatches, 3 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 5035 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=2288, Invalid=12718, Unknown=0, NotChecked=0, Total=15006 [2022-01-18 11:59:16,555 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 2244 mSDsluCounter, 2139 mSDsCounter, 0 mSdLazyCounter, 1078 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2244 SdHoareTripleChecker+Valid, 2100 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 1078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-01-18 11:59:16,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2244 Valid, 2100 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 1078 Invalid, 0 Unknown, 1 Unchecked, 3.6s Time] [2022-01-18 11:59:16,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3133 states. [2022-01-18 11:59:16,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3133 to 867. [2022-01-18 11:59:16,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 866 states have (on average 2.6547344110854505) internal successors, (2299), 866 states have internal predecessors, (2299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:59:16,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 2299 transitions. [2022-01-18 11:59:16,604 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 2299 transitions. Word has length 71 [2022-01-18 11:59:16,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:59:16,605 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 2299 transitions. [2022-01-18 11:59:16,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 4.194444444444445) internal successors, (151), 36 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:59:16,605 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 2299 transitions. [2022-01-18 11:59:16,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-18 11:59:16,608 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:59:16,608 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-18 11:59:16,617 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 11:59:16,812 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,SelfDestructingSolverStorable3 [2022-01-18 11:59:16,813 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 11:59:16,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:59:16,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1244300115, now seen corresponding path program 2 times [2022-01-18 11:59:16,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:59:16,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675953736] [2022-01-18 11:59:16,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:59:16,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:59:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:59:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 11:59:16,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:59:16,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675953736] [2022-01-18 11:59:16,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675953736] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 11:59:16,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 11:59:16,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 11:59:16,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011269915] [2022-01-18 11:59:16,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 11:59:16,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 11:59:16,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:59:16,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 11:59:16,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 11:59:16,936 INFO L87 Difference]: Start difference. First operand 867 states and 2299 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:59:17,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:59:17,063 INFO L93 Difference]: Finished difference Result 1279 states and 3412 transitions. [2022-01-18 11:59:17,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 11:59:17,064 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-18 11:59:17,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:59:17,070 INFO L225 Difference]: With dead ends: 1279 [2022-01-18 11:59:17,070 INFO L226 Difference]: Without dead ends: 1279 [2022-01-18 11:59:17,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-18 11:59:17,071 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 69 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 11:59:17,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 273 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 11:59:17,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2022-01-18 11:59:17,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 759. [2022-01-18 11:59:17,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 758 states have (on average 2.604221635883905) internal successors, (1974), 758 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:59:17,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1974 transitions. [2022-01-18 11:59:17,093 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1974 transitions. Word has length 72 [2022-01-18 11:59:17,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:59:17,094 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 1974 transitions. [2022-01-18 11:59:17,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:59:17,094 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1974 transitions. [2022-01-18 11:59:17,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 11:59:17,096 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:59:17,096 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 11:59:17,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 11:59:17,097 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 11:59:17,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:59:17,097 INFO L85 PathProgramCache]: Analyzing trace with hash 955660810, now seen corresponding path program 2 times [2022-01-18 11:59:17,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:59:17,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160866019] [2022-01-18 11:59:17,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:59:17,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:59:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:59:17,921 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 11:59:17,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:59:17,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160866019] [2022-01-18 11:59:17,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160866019] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 11:59:17,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965112594] [2022-01-18 11:59:17,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 11:59:17,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:59:17,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:59:17,923 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 11:59:17,924 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 11:59:18,044 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 11:59:18,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 11:59:18,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 11:59:18,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 11:59:18,973 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 11:59:18,973 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 11:59:21,159 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 11:59:21,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965112594] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 11:59:21,163 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 11:59:21,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17, 17] total 35 [2022-01-18 11:59:21,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242349644] [2022-01-18 11:59:21,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 11:59:21,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-01-18 11:59:21,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:59:21,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-01-18 11:59:21,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=992, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 11:59:21,166 INFO L87 Difference]: Start difference. First operand 759 states and 1974 transitions. Second operand has 35 states, 35 states have (on average 4.685714285714286) internal successors, (164), 35 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:59:33,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 11:59:33,069 INFO L93 Difference]: Finished difference Result 3561 states and 9282 transitions. [2022-01-18 11:59:33,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-18 11:59:33,070 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.685714285714286) internal successors, (164), 35 states have internal predecessors, (164), 0 states have call successors, (0), 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 74 [2022-01-18 11:59:33,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 11:59:33,083 INFO L225 Difference]: With dead ends: 3561 [2022-01-18 11:59:33,083 INFO L226 Difference]: Without dead ends: 2976 [2022-01-18 11:59:33,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 125 SyntacticMatches, 4 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2852 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=1486, Invalid=7826, Unknown=0, NotChecked=0, Total=9312 [2022-01-18 11:59:33,086 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 1375 mSDsluCounter, 3004 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 2922 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-01-18 11:59:33,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1375 Valid, 2922 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 1433 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-01-18 11:59:33,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2976 states. [2022-01-18 11:59:33,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2976 to 1047. [2022-01-18 11:59:33,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 1046 states have (on average 2.6873804971319313) internal successors, (2811), 1046 states have internal predecessors, (2811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:59:33,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 2811 transitions. [2022-01-18 11:59:33,126 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 2811 transitions. Word has length 74 [2022-01-18 11:59:33,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 11:59:33,126 INFO L470 AbstractCegarLoop]: Abstraction has 1047 states and 2811 transitions. [2022-01-18 11:59:33,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 4.685714285714286) internal successors, (164), 35 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:59:33,126 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 2811 transitions. [2022-01-18 11:59:33,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-18 11:59:33,129 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 11:59:33,129 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 11:59:33,154 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 11:59:33,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:59:33,354 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 11:59:33,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 11:59:33,354 INFO L85 PathProgramCache]: Analyzing trace with hash -2090126194, now seen corresponding path program 3 times [2022-01-18 11:59:33,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 11:59:33,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263973171] [2022-01-18 11:59:33,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 11:59:33,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 11:59:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 11:59:34,116 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 11:59:34,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 11:59:34,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263973171] [2022-01-18 11:59:34,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263973171] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 11:59:34,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584977681] [2022-01-18 11:59:34,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 11:59:34,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 11:59:34,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 11:59:34,118 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 11:59:34,118 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 11:59:34,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 11:59:34,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 11:59:34,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 11:59:34,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 11:59:35,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 11:59:35,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 11:59:40,015 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 11:59:40,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584977681] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 11:59:40,016 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 11:59:40,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17, 17] total 39 [2022-01-18 11:59:40,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575685544] [2022-01-18 11:59:40,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 11:59:40,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 11:59:40,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 11:59:40,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 11:59:40,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1250, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 11:59:40,017 INFO L87 Difference]: Start difference. First operand 1047 states and 2811 transitions. Second operand has 39 states, 39 states have (on average 4.512820512820513) internal successors, (176), 39 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 11:59:52,057 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 12:00:17,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:00:17,905 INFO L93 Difference]: Finished difference Result 3150 states and 8410 transitions. [2022-01-18 12:00:17,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-01-18 12:00:17,905 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.512820512820513) internal successors, (176), 39 states have internal predecessors, (176), 0 states have call successors, (0), 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 74 [2022-01-18 12:00:17,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:00:17,918 INFO L225 Difference]: With dead ends: 3150 [2022-01-18 12:00:17,918 INFO L226 Difference]: Without dead ends: 2691 [2022-01-18 12:00:17,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3607 ImplicationChecksByTransitivity, 27.9s TimeCoverageRelationStatistics Valid=1552, Invalid=9790, Unknown=0, NotChecked=0, Total=11342 [2022-01-18 12:00:17,922 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 1123 mSDsluCounter, 2561 mSDsCounter, 0 mSdLazyCounter, 1373 mSolverCounterSat, 123 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 2499 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1373 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-01-18 12:00:17,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 2499 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1373 Invalid, 1 Unknown, 0 Unchecked, 12.8s Time] [2022-01-18 12:00:17,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2022-01-18 12:00:17,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 1187. [2022-01-18 12:00:17,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1187 states, 1186 states have (on average 2.725126475548061) internal successors, (3232), 1186 states have internal predecessors, (3232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:00:17,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 3232 transitions. [2022-01-18 12:00:17,967 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 3232 transitions. Word has length 74 [2022-01-18 12:00:17,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:00:17,967 INFO L470 AbstractCegarLoop]: Abstraction has 1187 states and 3232 transitions. [2022-01-18 12:00:17,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.512820512820513) internal successors, (176), 39 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:00:17,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 3232 transitions. [2022-01-18 12:00:17,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-18 12:00:17,970 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:00:17,970 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:17,994 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 12:00:18,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:00:18,192 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:00:18,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:00:18,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1335703416, now seen corresponding path program 3 times [2022-01-18 12:00:18,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:00:18,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230762308] [2022-01-18 12:00:18,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:00:18,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:00:18,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:00:18,439 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 12:00:18,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:00:18,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230762308] [2022-01-18 12:00:18,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230762308] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:00:18,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610293157] [2022-01-18 12:00:18,440 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:00:18,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:00:18,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:00:18,441 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 12:00:18,460 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 12:00:18,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 12:00:18,541 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:00:18,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-18 12:00:18,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:00:19,397 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:00:19,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:00:20,476 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:00:20,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610293157] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:00:20,477 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:00:20,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 19, 18] total 39 [2022-01-18 12:00:20,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50598232] [2022-01-18 12:00:20,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:00:20,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 12:00:20,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:00:20,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 12:00:20,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=284, Invalid=1198, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 12:00:20,479 INFO L87 Difference]: Start difference. First operand 1187 states and 3232 transitions. Second operand has 39 states, 39 states have (on average 4.589743589743589) internal successors, (179), 39 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:00:26,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:00:26,919 INFO L93 Difference]: Finished difference Result 3934 states and 10604 transitions. [2022-01-18 12:00:26,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-18 12:00:26,919 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.589743589743589) internal successors, (179), 39 states have internal predecessors, (179), 0 states have call successors, (0), 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 76 [2022-01-18 12:00:26,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:00:26,933 INFO L225 Difference]: With dead ends: 3934 [2022-01-18 12:00:26,934 INFO L226 Difference]: Without dead ends: 3505 [2022-01-18 12:00:26,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 140 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3578 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=2246, Invalid=9310, Unknown=0, NotChecked=0, Total=11556 [2022-01-18 12:00:26,937 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 1326 mSDsluCounter, 2996 mSDsCounter, 0 mSdLazyCounter, 1644 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1326 SdHoareTripleChecker+Valid, 2974 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 1644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:00:26,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1326 Valid, 2974 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 1644 Invalid, 0 Unknown, 109 Unchecked, 2.4s Time] [2022-01-18 12:00:26,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3505 states. [2022-01-18 12:00:26,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3505 to 1331. [2022-01-18 12:00:26,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1331 states, 1330 states have (on average 2.7518796992481205) internal successors, (3660), 1330 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:00:26,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1331 states to 1331 states and 3660 transitions. [2022-01-18 12:00:26,988 INFO L78 Accepts]: Start accepts. Automaton has 1331 states and 3660 transitions. Word has length 76 [2022-01-18 12:00:26,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:00:26,989 INFO L470 AbstractCegarLoop]: Abstraction has 1331 states and 3660 transitions. [2022-01-18 12:00:26,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 4.589743589743589) internal successors, (179), 39 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:00:26,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1331 states and 3660 transitions. [2022-01-18 12:00:26,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:00:26,992 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:00:26,992 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:00:27,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-18 12:00:27,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:00:27,207 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:00:27,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:00:27,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1260039537, now seen corresponding path program 4 times [2022-01-18 12:00:27,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:00:27,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848432875] [2022-01-18 12:00:27,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:00:27,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:00:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:00:28,485 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:00:28,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:00:28,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848432875] [2022-01-18 12:00:28,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848432875] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:00:28,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186450017] [2022-01-18 12:00:28,486 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:00:28,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:00:28,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:00:28,487 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 12:00:28,520 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 12:00:28,652 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:00:28,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:00:28,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 29 conjunts are in the unsatisfiable core [2022-01-18 12:00:28,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:00:30,123 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:00:30,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:00:41,565 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:00:41,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186450017] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:00:41,565 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:00:41,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 43 [2022-01-18 12:00:41,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295931522] [2022-01-18 12:00:41,565 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:00:41,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-01-18 12:00:41,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:00:41,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-01-18 12:00:41,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1511, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 12:00:41,567 INFO L87 Difference]: Start difference. First operand 1331 states and 3660 transitions. Second operand has 43 states, 43 states have (on average 4.3023255813953485) internal successors, (185), 43 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:01:06,383 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:02:08,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:02:08,389 INFO L93 Difference]: Finished difference Result 4441 states and 11738 transitions. [2022-01-18 12:02:08,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-18 12:02:08,389 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 4.3023255813953485) internal successors, (185), 43 states have internal predecessors, (185), 0 states have call successors, (0), 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 77 [2022-01-18 12:02:08,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:02:08,402 INFO L225 Difference]: With dead ends: 4441 [2022-01-18 12:02:08,403 INFO L226 Difference]: Without dead ends: 3472 [2022-01-18 12:02:08,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 127 SyntacticMatches, 3 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4066 ImplicationChecksByTransitivity, 83.0s TimeCoverageRelationStatistics Valid=1753, Invalid=11350, Unknown=7, NotChecked=0, Total=13110 [2022-01-18 12:02:08,406 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 1376 mSDsluCounter, 3538 mSDsCounter, 0 mSdLazyCounter, 1823 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1376 SdHoareTripleChecker+Valid, 3463 SdHoareTripleChecker+Invalid, 1943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-01-18 12:02:08,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1376 Valid, 3463 Invalid, 1943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1823 Invalid, 0 Unknown, 0 Unchecked, 14.4s Time] [2022-01-18 12:02:08,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3472 states. [2022-01-18 12:02:08,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3472 to 1675. [2022-01-18 12:02:08,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1675 states, 1674 states have (on average 2.792712066905615) internal successors, (4675), 1674 states have internal predecessors, (4675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:02:08,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1675 states to 1675 states and 4675 transitions. [2022-01-18 12:02:08,458 INFO L78 Accepts]: Start accepts. Automaton has 1675 states and 4675 transitions. Word has length 77 [2022-01-18 12:02:08,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:02:08,459 INFO L470 AbstractCegarLoop]: Abstraction has 1675 states and 4675 transitions. [2022-01-18 12:02:08,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 4.3023255813953485) internal successors, (185), 43 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:02:08,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1675 states and 4675 transitions. [2022-01-18 12:02:08,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:02:08,463 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:02:08,463 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:02:08,488 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 12:02:08,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:02:08,679 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:02:08,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:02:08,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1044628751, now seen corresponding path program 5 times [2022-01-18 12:02:08,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:02:08,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922883524] [2022-01-18 12:02:08,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:02:08,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:02:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:02:10,463 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:02:10,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:02:10,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922883524] [2022-01-18 12:02:10,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922883524] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:02:10,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933338105] [2022-01-18 12:02:10,464 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 12:02:10,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:02:10,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:02:10,466 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 12:02:10,466 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 12:02:10,627 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 12:02:10,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:02:10,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-18 12:02:10,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:02:12,360 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:02:12,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:02:15,499 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:02:15,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933338105] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:02:15,499 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:02:15,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20, 19] total 44 [2022-01-18 12:02:15,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914315923] [2022-01-18 12:02:15,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:02:15,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-18 12:02:15,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:02:15,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-18 12:02:15,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=1554, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 12:02:15,501 INFO L87 Difference]: Start difference. First operand 1675 states and 4675 transitions. Second operand has 44 states, 44 states have (on average 3.9318181818181817) internal successors, (173), 44 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:02:41,282 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:03:00,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:03:00,182 INFO L93 Difference]: Finished difference Result 4824 states and 12912 transitions. [2022-01-18 12:03:00,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-01-18 12:03:00,183 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.9318181818181817) internal successors, (173), 44 states have internal predecessors, (173), 0 states have call successors, (0), 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 77 [2022-01-18 12:03:00,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:03:00,192 INFO L225 Difference]: With dead ends: 4824 [2022-01-18 12:03:00,192 INFO L226 Difference]: Without dead ends: 3744 [2022-01-18 12:03:00,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 124 SyntacticMatches, 5 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5741 ImplicationChecksByTransitivity, 37.4s TimeCoverageRelationStatistics Valid=2626, Invalid=15464, Unknown=0, NotChecked=0, Total=18090 [2022-01-18 12:03:00,195 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 2062 mSDsluCounter, 3593 mSDsCounter, 0 mSdLazyCounter, 1921 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 3553 SdHoareTripleChecker+Invalid, 2229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 1921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-01-18 12:03:00,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2062 Valid, 3553 Invalid, 2229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 1921 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2022-01-18 12:03:00,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2022-01-18 12:03:00,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 2015. [2022-01-18 12:03:00,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2015 states, 2014 states have (on average 2.7934458788480634) internal successors, (5626), 2014 states have internal predecessors, (5626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:03:00,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2015 states to 2015 states and 5626 transitions. [2022-01-18 12:03:00,249 INFO L78 Accepts]: Start accepts. Automaton has 2015 states and 5626 transitions. Word has length 77 [2022-01-18 12:03:00,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:03:00,249 INFO L470 AbstractCegarLoop]: Abstraction has 2015 states and 5626 transitions. [2022-01-18 12:03:00,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.9318181818181817) internal successors, (173), 44 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:03:00,250 INFO L276 IsEmpty]: Start isEmpty. Operand 2015 states and 5626 transitions. [2022-01-18 12:03:00,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-18 12:03:00,254 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:03:00,255 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:03:00,278 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 12:03:00,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:03:00,475 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:03:00,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:03:00,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1503926061, now seen corresponding path program 6 times [2022-01-18 12:03:00,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:03:00,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47984516] [2022-01-18 12:03:00,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:03:00,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:03:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:03:01,123 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:03:01,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:03:01,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47984516] [2022-01-18 12:03:01,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47984516] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:03:01,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43646360] [2022-01-18 12:03:01,123 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 12:03:01,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:03:01,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:03:01,124 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 12:03:01,125 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 12:03:01,312 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 12:03:01,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:03:01,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-18 12:03:01,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:03:03,229 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:03:03,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:03:06,006 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:03:06,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43646360] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:03:06,006 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:03:06,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21, 19] total 47 [2022-01-18 12:03:06,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679674350] [2022-01-18 12:03:06,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:03:06,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 12:03:06,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:03:06,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 12:03:06,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=1814, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 12:03:06,008 INFO L87 Difference]: Start difference. First operand 2015 states and 5626 transitions. Second operand has 47 states, 47 states have (on average 3.6808510638297873) internal successors, (173), 47 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:03:53,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:03:53,802 INFO L93 Difference]: Finished difference Result 5509 states and 14778 transitions. [2022-01-18 12:03:53,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-01-18 12:03:53,802 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.6808510638297873) internal successors, (173), 47 states have internal predecessors, (173), 0 states have call successors, (0), 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 77 [2022-01-18 12:03:53,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:03:53,814 INFO L225 Difference]: With dead ends: 5509 [2022-01-18 12:03:53,814 INFO L226 Difference]: Without dead ends: 4591 [2022-01-18 12:03:53,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 123 SyntacticMatches, 4 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6944 ImplicationChecksByTransitivity, 41.1s TimeCoverageRelationStatistics Valid=2686, Invalid=17906, Unknown=0, NotChecked=0, Total=20592 [2022-01-18 12:03:53,817 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 1978 mSDsluCounter, 3933 mSDsCounter, 0 mSdLazyCounter, 2025 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1978 SdHoareTripleChecker+Valid, 3893 SdHoareTripleChecker+Invalid, 2271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 2025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-01-18 12:03:53,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1978 Valid, 3893 Invalid, 2271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 2025 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-01-18 12:03:53,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4591 states. [2022-01-18 12:03:53,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4591 to 2267. [2022-01-18 12:03:53,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2267 states, 2266 states have (on average 2.820388349514563) internal successors, (6391), 2266 states have internal predecessors, (6391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:03:53,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2267 states to 2267 states and 6391 transitions. [2022-01-18 12:03:53,890 INFO L78 Accepts]: Start accepts. Automaton has 2267 states and 6391 transitions. Word has length 77 [2022-01-18 12:03:53,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:03:53,890 INFO L470 AbstractCegarLoop]: Abstraction has 2267 states and 6391 transitions. [2022-01-18 12:03:53,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.6808510638297873) internal successors, (173), 47 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:03:53,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2267 states and 6391 transitions. [2022-01-18 12:03:53,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 12:03:53,896 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:03:53,896 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:03:53,905 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 12:03:54,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-18 12:03:54,102 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:03:54,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:03:54,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1799553041, now seen corresponding path program 7 times [2022-01-18 12:03:54,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:03:54,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827835955] [2022-01-18 12:03:54,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:03:54,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:03:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:03:54,662 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:03:54,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:03:54,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827835955] [2022-01-18 12:03:54,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827835955] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:03:54,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28519431] [2022-01-18 12:03:54,662 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 12:03:54,662 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:03:54,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:03:54,663 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 12:03:54,664 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 12:03:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:03:54,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 38 conjunts are in the unsatisfiable core [2022-01-18 12:03:54,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:03:56,172 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:03:56,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:03:59,316 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:03:59,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28519431] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:03:59,316 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:03:59,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 23, 21] total 48 [2022-01-18 12:03:59,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878811522] [2022-01-18 12:03:59,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:03:59,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-18 12:03:59,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:03:59,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-18 12:03:59,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=1908, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 12:03:59,318 INFO L87 Difference]: Start difference. First operand 2267 states and 6391 transitions. Second operand has 48 states, 48 states have (on average 3.9166666666666665) internal successors, (188), 48 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:05:45,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:05:45,402 INFO L93 Difference]: Finished difference Result 11050 states and 29057 transitions. [2022-01-18 12:05:45,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2022-01-18 12:05:45,403 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.9166666666666665) internal successors, (188), 48 states have internal predecessors, (188), 0 states have call successors, (0), 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 78 [2022-01-18 12:05:45,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:05:45,425 INFO L225 Difference]: With dead ends: 11050 [2022-01-18 12:05:45,426 INFO L226 Difference]: Without dead ends: 9550 [2022-01-18 12:05:45,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 124 SyntacticMatches, 3 SemanticMatches, 274 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30809 ImplicationChecksByTransitivity, 93.7s TimeCoverageRelationStatistics Valid=8662, Invalid=67238, Unknown=0, NotChecked=0, Total=75900 [2022-01-18 12:05:45,432 INFO L933 BasicCegarLoop]: 217 mSDtfsCounter, 3055 mSDsluCounter, 5944 mSDsCounter, 0 mSdLazyCounter, 3513 mSolverCounterSat, 589 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3055 SdHoareTripleChecker+Valid, 5794 SdHoareTripleChecker+Invalid, 4102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 589 IncrementalHoareTripleChecker+Valid, 3513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2022-01-18 12:05:45,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3055 Valid, 5794 Invalid, 4102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [589 Valid, 3513 Invalid, 0 Unknown, 0 Unchecked, 14.7s Time] [2022-01-18 12:05:45,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9550 states. [2022-01-18 12:05:45,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9550 to 3006. [2022-01-18 12:05:45,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3006 states, 3005 states have (on average 2.91414309484193) internal successors, (8757), 3005 states have internal predecessors, (8757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:05:45,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3006 states to 3006 states and 8757 transitions. [2022-01-18 12:05:45,596 INFO L78 Accepts]: Start accepts. Automaton has 3006 states and 8757 transitions. Word has length 78 [2022-01-18 12:05:45,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:05:45,596 INFO L470 AbstractCegarLoop]: Abstraction has 3006 states and 8757 transitions. [2022-01-18 12:05:45,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.9166666666666665) internal successors, (188), 48 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:05:45,597 INFO L276 IsEmpty]: Start isEmpty. Operand 3006 states and 8757 transitions. [2022-01-18 12:05:45,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 12:05:45,603 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:05:45,603 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:05:45,627 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 12:05:45,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:05:45,821 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:05:45,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:05:45,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1217995345, now seen corresponding path program 8 times [2022-01-18 12:05:45,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:05:45,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372101504] [2022-01-18 12:05:45,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:05:45,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:05:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:05:46,726 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:05:46,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:05:46,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372101504] [2022-01-18 12:05:46,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372101504] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:05:46,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515374215] [2022-01-18 12:05:46,727 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 12:05:46,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:05:46,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:05:46,728 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 12:05:46,728 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 12:05:46,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 12:05:46,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:05:46,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-18 12:05:46,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:05:48,210 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:05:48,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:05:51,391 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:05:51,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515374215] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:05:51,391 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:05:51,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 45 [2022-01-18 12:05:51,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586381195] [2022-01-18 12:05:51,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:05:51,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 12:05:51,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:05:51,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 12:05:51,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=1700, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 12:05:51,393 INFO L87 Difference]: Start difference. First operand 3006 states and 8757 transitions. Second operand has 45 states, 45 states have (on average 3.5555555555555554) internal successors, (160), 45 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:06:20,888 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 12:07:22,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:07:22,002 INFO L93 Difference]: Finished difference Result 8797 states and 24003 transitions. [2022-01-18 12:07:22,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 184 states. [2022-01-18 12:07:22,002 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.5555555555555554) internal successors, (160), 45 states have internal predecessors, (160), 0 states have call successors, (0), 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 78 [2022-01-18 12:07:22,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:07:22,018 INFO L225 Difference]: With dead ends: 8797 [2022-01-18 12:07:22,018 INFO L226 Difference]: Without dead ends: 7651 [2022-01-18 12:07:22,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 129 SyntacticMatches, 4 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15796 ImplicationChecksByTransitivity, 72.1s TimeCoverageRelationStatistics Valid=6068, Invalid=37404, Unknown=0, NotChecked=0, Total=43472 [2022-01-18 12:07:22,021 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 2145 mSDsluCounter, 5388 mSDsCounter, 0 mSdLazyCounter, 2911 mSolverCounterSat, 238 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2145 SdHoareTripleChecker+Valid, 5256 SdHoareTripleChecker+Invalid, 3150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 2911 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:07:22,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2145 Valid, 5256 Invalid, 3150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 2911 Invalid, 1 Unknown, 0 Unchecked, 21.1s Time] [2022-01-18 12:07:22,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7651 states. [2022-01-18 12:07:22,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7651 to 3414. [2022-01-18 12:07:22,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3414 states, 3413 states have (on average 2.9402285379431583) internal successors, (10035), 3413 states have internal predecessors, (10035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:07:22,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3414 states to 3414 states and 10035 transitions. [2022-01-18 12:07:22,118 INFO L78 Accepts]: Start accepts. Automaton has 3414 states and 10035 transitions. Word has length 78 [2022-01-18 12:07:22,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:07:22,119 INFO L470 AbstractCegarLoop]: Abstraction has 3414 states and 10035 transitions. [2022-01-18 12:07:22,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.5555555555555554) internal successors, (160), 45 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:07:22,119 INFO L276 IsEmpty]: Start isEmpty. Operand 3414 states and 10035 transitions. [2022-01-18 12:07:22,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 12:07:22,127 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:07:22,127 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:07:22,134 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 12:07:22,331 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,SelfDestructingSolverStorable12 [2022-01-18 12:07:22,332 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:07:22,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:07:22,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1762627179, now seen corresponding path program 9 times [2022-01-18 12:07:22,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:07:22,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565082104] [2022-01-18 12:07:22,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:07:22,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:07:22,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:07:22,626 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:07:22,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:07:22,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565082104] [2022-01-18 12:07:22,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565082104] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:07:22,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407721046] [2022-01-18 12:07:22,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 12:07:22,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:07:22,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:07:22,628 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 12:07:22,629 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 12:07:22,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 12:07:22,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:07:22,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 12:07:22,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:07:23,474 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:07:23,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:07:23,972 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:07:23,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407721046] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:07:23,972 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:07:23,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 13] total 27 [2022-01-18 12:07:23,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069093649] [2022-01-18 12:07:23,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:07:23,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 12:07:23,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:07:23,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 12:07:23,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=596, Unknown=0, NotChecked=0, Total=702 [2022-01-18 12:07:23,974 INFO L87 Difference]: Start difference. First operand 3414 states and 10035 transitions. Second operand has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:07:26,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 12:07:26,077 INFO L93 Difference]: Finished difference Result 7801 states and 21927 transitions. [2022-01-18 12:07:26,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 12:07:26,077 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 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 78 [2022-01-18 12:07:26,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 12:07:26,089 INFO L225 Difference]: With dead ends: 7801 [2022-01-18 12:07:26,089 INFO L226 Difference]: Without dead ends: 7801 [2022-01-18 12:07:26,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 135 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 911 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=441, Invalid=2639, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 12:07:26,090 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 901 mSDsluCounter, 2454 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 2482 SdHoareTripleChecker+Invalid, 1238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 12:07:26,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [901 Valid, 2482 Invalid, 1238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 12:07:26,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7801 states. [2022-01-18 12:07:26,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7801 to 4154. [2022-01-18 12:07:26,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4154 states, 4153 states have (on average 2.9785697086443537) internal successors, (12370), 4153 states have internal predecessors, (12370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:07:26,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4154 states to 4154 states and 12370 transitions. [2022-01-18 12:07:26,195 INFO L78 Accepts]: Start accepts. Automaton has 4154 states and 12370 transitions. Word has length 78 [2022-01-18 12:07:26,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 12:07:26,195 INFO L470 AbstractCegarLoop]: Abstraction has 4154 states and 12370 transitions. [2022-01-18 12:07:26,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 4.37037037037037) internal successors, (118), 27 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:07:26,195 INFO L276 IsEmpty]: Start isEmpty. Operand 4154 states and 12370 transitions. [2022-01-18 12:07:26,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 12:07:26,204 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 12:07:26,204 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 12:07:26,229 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 12:07:26,427 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,SelfDestructingSolverStorable13 [2022-01-18 12:07:26,427 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 12:07:26,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 12:07:26,427 INFO L85 PathProgramCache]: Analyzing trace with hash 63050411, now seen corresponding path program 10 times [2022-01-18 12:07:26,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 12:07:26,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519300532] [2022-01-18 12:07:26,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 12:07:26,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 12:07:26,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 12:07:27,439 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:07:27,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 12:07:27,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519300532] [2022-01-18 12:07:27,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519300532] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 12:07:27,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598797247] [2022-01-18 12:07:27,439 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 12:07:27,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 12:07:27,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 12:07:27,440 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 12:07:27,441 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 12:07:27,571 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 12:07:27,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 12:07:27,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 35 conjunts are in the unsatisfiable core [2022-01-18 12:07:27,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 12:07:29,472 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:07:29,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 12:07:35,857 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 12:07:35,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598797247] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 12:07:35,857 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 12:07:35,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 22] total 51 [2022-01-18 12:07:35,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676857467] [2022-01-18 12:07:35,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 12:07:35,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-18 12:07:35,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 12:07:35,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-18 12:07:35,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=2194, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 12:07:35,858 INFO L87 Difference]: Start difference. First operand 4154 states and 12370 transitions. Second operand has 51 states, 51 states have (on average 3.549019607843137) internal successors, (181), 51 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 12:07:43,342 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-18 12:09:23,411 WARN L228 SmtUtils]: Spent 5.38s on a formula simplification. DAG size of input: 144 DAG size of output: 86 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 12:09:53,857 WARN L228 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 159 DAG size of output: 106 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 12:10:40,739 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2022-01-18 12:12:57,436 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 12:12:57,438 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 12:12:57,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2022-01-18 12:12:57,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 15776 ImplicationChecksByTransitivity, 292.3s TimeCoverageRelationStatistics Valid=4826, Invalid=36576, Unknown=10, NotChecked=0, Total=41412 [2022-01-18 12:12:57,539 INFO L933 BasicCegarLoop]: 167 mSDtfsCounter, 1598 mSDsluCounter, 3044 mSDsCounter, 0 mSdLazyCounter, 2524 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1598 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 3117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 2524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 161 IncrementalHoareTripleChecker+Unchecked, 33.2s IncrementalHoareTripleChecker+Time [2022-01-18 12:12:57,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1598 Valid, 3147 Invalid, 3117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 2524 Invalid, 0 Unknown, 161 Unchecked, 33.2s Time] [2022-01-18 12:12:57,541 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 12:12:57,557 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 12:12:57,741 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,SelfDestructingSolverStorable14 [2022-01-18 12:12:57,741 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (4154states) and FLOYD_HOARE automaton (currently 166 states, 51 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 204 known predicates. [2022-01-18 12:12:57,743 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 12:12:57,743 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 12:12:57,746 INFO L732 BasicCegarLoop]: Path program histogram: [10, 3, 1, 1] [2022-01-18 12:12:57,748 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 12:12:57,748 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 12:12:57,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 12:12:57 BasicIcfg [2022-01-18 12:12:57,750 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 12:12:57,751 INFO L158 Benchmark]: Toolchain (without parser) took 847836.73ms. Allocated memory was 373.3MB in the beginning and 528.5MB in the end (delta: 155.2MB). Free memory was 320.0MB in the beginning and 373.7MB in the end (delta: -53.6MB). Peak memory consumption was 103.3MB. Max. memory is 16.0GB. [2022-01-18 12:12:57,751 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 373.3MB. Free memory is still 337.2MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 12:12:57,752 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.36ms. Allocated memory is still 373.3MB. Free memory was 319.7MB in the beginning and 344.8MB in the end (delta: -25.1MB). Peak memory consumption was 17.3MB. Max. memory is 16.0GB. [2022-01-18 12:12:57,752 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.53ms. Allocated memory is still 373.3MB. Free memory was 344.8MB in the beginning and 342.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 12:12:57,753 INFO L158 Benchmark]: Boogie Preprocessor took 18.62ms. Allocated memory is still 373.3MB. Free memory was 342.7MB in the beginning and 341.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 12:12:57,753 INFO L158 Benchmark]: RCFGBuilder took 281.05ms. Allocated memory is still 373.3MB. Free memory was 341.7MB in the beginning and 327.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-18 12:12:57,753 INFO L158 Benchmark]: TraceAbstraction took 847237.14ms. Allocated memory was 373.3MB in the beginning and 528.5MB in the end (delta: 155.2MB). Free memory was 326.0MB in the beginning and 373.7MB in the end (delta: -47.7MB). Peak memory consumption was 111.1MB. Max. memory is 16.0GB. [2022-01-18 12:12:57,756 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 373.3MB. Free memory is still 337.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 256.36ms. Allocated memory is still 373.3MB. Free memory was 319.7MB in the beginning and 344.8MB in the end (delta: -25.1MB). Peak memory consumption was 17.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 38.53ms. Allocated memory is still 373.3MB. Free memory was 344.8MB in the beginning and 342.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 18.62ms. Allocated memory is still 373.3MB. Free memory was 342.7MB in the beginning and 341.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 281.05ms. Allocated memory is still 373.3MB. Free memory was 341.7MB in the beginning and 327.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 847237.14ms. Allocated memory was 373.3MB in the beginning and 528.5MB in the end (delta: 155.2MB). Free memory was 326.0MB in the beginning and 373.7MB in the end (delta: -47.7MB). Peak memory consumption was 111.1MB. 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: 95]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (4154states) and FLOYD_HOARE automaton (currently 166 states, 51 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 204 known predicates. - TimeoutResultAtElement [Line: 89]: 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 (4154states) and FLOYD_HOARE automaton (currently 166 states, 51 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 204 known predicates. - TimeoutResultAtElement [Line: 90]: 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 (4154states) and FLOYD_HOARE automaton (currently 166 states, 51 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 204 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 100 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 847.1s, OverallIterations: 15, TraceHistogramMax: 3, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.1s, AutomataDifference: 773.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 19738 SdHoareTripleChecker+Valid, 127.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19738 mSDsluCounter, 39730 SdHoareTripleChecker+Invalid, 122.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 349 IncrementalHoareTripleChecker+Unchecked, 40006 mSDsCounter, 2742 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21931 IncrementalHoareTripleChecker+Invalid, 25024 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2742 mSolverCounterUnsat, 2174 mSDtfsCounter, 21931 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3184 GetRequests, 1531 SyntacticMatches, 41 SemanticMatches, 1611 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 95886 ImplicationChecksByTransitivity, 678.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4154occurred in iteration=14, InterpolantAutomatonStates: 1191, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 14 MinimizatonAttempts, 29398 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 67.3s InterpolantComputationTime, 2012 NumberOfCodeBlocks, 2012 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 2879 ConstructedInterpolants, 28 QuantifiedInterpolants, 79068 SizeOfPredicates, 182 NumberOfNonLiveVariables, 2026 ConjunctsInSsa, 361 ConjunctsInUnsatCore, 39 InterpolantComputations, 4 PerfectInterpolantSequences, 21/345 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