/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.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/test-context1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 03:01:06,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 03:01:06,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 03:01:06,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 03:01:06,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 03:01:06,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 03:01:06,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 03:01:06,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 03:01:06,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 03:01:06,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 03:01:06,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 03:01:06,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 03:01:06,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 03:01:06,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 03:01:06,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 03:01:06,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 03:01:06,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 03:01:06,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 03:01:06,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 03:01:06,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 03:01:06,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 03:01:06,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 03:01:06,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 03:01:06,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 03:01:06,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-18 03:01:06,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-18 03:01:06,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-18 03:01:06,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-18 03:01:06,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-18 03:01:06,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-18 03:01:06,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-18 03:01:06,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-18 03:01:06,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-18 03:01:06,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-18 03:01:06,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-18 03:01:06,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-18 03:01:06,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-18 03:01:06,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-18 03:01:06,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 03:01:06,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 03:01:06,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 03:01:06,279 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.epf [2022-01-18 03:01:06,308 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 03:01:06,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 03:01:06,309 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 03:01:06,309 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 03:01:06,310 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 03:01:06,310 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 03:01:06,310 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 03:01:06,310 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 03:01:06,310 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 03:01:06,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 03:01:06,311 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 03:01:06,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 03:01:06,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 03:01:06,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 03:01:06,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 03:01:06,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 03:01:06,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 03:01:06,311 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 03:01:06,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 03:01:06,311 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 03:01:06,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 03:01:06,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 03:01:06,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 03:01:06,312 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 03:01:06,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 03:01:06,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 03:01:06,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 03:01:06,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 03:01:06,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 03:01:06,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 03:01:06,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 03:01:06,312 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 03:01:06,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 03:01:06,313 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 03:01:06,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 03:01:06,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 03:01:06,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 03:01:06,512 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 03:01:06,512 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 03:01:06,513 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-context1.wvr.c [2022-01-18 03:01:06,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc1574f7b/67fe2bb5ad504181880840f7a2b6b0e5/FLAGf085805a4 [2022-01-18 03:01:06,904 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 03:01:06,905 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-context1.wvr.c [2022-01-18 03:01:06,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc1574f7b/67fe2bb5ad504181880840f7a2b6b0e5/FLAGf085805a4 [2022-01-18 03:01:06,920 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc1574f7b/67fe2bb5ad504181880840f7a2b6b0e5 [2022-01-18 03:01:06,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 03:01:06,923 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 03:01:06,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 03:01:06,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 03:01:06,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 03:01:06,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 03:01:06" (1/1) ... [2022-01-18 03:01:06,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8e5b45d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:01:06, skipping insertion in model container [2022-01-18 03:01:06,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 03:01:06" (1/1) ... [2022-01-18 03:01:06,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 03:01:06,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 03:01:07,074 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/test-context1.wvr.c[2433,2446] [2022-01-18 03:01:07,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 03:01:07,083 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 03:01:07,095 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/test-context1.wvr.c[2433,2446] [2022-01-18 03:01:07,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 03:01:07,106 INFO L208 MainTranslator]: Completed translation [2022-01-18 03:01:07,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:01:07 WrapperNode [2022-01-18 03:01:07,106 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 03:01:07,107 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 03:01:07,107 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 03:01:07,107 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 03:01:07,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:01:07" (1/1) ... [2022-01-18 03:01:07,122 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:01:07" (1/1) ... [2022-01-18 03:01:07,137 INFO L137 Inliner]: procedures = 24, calls = 34, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 131 [2022-01-18 03:01:07,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 03:01:07,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 03:01:07,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 03:01:07,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 03:01:07,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:01:07" (1/1) ... [2022-01-18 03:01:07,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:01:07" (1/1) ... [2022-01-18 03:01:07,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:01:07" (1/1) ... [2022-01-18 03:01:07,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:01:07" (1/1) ... [2022-01-18 03:01:07,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:01:07" (1/1) ... [2022-01-18 03:01:07,153 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:01:07" (1/1) ... [2022-01-18 03:01:07,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:01:07" (1/1) ... [2022-01-18 03:01:07,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 03:01:07,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 03:01:07,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 03:01:07,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 03:01:07,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:01:07" (1/1) ... [2022-01-18 03:01:07,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 03:01:07,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:01:07,185 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 03:01:07,201 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 03:01:07,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 03:01:07,209 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 03:01:07,209 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 03:01:07,209 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 03:01:07,209 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 03:01:07,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 03:01:07,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 03:01:07,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 03:01:07,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-18 03:01:07,210 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-18 03:01:07,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-18 03:01:07,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 03:01:07,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 03:01:07,210 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 03:01:07,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 03:01:07,211 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 03:01:07,282 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 03:01:07,283 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 03:01:07,514 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 03:01:07,570 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 03:01:07,570 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-18 03:01:07,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 03:01:07 BoogieIcfgContainer [2022-01-18 03:01:07,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 03:01:07,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 03:01:07,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 03:01:07,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 03:01:07,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 03:01:06" (1/3) ... [2022-01-18 03:01:07,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb1f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 03:01:07, skipping insertion in model container [2022-01-18 03:01:07,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 03:01:07" (2/3) ... [2022-01-18 03:01:07,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bb1f01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 03:01:07, skipping insertion in model container [2022-01-18 03:01:07,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 03:01:07" (3/3) ... [2022-01-18 03:01:07,581 INFO L111 eAbstractionObserver]: Analyzing ICFG test-context1.wvr.c [2022-01-18 03:01:07,584 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 03:01:07,585 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 03:01:07,585 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 03:01:07,585 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 03:01:07,606 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,607 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,607 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,607 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,607 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,607 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,608 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,609 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,609 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,609 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,609 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,610 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,610 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,610 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,610 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,610 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,610 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,610 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,611 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,611 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,611 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,611 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,611 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,611 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,611 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,611 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,611 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,611 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,612 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,612 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,612 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,612 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,612 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,614 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,614 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,614 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,615 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,615 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,615 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,615 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,615 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,616 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,616 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,616 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,616 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,616 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,616 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,616 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:01:07,618 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-18 03:01:07,647 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 03:01:07,652 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 03:01:07,653 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 03:01:07,660 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 114 places, 116 transitions, 248 flow [2022-01-18 03:01:07,696 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 331 states, 330 states have (on average 2.4454545454545453) internal successors, (807), 330 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:07,698 INFO L276 IsEmpty]: Start isEmpty. Operand has 331 states, 330 states have (on average 2.4454545454545453) internal successors, (807), 330 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:07,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-18 03:01:07,708 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:01:07,709 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:01:07,710 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:01:07,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:01:07,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1680176795, now seen corresponding path program 1 times [2022-01-18 03:01:07,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:01:07,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541691857] [2022-01-18 03:01:07,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:01:07,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:01:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:01:07,897 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 03:01:07,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:01:07,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541691857] [2022-01-18 03:01:07,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541691857] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:01:07,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:01:07,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 03:01:07,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460272620] [2022-01-18 03:01:07,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:01:07,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 03:01:07,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:01:07,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 03:01:07,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 03:01:07,934 INFO L87 Difference]: Start difference. First operand has 331 states, 330 states have (on average 2.4454545454545453) internal successors, (807), 330 states have internal predecessors, (807), 0 states have call successors, (0), 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 40.5) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:07,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:01:07,990 INFO L93 Difference]: Finished difference Result 331 states and 738 transitions. [2022-01-18 03:01:07,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 03:01:07,993 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-01-18 03:01:07,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:01:08,001 INFO L225 Difference]: With dead ends: 331 [2022-01-18 03:01:08,002 INFO L226 Difference]: Without dead ends: 328 [2022-01-18 03:01:08,003 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 03:01:08,005 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:01:08,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 93 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:01:08,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-01-18 03:01:08,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2022-01-18 03:01:08,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 327 states have (on average 2.2477064220183487) internal successors, (735), 327 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:08,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 735 transitions. [2022-01-18 03:01:08,068 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 735 transitions. Word has length 81 [2022-01-18 03:01:08,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:01:08,068 INFO L470 AbstractCegarLoop]: Abstraction has 328 states and 735 transitions. [2022-01-18 03:01:08,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.5) internal successors, (81), 2 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:08,068 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 735 transitions. [2022-01-18 03:01:08,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-18 03:01:08,071 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:01:08,071 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:01:08,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 03:01:08,071 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:01:08,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:01:08,073 INFO L85 PathProgramCache]: Analyzing trace with hash -415887122, now seen corresponding path program 1 times [2022-01-18 03:01:08,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:01:08,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279612610] [2022-01-18 03:01:08,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:01:08,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:01:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:01:08,195 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 03:01:08,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:01:08,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279612610] [2022-01-18 03:01:08,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279612610] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:01:08,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:01:08,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 03:01:08,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542873021] [2022-01-18 03:01:08,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:01:08,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 03:01:08,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:01:08,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 03:01:08,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 03:01:08,198 INFO L87 Difference]: Start difference. First operand 328 states and 735 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:08,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:01:08,256 INFO L93 Difference]: Finished difference Result 551 states and 1322 transitions. [2022-01-18 03:01:08,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 03:01:08,256 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2022-01-18 03:01:08,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:01:08,260 INFO L225 Difference]: With dead ends: 551 [2022-01-18 03:01:08,260 INFO L226 Difference]: Without dead ends: 421 [2022-01-18 03:01:08,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:01:08,261 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 16 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:01:08,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 294 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:01:08,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-01-18 03:01:08,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 359. [2022-01-18 03:01:08,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 2.2849162011173183) internal successors, (818), 358 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:08,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 818 transitions. [2022-01-18 03:01:08,273 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 818 transitions. Word has length 83 [2022-01-18 03:01:08,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:01:08,273 INFO L470 AbstractCegarLoop]: Abstraction has 359 states and 818 transitions. [2022-01-18 03:01:08,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:08,274 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 818 transitions. [2022-01-18 03:01:08,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-01-18 03:01:08,275 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:01:08,276 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:01:08,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 03:01:08,276 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:01:08,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:01:08,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1146128612, now seen corresponding path program 1 times [2022-01-18 03:01:08,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:01:08,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376180964] [2022-01-18 03:01:08,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:01:08,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:01:08,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:01:08,338 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 03:01:08,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:01:08,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376180964] [2022-01-18 03:01:08,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376180964] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:01:08,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:01:08,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 03:01:08,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036525713] [2022-01-18 03:01:08,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:01:08,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 03:01:08,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:01:08,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 03:01:08,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:01:08,340 INFO L87 Difference]: Start difference. First operand 359 states and 818 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:08,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:01:08,353 INFO L93 Difference]: Finished difference Result 494 states and 1120 transitions. [2022-01-18 03:01:08,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 03:01:08,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2022-01-18 03:01:08,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:01:08,356 INFO L225 Difference]: With dead ends: 494 [2022-01-18 03:01:08,356 INFO L226 Difference]: Without dead ends: 413 [2022-01-18 03:01:08,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 03:01:08,360 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 15 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:01:08,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 131 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:01:08,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-01-18 03:01:08,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 413. [2022-01-18 03:01:08,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 2.283980582524272) internal successors, (941), 412 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:08,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 941 transitions. [2022-01-18 03:01:08,371 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 941 transitions. Word has length 86 [2022-01-18 03:01:08,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:01:08,371 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 941 transitions. [2022-01-18 03:01:08,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:08,371 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 941 transitions. [2022-01-18 03:01:08,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-18 03:01:08,372 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:01:08,373 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:01:08,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 03:01:08,373 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:01:08,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:01:08,374 INFO L85 PathProgramCache]: Analyzing trace with hash -1766674574, now seen corresponding path program 1 times [2022-01-18 03:01:08,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:01:08,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36615765] [2022-01-18 03:01:08,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:01:08,374 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:01:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:01:08,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 03:01:08,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:01:08,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36615765] [2022-01-18 03:01:08,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36615765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:01:08,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:01:08,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 03:01:08,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989061897] [2022-01-18 03:01:08,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:01:08,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 03:01:08,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:01:08,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 03:01:08,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:01:08,501 INFO L87 Difference]: Start difference. First operand 413 states and 941 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:08,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:01:08,571 INFO L93 Difference]: Finished difference Result 544 states and 1228 transitions. [2022-01-18 03:01:08,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 03:01:08,571 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2022-01-18 03:01:08,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:01:08,573 INFO L225 Difference]: With dead ends: 544 [2022-01-18 03:01:08,573 INFO L226 Difference]: Without dead ends: 481 [2022-01-18 03:01:08,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2022-01-18 03:01:08,574 INFO L933 BasicCegarLoop]: 82 mSDtfsCounter, 234 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:01:08,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 293 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:01:08,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2022-01-18 03:01:08,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 414. [2022-01-18 03:01:08,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 2.280871670702179) internal successors, (942), 413 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:08,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 942 transitions. [2022-01-18 03:01:08,583 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 942 transitions. Word has length 89 [2022-01-18 03:01:08,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:01:08,583 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 942 transitions. [2022-01-18 03:01:08,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:08,584 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 942 transitions. [2022-01-18 03:01:08,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 03:01:08,584 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:01:08,585 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, 1, 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 03:01:08,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 03:01:08,585 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:01:08,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:01:08,585 INFO L85 PathProgramCache]: Analyzing trace with hash 249833095, now seen corresponding path program 1 times [2022-01-18 03:01:08,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:01:08,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757092804] [2022-01-18 03:01:08,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:01:08,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:01:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:01:08,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 03:01:08,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:01:08,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757092804] [2022-01-18 03:01:08,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757092804] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:01:08,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302136606] [2022-01-18 03:01:08,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:01:08,837 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:01:08,837 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:01:08,855 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 03:01:08,883 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 03:01:08,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:01:08,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 26 conjunts are in the unsatisfiable core [2022-01-18 03:01:08,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:01:09,396 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-18 03:01:09,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 03:01:09,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:01:09,499 INFO L353 Elim1Store]: treesize reduction 14, result has 26.3 percent of original size [2022-01-18 03:01:09,499 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 13 [2022-01-18 03:01:09,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 03:01:09,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302136606] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:01:09,666 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:01:09,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 7] total 15 [2022-01-18 03:01:09,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700982620] [2022-01-18 03:01:09,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:01:09,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 03:01:09,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:01:09,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 03:01:09,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-01-18 03:01:09,669 INFO L87 Difference]: Start difference. First operand 414 states and 942 transitions. Second operand has 15 states, 15 states have (on average 10.866666666666667) internal successors, (163), 15 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:09,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:01:09,859 INFO L93 Difference]: Finished difference Result 799 states and 1958 transitions. [2022-01-18 03:01:09,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 03:01:09,859 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 10.866666666666667) internal successors, (163), 15 states have internal predecessors, (163), 0 states have call successors, (0), 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 96 [2022-01-18 03:01:09,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:01:09,863 INFO L225 Difference]: With dead ends: 799 [2022-01-18 03:01:09,863 INFO L226 Difference]: Without dead ends: 669 [2022-01-18 03:01:09,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2022-01-18 03:01:09,866 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 229 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:01:09,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 728 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:01:09,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-01-18 03:01:09,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 514. [2022-01-18 03:01:09,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 2.348927875243665) internal successors, (1205), 513 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:09,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1205 transitions. [2022-01-18 03:01:09,878 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1205 transitions. Word has length 96 [2022-01-18 03:01:09,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:01:09,879 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 1205 transitions. [2022-01-18 03:01:09,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.866666666666667) internal successors, (163), 15 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:09,880 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1205 transitions. [2022-01-18 03:01:09,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 03:01:09,881 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:01:09,881 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, 1, 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 03:01:09,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 03:01:10,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:01:10,086 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:01:10,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:01:10,087 INFO L85 PathProgramCache]: Analyzing trace with hash -2113726581, now seen corresponding path program 2 times [2022-01-18 03:01:10,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:01:10,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081167500] [2022-01-18 03:01:10,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:01:10,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:01:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:01:10,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 03:01:10,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:01:10,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081167500] [2022-01-18 03:01:10,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081167500] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:01:10,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352848663] [2022-01-18 03:01:10,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 03:01:10,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:01:10,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:01:10,353 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 03:01:10,354 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 03:01:10,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 03:01:10,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:01:10,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-18 03:01:10,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:01:10,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 03:01:10,916 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-01-18 03:01:10,977 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-18 03:01:11,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 03:01:11,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:01:11,059 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_89 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_89) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4))) 5)) is different from false [2022-01-18 03:01:11,077 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 03:01:11,077 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 45 [2022-01-18 03:01:11,081 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-01-18 03:01:11,519 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 03:01:11,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352848663] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:01:11,519 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:01:11,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 14] total 30 [2022-01-18 03:01:11,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747875230] [2022-01-18 03:01:11,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:01:11,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 03:01:11,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:01:11,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 03:01:11,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=696, Unknown=1, NotChecked=54, Total=870 [2022-01-18 03:01:11,521 INFO L87 Difference]: Start difference. First operand 514 states and 1205 transitions. Second operand has 30 states, 30 states have (on average 6.666666666666667) internal successors, (200), 30 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:11,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:01:11,825 INFO L93 Difference]: Finished difference Result 941 states and 2353 transitions. [2022-01-18 03:01:11,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 03:01:11,825 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.666666666666667) internal successors, (200), 30 states have internal predecessors, (200), 0 states have call successors, (0), 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 96 [2022-01-18 03:01:11,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:01:11,829 INFO L225 Difference]: With dead ends: 941 [2022-01-18 03:01:11,829 INFO L226 Difference]: Without dead ends: 811 [2022-01-18 03:01:11,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=277, Invalid=1366, Unknown=1, NotChecked=78, Total=1722 [2022-01-18 03:01:11,830 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 411 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 143 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:01:11,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 990 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 232 Invalid, 0 Unknown, 143 Unchecked, 0.1s Time] [2022-01-18 03:01:11,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2022-01-18 03:01:11,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 507. [2022-01-18 03:01:11,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 506 states have (on average 2.3537549407114624) internal successors, (1191), 506 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:11,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 1191 transitions. [2022-01-18 03:01:11,840 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 1191 transitions. Word has length 96 [2022-01-18 03:01:11,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:01:11,840 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 1191 transitions. [2022-01-18 03:01:11,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.666666666666667) internal successors, (200), 30 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:11,841 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 1191 transitions. [2022-01-18 03:01:11,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-18 03:01:11,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:01:11,842 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, 1, 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 03:01:11,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 03:01:12,055 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,SelfDestructingSolverStorable5 [2022-01-18 03:01:12,056 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:01:12,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:01:12,056 INFO L85 PathProgramCache]: Analyzing trace with hash -541859669, now seen corresponding path program 3 times [2022-01-18 03:01:12,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:01:12,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273082028] [2022-01-18 03:01:12,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:01:12,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:01:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:01:12,108 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 03:01:12,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:01:12,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273082028] [2022-01-18 03:01:12,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273082028] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:01:12,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919822251] [2022-01-18 03:01:12,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 03:01:12,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:01:12,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:01:12,109 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 03:01:12,110 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 03:01:12,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 03:01:12,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:01:12,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-18 03:01:12,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:01:12,683 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-01-18 03:01:12,684 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-01-18 03:01:12,735 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 03:01:12,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:01:12,916 INFO L353 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2022-01-18 03:01:12,917 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2022-01-18 03:01:13,484 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 03:01:13,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919822251] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:01:13,484 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:01:13,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 14, 14] total 25 [2022-01-18 03:01:13,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166199259] [2022-01-18 03:01:13,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:01:13,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 03:01:13,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:01:13,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 03:01:13,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2022-01-18 03:01:13,486 INFO L87 Difference]: Start difference. First operand 507 states and 1191 transitions. Second operand has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:13,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:01:13,819 INFO L93 Difference]: Finished difference Result 1645 states and 4033 transitions. [2022-01-18 03:01:13,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 03:01:13,829 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 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 99 [2022-01-18 03:01:13,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:01:13,834 INFO L225 Difference]: With dead ends: 1645 [2022-01-18 03:01:13,834 INFO L226 Difference]: Without dead ends: 1369 [2022-01-18 03:01:13,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=348, Invalid=1134, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 03:01:13,835 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 709 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:01:13,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [709 Valid, 1000 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 277 Invalid, 0 Unknown, 56 Unchecked, 0.1s Time] [2022-01-18 03:01:13,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2022-01-18 03:01:13,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 876. [2022-01-18 03:01:13,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 875 states have (on average 2.4525714285714284) internal successors, (2146), 875 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:13,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 2146 transitions. [2022-01-18 03:01:13,859 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 2146 transitions. Word has length 99 [2022-01-18 03:01:13,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:01:13,859 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 2146 transitions. [2022-01-18 03:01:13,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.04) internal successors, (251), 25 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:13,859 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 2146 transitions. [2022-01-18 03:01:13,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-18 03:01:13,861 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:01:13,861 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:01:13,881 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 03:01:14,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:01:14,065 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:01:14,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:01:14,065 INFO L85 PathProgramCache]: Analyzing trace with hash -176182363, now seen corresponding path program 4 times [2022-01-18 03:01:14,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:01:14,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841641345] [2022-01-18 03:01:14,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:01:14,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:01:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:01:14,161 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 03:01:14,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:01:14,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841641345] [2022-01-18 03:01:14,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841641345] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:01:14,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774603678] [2022-01-18 03:01:14,162 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 03:01:14,162 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:01:14,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:01:14,168 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 03:01:14,169 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 03:01:14,224 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 03:01:14,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:01:14,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-18 03:01:14,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:01:14,609 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 03:01:14,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:01:14,987 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 03:01:14,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774603678] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:01:14,987 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:01:14,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 25 [2022-01-18 03:01:14,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212051929] [2022-01-18 03:01:14,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:01:14,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 03:01:14,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:01:14,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 03:01:14,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=473, Unknown=0, NotChecked=0, Total=600 [2022-01-18 03:01:14,989 INFO L87 Difference]: Start difference. First operand 876 states and 2146 transitions. Second operand has 25 states, 25 states have (on average 8.56) internal successors, (214), 25 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:15,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:01:15,262 INFO L93 Difference]: Finished difference Result 956 states and 2300 transitions. [2022-01-18 03:01:15,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 03:01:15,263 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.56) internal successors, (214), 25 states have internal predecessors, (214), 0 states have call successors, (0), 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 102 [2022-01-18 03:01:15,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:01:15,266 INFO L225 Difference]: With dead ends: 956 [2022-01-18 03:01:15,266 INFO L226 Difference]: Without dead ends: 764 [2022-01-18 03:01:15,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=317, Invalid=943, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 03:01:15,267 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 681 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 681 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:01:15,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [681 Valid, 769 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:01:15,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2022-01-18 03:01:15,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 759. [2022-01-18 03:01:15,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 758 states have (on average 2.4775725593667546) internal successors, (1878), 758 states have internal predecessors, (1878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:15,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1878 transitions. [2022-01-18 03:01:15,279 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1878 transitions. Word has length 102 [2022-01-18 03:01:15,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:01:15,279 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 1878 transitions. [2022-01-18 03:01:15,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.56) internal successors, (214), 25 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:15,280 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1878 transitions. [2022-01-18 03:01:15,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-18 03:01:15,281 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:01:15,281 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:01:15,304 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 03:01:15,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:01:15,498 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:01:15,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:01:15,498 INFO L85 PathProgramCache]: Analyzing trace with hash 453195598, now seen corresponding path program 5 times [2022-01-18 03:01:15,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:01:15,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199785559] [2022-01-18 03:01:15,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:01:15,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:01:15,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:01:15,678 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 03:01:15,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:01:15,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199785559] [2022-01-18 03:01:15,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199785559] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:01:15,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800240042] [2022-01-18 03:01:15,678 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 03:01:15,678 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:01:15,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:01:15,679 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 03:01:15,680 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 03:01:15,751 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 03:01:15,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:01:15,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-18 03:01:15,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:01:16,196 INFO L353 Elim1Store]: treesize reduction 17, result has 15.0 percent of original size [2022-01-18 03:01:16,197 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 10 [2022-01-18 03:01:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 03:01:16,224 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:01:16,315 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-18 03:01:16,315 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-01-18 03:01:16,589 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 03:01:16,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800240042] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:01:16,590 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:01:16,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 10] total 26 [2022-01-18 03:01:16,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927047287] [2022-01-18 03:01:16,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:01:16,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 03:01:16,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:01:16,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 03:01:16,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2022-01-18 03:01:16,591 INFO L87 Difference]: Start difference. First operand 759 states and 1878 transitions. Second operand has 26 states, 26 states have (on average 9.73076923076923) internal successors, (253), 26 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:17,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:01:17,231 INFO L93 Difference]: Finished difference Result 2366 states and 6050 transitions. [2022-01-18 03:01:17,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 03:01:17,231 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.73076923076923) internal successors, (253), 26 states have internal predecessors, (253), 0 states have call successors, (0), 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 109 [2022-01-18 03:01:17,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:01:17,237 INFO L225 Difference]: With dead ends: 2366 [2022-01-18 03:01:17,237 INFO L226 Difference]: Without dead ends: 1564 [2022-01-18 03:01:17,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 961 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=447, Invalid=2975, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 03:01:17,238 INFO L933 BasicCegarLoop]: 149 mSDtfsCounter, 716 mSDsluCounter, 1772 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:01:17,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [716 Valid, 1788 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 553 Invalid, 0 Unknown, 55 Unchecked, 0.2s Time] [2022-01-18 03:01:17,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1564 states. [2022-01-18 03:01:17,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1564 to 668. [2022-01-18 03:01:17,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 667 states have (on average 2.3928035982008997) internal successors, (1596), 667 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:17,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 1596 transitions. [2022-01-18 03:01:17,254 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 1596 transitions. Word has length 109 [2022-01-18 03:01:17,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:01:17,254 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 1596 transitions. [2022-01-18 03:01:17,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.73076923076923) internal successors, (253), 26 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:17,255 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 1596 transitions. [2022-01-18 03:01:17,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-18 03:01:17,256 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:01:17,256 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:01:17,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 03:01:17,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:01:17,473 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:01:17,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:01:17,473 INFO L85 PathProgramCache]: Analyzing trace with hash 269033586, now seen corresponding path program 6 times [2022-01-18 03:01:17,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:01:17,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991034721] [2022-01-18 03:01:17,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:01:17,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:01:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:01:17,807 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 03:01:17,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:01:17,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991034721] [2022-01-18 03:01:17,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991034721] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:01:17,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829897235] [2022-01-18 03:01:17,807 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 03:01:17,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:01:17,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:01:17,809 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 03:01:17,810 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 03:01:17,876 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 03:01:17,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:01:17,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 35 conjunts are in the unsatisfiable core [2022-01-18 03:01:17,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:01:18,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 03:01:18,393 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-18 03:01:18,461 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-18 03:01:18,487 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 03:01:18,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:01:18,560 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_194 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_194) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 4)))) is different from false [2022-01-18 03:01:18,574 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 03:01:18,575 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2022-01-18 03:01:18,579 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-18 03:01:18,919 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 03:01:18,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829897235] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:01:18,919 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:01:18,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 16] total 39 [2022-01-18 03:01:18,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633855359] [2022-01-18 03:01:18,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:01:18,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 03:01:18,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:01:18,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 03:01:18,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1260, Unknown=1, NotChecked=72, Total=1482 [2022-01-18 03:01:18,921 INFO L87 Difference]: Start difference. First operand 668 states and 1596 transitions. Second operand has 39 states, 39 states have (on average 6.153846153846154) internal successors, (240), 39 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:19,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:01:19,661 INFO L93 Difference]: Finished difference Result 1347 states and 3410 transitions. [2022-01-18 03:01:19,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 03:01:19,661 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 6.153846153846154) internal successors, (240), 39 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-01-18 03:01:19,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:01:19,666 INFO L225 Difference]: With dead ends: 1347 [2022-01-18 03:01:19,666 INFO L226 Difference]: Without dead ends: 1217 [2022-01-18 03:01:19,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 197 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 813 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=382, Invalid=2813, Unknown=1, NotChecked=110, Total=3306 [2022-01-18 03:01:19,667 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 650 mSDsluCounter, 1727 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 153 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:01:19,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [650 Valid, 1748 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 544 Invalid, 0 Unknown, 153 Unchecked, 0.2s Time] [2022-01-18 03:01:19,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2022-01-18 03:01:19,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 661. [2022-01-18 03:01:19,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 660 states have (on average 2.396969696969697) internal successors, (1582), 660 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:19,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 1582 transitions. [2022-01-18 03:01:19,683 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 1582 transitions. Word has length 109 [2022-01-18 03:01:19,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:01:19,683 INFO L470 AbstractCegarLoop]: Abstraction has 661 states and 1582 transitions. [2022-01-18 03:01:19,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 6.153846153846154) internal successors, (240), 39 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:19,684 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 1582 transitions. [2022-01-18 03:01:19,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-18 03:01:19,685 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:01:19,685 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:01:19,713 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 03:01:19,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:01:19,892 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:01:19,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:01:19,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1926579844, now seen corresponding path program 7 times [2022-01-18 03:01:19,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:01:19,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431796692] [2022-01-18 03:01:19,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:01:19,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:01:19,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:01:19,935 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 03:01:19,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:01:19,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431796692] [2022-01-18 03:01:19,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431796692] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:01:19,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359009938] [2022-01-18 03:01:19,936 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 03:01:19,936 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:01:19,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:01:19,937 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 03:01:19,938 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 03:01:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:01:20,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 03:01:20,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:01:20,172 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 03:01:20,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:01:20,324 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-18 03:01:20,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359009938] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:01:20,324 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:01:20,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 6 [2022-01-18 03:01:20,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955180764] [2022-01-18 03:01:20,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:01:20,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 03:01:20,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:01:20,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 03:01:20,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-18 03:01:20,325 INFO L87 Difference]: Start difference. First operand 661 states and 1582 transitions. Second operand has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 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 03:01:20,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:01:20,367 INFO L93 Difference]: Finished difference Result 1753 states and 4401 transitions. [2022-01-18 03:01:20,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 03:01:20,368 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 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 112 [2022-01-18 03:01:20,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:01:20,373 INFO L225 Difference]: With dead ends: 1753 [2022-01-18 03:01:20,374 INFO L226 Difference]: Without dead ends: 1558 [2022-01-18 03:01:20,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-01-18 03:01:20,374 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 233 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:01:20,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 251 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:01:20,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1558 states. [2022-01-18 03:01:20,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1558 to 1159. [2022-01-18 03:01:20,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 1158 states have (on average 2.5673575129533677) internal successors, (2973), 1158 states have internal predecessors, (2973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:20,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 2973 transitions. [2022-01-18 03:01:20,410 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 2973 transitions. Word has length 112 [2022-01-18 03:01:20,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:01:20,410 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 2973 transitions. [2022-01-18 03:01:20,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 27.333333333333332) internal successors, (164), 6 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 03:01:20,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 2973 transitions. [2022-01-18 03:01:20,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-18 03:01:20,414 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:01:20,414 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:01:20,431 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 03:01:20,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:01:20,628 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:01:20,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:01:20,628 INFO L85 PathProgramCache]: Analyzing trace with hash 856762834, now seen corresponding path program 8 times [2022-01-18 03:01:20,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:01:20,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567433668] [2022-01-18 03:01:20,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:01:20,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:01:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:01:20,778 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-18 03:01:20,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:01:20,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567433668] [2022-01-18 03:01:20,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567433668] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:01:20,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151637298] [2022-01-18 03:01:20,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 03:01:20,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:01:20,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:01:20,784 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 03:01:20,785 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 03:01:20,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 03:01:20,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:01:20,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 03:01:20,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:01:21,364 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-18 03:01:21,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:01:21,875 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-18 03:01:21,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151637298] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:01:21,876 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:01:21,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 37 [2022-01-18 03:01:21,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329953478] [2022-01-18 03:01:21,876 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:01:21,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-01-18 03:01:21,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:01:21,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-01-18 03:01:21,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=1049, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 03:01:21,879 INFO L87 Difference]: Start difference. First operand 1159 states and 2973 transitions. Second operand has 37 states, 37 states have (on average 6.864864864864865) internal successors, (254), 37 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:22,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:01:22,385 INFO L93 Difference]: Finished difference Result 1723 states and 4315 transitions. [2022-01-18 03:01:22,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 03:01:22,385 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 6.864864864864865) internal successors, (254), 37 states have internal predecessors, (254), 0 states have call successors, (0), 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 115 [2022-01-18 03:01:22,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:01:22,390 INFO L225 Difference]: With dead ends: 1723 [2022-01-18 03:01:22,390 INFO L226 Difference]: Without dead ends: 1372 [2022-01-18 03:01:22,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1010 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=697, Invalid=2273, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 03:01:22,391 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 1042 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:01:22,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1042 Valid, 1077 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 03:01:22,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2022-01-18 03:01:22,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 1166. [2022-01-18 03:01:22,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1165 states have (on average 2.5579399141630903) internal successors, (2980), 1165 states have internal predecessors, (2980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:22,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 2980 transitions. [2022-01-18 03:01:22,412 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 2980 transitions. Word has length 115 [2022-01-18 03:01:22,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:01:22,412 INFO L470 AbstractCegarLoop]: Abstraction has 1166 states and 2980 transitions. [2022-01-18 03:01:22,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 6.864864864864865) internal successors, (254), 37 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:22,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 2980 transitions. [2022-01-18 03:01:22,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-18 03:01:22,415 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:01:22,415 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:01:22,433 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 03:01:22,628 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,SelfDestructingSolverStorable11 [2022-01-18 03:01:22,628 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:01:22,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:01:22,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1114783911, now seen corresponding path program 9 times [2022-01-18 03:01:22,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:01:22,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438267417] [2022-01-18 03:01:22,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:01:22,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:01:22,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:01:22,966 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:01:22,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:01:22,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438267417] [2022-01-18 03:01:22,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438267417] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:01:22,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966492778] [2022-01-18 03:01:22,967 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 03:01:22,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:01:22,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:01:22,969 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 03:01:22,970 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 03:01:23,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 03:01:23,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:01:23,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-18 03:01:23,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:01:23,759 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 03:01:24,006 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 03:01:24,069 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 03:01:24,528 INFO L353 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2022-01-18 03:01:24,528 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-01-18 03:01:24,560 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 5 proven. 38 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 03:01:24,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:01:26,329 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 03:01:26,329 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 51 [2022-01-18 03:01:26,338 INFO L353 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2022-01-18 03:01:26,339 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 324 treesize of output 297 [2022-01-18 03:01:26,353 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-01-18 03:01:26,354 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 286 treesize of output 226 [2022-01-18 03:01:26,364 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-01-18 03:01:26,364 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 226 treesize of output 196 [2022-01-18 03:01:26,854 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 40 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-18 03:01:26,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966492778] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:01:26,854 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:01:26,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 28, 25] total 64 [2022-01-18 03:01:26,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111825815] [2022-01-18 03:01:26,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:01:26,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-18 03:01:26,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:01:26,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-18 03:01:26,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=456, Invalid=3524, Unknown=52, NotChecked=0, Total=4032 [2022-01-18 03:01:26,857 INFO L87 Difference]: Start difference. First operand 1166 states and 2980 transitions. Second operand has 64 states, 64 states have (on average 4.609375) internal successors, (295), 64 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:29,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:01:29,504 INFO L93 Difference]: Finished difference Result 6080 states and 15771 transitions. [2022-01-18 03:01:29,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-18 03:01:29,505 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.609375) internal successors, (295), 64 states have internal predecessors, (295), 0 states have call successors, (0), 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 122 [2022-01-18 03:01:29,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:01:29,524 INFO L225 Difference]: With dead ends: 6080 [2022-01-18 03:01:29,524 INFO L226 Difference]: Without dead ends: 5474 [2022-01-18 03:01:29,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3702 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1877, Invalid=11181, Unknown=52, NotChecked=0, Total=13110 [2022-01-18 03:01:29,528 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 2121 mSDsluCounter, 5975 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2121 SdHoareTripleChecker+Valid, 5722 SdHoareTripleChecker+Invalid, 2013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 991 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:01:29,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2121 Valid, 5722 Invalid, 2013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 963 Invalid, 0 Unknown, 991 Unchecked, 0.4s Time] [2022-01-18 03:01:29,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5474 states. [2022-01-18 03:01:29,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5474 to 3238. [2022-01-18 03:01:29,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3238 states, 3237 states have (on average 2.696941612604263) internal successors, (8730), 3237 states have internal predecessors, (8730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:29,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3238 states to 3238 states and 8730 transitions. [2022-01-18 03:01:29,662 INFO L78 Accepts]: Start accepts. Automaton has 3238 states and 8730 transitions. Word has length 122 [2022-01-18 03:01:29,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:01:29,663 INFO L470 AbstractCegarLoop]: Abstraction has 3238 states and 8730 transitions. [2022-01-18 03:01:29,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.609375) internal successors, (295), 64 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:29,663 INFO L276 IsEmpty]: Start isEmpty. Operand 3238 states and 8730 transitions. [2022-01-18 03:01:29,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-18 03:01:29,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:01:29,669 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:01:29,691 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 03:01:29,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-18 03:01:29,879 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:01:29,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:01:29,880 INFO L85 PathProgramCache]: Analyzing trace with hash -776672213, now seen corresponding path program 10 times [2022-01-18 03:01:29,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:01:29,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094463317] [2022-01-18 03:01:29,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:01:29,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:01:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:01:30,163 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:01:30,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:01:30,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094463317] [2022-01-18 03:01:30,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094463317] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:01:30,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497388193] [2022-01-18 03:01:30,166 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 03:01:30,166 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:01:30,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:01:30,167 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 03:01:30,168 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 03:01:30,256 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 03:01:30,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:01:30,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 44 conjunts are in the unsatisfiable core [2022-01-18 03:01:30,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:01:30,787 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-18 03:01:30,808 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 03:01:30,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:01:30,913 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-18 03:01:30,914 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-01-18 03:01:31,142 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 03:01:31,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497388193] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:01:31,142 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:01:31,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 11] total 30 [2022-01-18 03:01:31,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432718912] [2022-01-18 03:01:31,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:01:31,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-01-18 03:01:31,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:01:31,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-01-18 03:01:31,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2022-01-18 03:01:31,144 INFO L87 Difference]: Start difference. First operand 3238 states and 8730 transitions. Second operand has 30 states, 30 states have (on average 7.333333333333333) internal successors, (220), 30 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:32,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:01:32,580 INFO L93 Difference]: Finished difference Result 12165 states and 32962 transitions. [2022-01-18 03:01:32,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-18 03:01:32,581 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 7.333333333333333) internal successors, (220), 30 states have internal predecessors, (220), 0 states have call successors, (0), 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 122 [2022-01-18 03:01:32,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:01:32,605 INFO L225 Difference]: With dead ends: 12165 [2022-01-18 03:01:32,605 INFO L226 Difference]: Without dead ends: 9885 [2022-01-18 03:01:32,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 223 SyntacticMatches, 14 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3854 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=987, Invalid=9113, Unknown=0, NotChecked=0, Total=10100 [2022-01-18 03:01:32,608 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 1575 mSDsluCounter, 3448 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 3339 SdHoareTripleChecker+Invalid, 1433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:01:32,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1575 Valid, 3339 Invalid, 1433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:01:32,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9885 states. [2022-01-18 03:01:32,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9885 to 2664. [2022-01-18 03:01:32,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2664 states, 2663 states have (on average 2.661659782200526) internal successors, (7088), 2663 states have internal predecessors, (7088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:32,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2664 states to 2664 states and 7088 transitions. [2022-01-18 03:01:32,695 INFO L78 Accepts]: Start accepts. Automaton has 2664 states and 7088 transitions. Word has length 122 [2022-01-18 03:01:32,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:01:32,696 INFO L470 AbstractCegarLoop]: Abstraction has 2664 states and 7088 transitions. [2022-01-18 03:01:32,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 7.333333333333333) internal successors, (220), 30 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:32,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2664 states and 7088 transitions. [2022-01-18 03:01:32,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-01-18 03:01:32,701 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:01:32,701 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:01:32,733 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 03:01:32,915 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,SelfDestructingSolverStorable13 [2022-01-18 03:01:32,915 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:01:32,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:01:32,916 INFO L85 PathProgramCache]: Analyzing trace with hash 328572843, now seen corresponding path program 11 times [2022-01-18 03:01:32,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:01:32,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416226058] [2022-01-18 03:01:32,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:01:32,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:01:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:01:33,315 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:01:33,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:01:33,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416226058] [2022-01-18 03:01:33,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416226058] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:01:33,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442015936] [2022-01-18 03:01:33,315 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 03:01:33,315 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:01:33,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:01:33,316 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 03:01:33,317 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 03:01:33,414 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 03:01:33,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:01:33,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 38 conjunts are in the unsatisfiable core [2022-01-18 03:01:33,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:01:33,452 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 03:01:33,535 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 03:01:33,536 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 03:01:33,798 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-18 03:01:33,861 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 03:01:33,886 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 03:01:33,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:01:33,935 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_352 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_352) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 8)) 5)) is different from false [2022-01-18 03:01:33,943 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 03:01:33,943 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2022-01-18 03:01:33,946 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-18 03:01:34,340 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-18 03:01:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 03:01:34,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [442015936] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:01:34,358 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:01:34,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 18] total 39 [2022-01-18 03:01:34,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350077294] [2022-01-18 03:01:34,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:01:34,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-01-18 03:01:34,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:01:34,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-01-18 03:01:34,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1265, Unknown=1, NotChecked=72, Total=1482 [2022-01-18 03:01:34,359 INFO L87 Difference]: Start difference. First operand 2664 states and 7088 transitions. Second operand has 39 states, 39 states have (on average 5.794871794871795) internal successors, (226), 39 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:35,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:01:35,371 INFO L93 Difference]: Finished difference Result 5107 states and 13705 transitions. [2022-01-18 03:01:35,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 03:01:35,372 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 5.794871794871795) internal successors, (226), 39 states have internal predecessors, (226), 0 states have call successors, (0), 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 122 [2022-01-18 03:01:35,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:01:35,388 INFO L225 Difference]: With dead ends: 5107 [2022-01-18 03:01:35,388 INFO L226 Difference]: Without dead ends: 4977 [2022-01-18 03:01:35,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 229 SyntacticMatches, 2 SemanticMatches, 71 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 1480 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=574, Invalid=4541, Unknown=1, NotChecked=140, Total=5256 [2022-01-18 03:01:35,391 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 974 mSDsluCounter, 2022 mSDsCounter, 0 mSdLazyCounter, 810 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 2019 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 250 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 03:01:35,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [974 Valid, 2019 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 810 Invalid, 0 Unknown, 250 Unchecked, 0.3s Time] [2022-01-18 03:01:35,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4977 states. [2022-01-18 03:01:35,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4977 to 2578. [2022-01-18 03:01:35,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2578 states, 2577 states have (on average 2.6534730306558014) internal successors, (6838), 2577 states have internal predecessors, (6838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:35,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2578 states to 2578 states and 6838 transitions. [2022-01-18 03:01:35,463 INFO L78 Accepts]: Start accepts. Automaton has 2578 states and 6838 transitions. Word has length 122 [2022-01-18 03:01:35,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:01:35,463 INFO L470 AbstractCegarLoop]: Abstraction has 2578 states and 6838 transitions. [2022-01-18 03:01:35,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 5.794871794871795) internal successors, (226), 39 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:35,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2578 states and 6838 transitions. [2022-01-18 03:01:35,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-18 03:01:35,469 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:01:35,469 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:01:35,488 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 03:01:35,675 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,SelfDestructingSolverStorable14 [2022-01-18 03:01:35,675 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:01:35,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:01:35,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1227413097, now seen corresponding path program 12 times [2022-01-18 03:01:35,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:01:35,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917554872] [2022-01-18 03:01:35,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:01:35,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:01:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:01:35,738 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 03:01:35,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:01:35,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917554872] [2022-01-18 03:01:35,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917554872] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:01:35,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414347413] [2022-01-18 03:01:35,739 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 03:01:35,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:01:35,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:01:35,740 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 03:01:35,741 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 03:01:35,888 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 03:01:35,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:01:35,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-18 03:01:35,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:01:36,082 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 03:01:36,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:01:36,282 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-18 03:01:36,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414347413] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:01:36,282 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:01:36,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 7 [2022-01-18 03:01:36,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071940954] [2022-01-18 03:01:36,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:01:36,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:01:36,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:01:36,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:01:36,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:01:36,283 INFO L87 Difference]: Start difference. First operand 2578 states and 6838 transitions. Second operand has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:36,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:01:36,322 INFO L93 Difference]: Finished difference Result 6323 states and 16973 transitions. [2022-01-18 03:01:36,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 03:01:36,322 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 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 125 [2022-01-18 03:01:36,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:01:36,334 INFO L225 Difference]: With dead ends: 6323 [2022-01-18 03:01:36,334 INFO L226 Difference]: Without dead ends: 5639 [2022-01-18 03:01:36,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:01:36,335 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 380 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:01:36,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 259 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:01:36,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5639 states. [2022-01-18 03:01:36,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5639 to 4460. [2022-01-18 03:01:36,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4460 states, 4459 states have (on average 2.7311056290648126) internal successors, (12178), 4459 states have internal predecessors, (12178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:36,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4460 states to 4460 states and 12178 transitions. [2022-01-18 03:01:36,418 INFO L78 Accepts]: Start accepts. Automaton has 4460 states and 12178 transitions. Word has length 125 [2022-01-18 03:01:36,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:01:36,419 INFO L470 AbstractCegarLoop]: Abstraction has 4460 states and 12178 transitions. [2022-01-18 03:01:36,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.285714285714285) internal successors, (170), 7 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:36,419 INFO L276 IsEmpty]: Start isEmpty. Operand 4460 states and 12178 transitions. [2022-01-18 03:01:36,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-18 03:01:36,427 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:01:36,427 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:01:36,445 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 03:01:36,644 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,SelfDestructingSolverStorable15 [2022-01-18 03:01:36,644 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:01:36,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:01:36,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1083522961, now seen corresponding path program 13 times [2022-01-18 03:01:36,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:01:36,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683218067] [2022-01-18 03:01:36,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:01:36,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:01:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:01:36,815 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-18 03:01:36,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:01:36,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683218067] [2022-01-18 03:01:36,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683218067] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:01:36,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613289147] [2022-01-18 03:01:36,815 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 03:01:36,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:01:36,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:01:36,816 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:01:36,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 03:01:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:01:36,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 03:01:36,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:01:37,447 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-18 03:01:37,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:01:37,958 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 13 proven. 33 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-18 03:01:37,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613289147] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:01:37,958 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:01:37,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-01-18 03:01:37,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100741899] [2022-01-18 03:01:37,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:01:37,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 03:01:37,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:01:37,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 03:01:37,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=1655, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 03:01:37,969 INFO L87 Difference]: Start difference. First operand 4460 states and 12178 transitions. Second operand has 46 states, 46 states have (on average 6.173913043478261) internal successors, (284), 46 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:38,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:01:38,688 INFO L93 Difference]: Finished difference Result 3072 states and 7735 transitions. [2022-01-18 03:01:38,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 03:01:38,688 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 6.173913043478261) internal successors, (284), 46 states have internal predecessors, (284), 0 states have call successors, (0), 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 128 [2022-01-18 03:01:38,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:01:38,692 INFO L225 Difference]: With dead ends: 3072 [2022-01-18 03:01:38,693 INFO L226 Difference]: Without dead ends: 1908 [2022-01-18 03:01:38,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1781 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1088, Invalid=3882, Unknown=0, NotChecked=0, Total=4970 [2022-01-18 03:01:38,695 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 1230 mSDsluCounter, 1633 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:01:38,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1230 Valid, 1654 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 03:01:38,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2022-01-18 03:01:38,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1666. [2022-01-18 03:01:38,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1666 states, 1665 states have (on average 2.601201201201201) internal successors, (4331), 1665 states have internal predecessors, (4331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:38,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1666 states to 1666 states and 4331 transitions. [2022-01-18 03:01:38,723 INFO L78 Accepts]: Start accepts. Automaton has 1666 states and 4331 transitions. Word has length 128 [2022-01-18 03:01:38,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:01:38,723 INFO L470 AbstractCegarLoop]: Abstraction has 1666 states and 4331 transitions. [2022-01-18 03:01:38,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 6.173913043478261) internal successors, (284), 46 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:38,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1666 states and 4331 transitions. [2022-01-18 03:01:38,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-18 03:01:38,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:01:38,727 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:38,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-01-18 03:01:38,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-18 03:01:38,941 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:01:38,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:01:38,941 INFO L85 PathProgramCache]: Analyzing trace with hash 552932526, now seen corresponding path program 14 times [2022-01-18 03:01:38,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:01:38,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74553908] [2022-01-18 03:01:38,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:01:38,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:01:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:01:39,289 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:01:39,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:01:39,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74553908] [2022-01-18 03:01:39,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74553908] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:01:39,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227928744] [2022-01-18 03:01:39,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 03:01:39,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:01:39,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:01:39,291 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:01:39,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 03:01:39,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 03:01:39,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:01:39,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 48 conjunts are in the unsatisfiable core [2022-01-18 03:01:39,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:01:39,919 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-18 03:01:39,943 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 03:01:39,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:01:40,059 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-18 03:01:40,060 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-01-18 03:01:40,384 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 03:01:40,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227928744] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:01:40,384 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:01:40,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 20, 13] total 47 [2022-01-18 03:01:40,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330291165] [2022-01-18 03:01:40,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:01:40,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 03:01:40,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:01:40,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 03:01:40,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1976, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 03:01:40,385 INFO L87 Difference]: Start difference. First operand 1666 states and 4331 transitions. Second operand has 47 states, 47 states have (on average 6.276595744680851) internal successors, (295), 47 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:42,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:01:42,888 INFO L93 Difference]: Finished difference Result 11428 states and 30191 transitions. [2022-01-18 03:01:42,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2022-01-18 03:01:42,889 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 6.276595744680851) internal successors, (295), 47 states have internal predecessors, (295), 0 states have call successors, (0), 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 135 [2022-01-18 03:01:42,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:01:42,904 INFO L225 Difference]: With dead ends: 11428 [2022-01-18 03:01:42,904 INFO L226 Difference]: Without dead ends: 7904 [2022-01-18 03:01:42,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 240 SyntacticMatches, 10 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9276 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1756, Invalid=22114, Unknown=0, NotChecked=0, Total=23870 [2022-01-18 03:01:42,908 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 2637 mSDsluCounter, 5635 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2637 SdHoareTripleChecker+Valid, 5401 SdHoareTripleChecker+Invalid, 2415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:01:42,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2637 Valid, 5401 Invalid, 2415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 03:01:42,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7904 states. [2022-01-18 03:01:42,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7904 to 976. [2022-01-18 03:01:42,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 975 states have (on average 2.438974358974359) internal successors, (2378), 975 states have internal predecessors, (2378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:42,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 2378 transitions. [2022-01-18 03:01:42,961 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 2378 transitions. Word has length 135 [2022-01-18 03:01:42,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:01:42,961 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 2378 transitions. [2022-01-18 03:01:42,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 6.276595744680851) internal successors, (295), 47 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:42,961 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 2378 transitions. [2022-01-18 03:01:42,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-18 03:01:42,963 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:01:42,963 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:42,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 03:01:43,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:01:43,198 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:01:43,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:01:43,198 INFO L85 PathProgramCache]: Analyzing trace with hash 532157394, now seen corresponding path program 15 times [2022-01-18 03:01:43,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:01:43,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605350687] [2022-01-18 03:01:43,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:01:43,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:01:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:01:43,678 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:01:43,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:01:43,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605350687] [2022-01-18 03:01:43,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605350687] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:01:43,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856501500] [2022-01-18 03:01:43,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 03:01:43,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:01:43,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:01:43,680 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:01:43,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 03:01:44,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 03:01:44,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:01:44,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 60 conjunts are in the unsatisfiable core [2022-01-18 03:01:44,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:01:44,904 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 03:01:45,207 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 03:01:45,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 03:01:45,384 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-01-18 03:01:45,930 INFO L353 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2022-01-18 03:01:45,931 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-01-18 03:01:45,959 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 63 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-18 03:01:45,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:01:47,772 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 03:01:47,772 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 48 [2022-01-18 03:01:47,780 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 03:01:47,781 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 184 treesize of output 176 [2022-01-18 03:01:47,790 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 03:01:47,790 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 157 treesize of output 155 [2022-01-18 03:01:47,795 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 94 [2022-01-18 03:01:48,955 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 63 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-18 03:01:48,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856501500] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:01:48,955 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:01:48,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 31, 31] total 79 [2022-01-18 03:01:48,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054309834] [2022-01-18 03:01:48,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:01:48,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-01-18 03:01:48,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:01:48,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-01-18 03:01:48,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=525, Invalid=5617, Unknown=20, NotChecked=0, Total=6162 [2022-01-18 03:01:48,957 INFO L87 Difference]: Start difference. First operand 976 states and 2378 transitions. Second operand has 79 states, 79 states have (on average 4.10126582278481) internal successors, (324), 79 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:59,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:01:59,410 INFO L93 Difference]: Finished difference Result 7429 states and 19901 transitions. [2022-01-18 03:01:59,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-01-18 03:01:59,411 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 4.10126582278481) internal successors, (324), 79 states have internal predecessors, (324), 0 states have call successors, (0), 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 135 [2022-01-18 03:01:59,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:01:59,430 INFO L225 Difference]: With dead ends: 7429 [2022-01-18 03:01:59,430 INFO L226 Difference]: Without dead ends: 7191 [2022-01-18 03:01:59,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7296 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=2275, Invalid=20048, Unknown=27, NotChecked=0, Total=22350 [2022-01-18 03:01:59,433 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 3094 mSDsluCounter, 8790 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3094 SdHoareTripleChecker+Valid, 8653 SdHoareTripleChecker+Invalid, 2935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1026 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:01:59,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3094 Valid, 8653 Invalid, 2935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 1720 Invalid, 0 Unknown, 1026 Unchecked, 0.6s Time] [2022-01-18 03:01:59,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7191 states. [2022-01-18 03:01:59,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7191 to 3103. [2022-01-18 03:01:59,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3103 states, 3102 states have (on average 2.7195357833655707) internal successors, (8436), 3102 states have internal predecessors, (8436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:59,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3103 states to 3103 states and 8436 transitions. [2022-01-18 03:01:59,510 INFO L78 Accepts]: Start accepts. Automaton has 3103 states and 8436 transitions. Word has length 135 [2022-01-18 03:01:59,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:01:59,510 INFO L470 AbstractCegarLoop]: Abstraction has 3103 states and 8436 transitions. [2022-01-18 03:01:59,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 4.10126582278481) internal successors, (324), 79 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:01:59,511 INFO L276 IsEmpty]: Start isEmpty. Operand 3103 states and 8436 transitions. [2022-01-18 03:01:59,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-18 03:01:59,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:01:59,517 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:59,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-18 03:01:59,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:01:59,736 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:01:59,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:01:59,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1359298730, now seen corresponding path program 16 times [2022-01-18 03:01:59,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:01:59,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119934022] [2022-01-18 03:01:59,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:01:59,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:01:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:02:00,222 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:02:00,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:02:00,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119934022] [2022-01-18 03:02:00,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119934022] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:02:00,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888915818] [2022-01-18 03:02:00,223 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 03:02:00,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:02:00,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:02:00,224 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:02:00,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 03:02:00,315 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 03:02:00,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:02:00,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 66 conjunts are in the unsatisfiable core [2022-01-18 03:02:00,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:02:00,355 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 03:02:00,501 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 03:02:00,501 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 03:02:00,994 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-01-18 03:02:01,160 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-18 03:02:01,182 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 03:02:01,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:02:01,303 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_530 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_530) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 12)))) is different from false [2022-01-18 03:02:01,319 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 03:02:01,319 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2022-01-18 03:02:01,322 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-18 03:02:01,903 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-18 03:02:01,940 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 03:02:01,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888915818] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:02:01,940 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:02:01,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 20] total 47 [2022-01-18 03:02:01,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600465694] [2022-01-18 03:02:01,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:02:01,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 03:02:01,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:02:01,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 03:02:01,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1896, Unknown=1, NotChecked=88, Total=2162 [2022-01-18 03:02:01,942 INFO L87 Difference]: Start difference. First operand 3103 states and 8436 transitions. Second operand has 47 states, 47 states have (on average 5.808510638297872) internal successors, (273), 47 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:03,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:02:03,656 INFO L93 Difference]: Finished difference Result 7081 states and 19583 transitions. [2022-01-18 03:02:03,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 03:02:03,657 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 5.808510638297872) internal successors, (273), 47 states have internal predecessors, (273), 0 states have call successors, (0), 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 135 [2022-01-18 03:02:03,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:02:03,669 INFO L225 Difference]: With dead ends: 7081 [2022-01-18 03:02:03,670 INFO L226 Difference]: Without dead ends: 6935 [2022-01-18 03:02:03,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 249 SyntacticMatches, 5 SemanticMatches, 93 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 2368 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=792, Invalid=7953, Unknown=1, NotChecked=184, Total=8930 [2022-01-18 03:02:03,671 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 1421 mSDsluCounter, 4076 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 4001 SdHoareTripleChecker+Invalid, 2234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 413 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:02:03,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1421 Valid, 4001 Invalid, 2234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1724 Invalid, 0 Unknown, 413 Unchecked, 0.6s Time] [2022-01-18 03:02:03,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6935 states. [2022-01-18 03:02:03,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6935 to 2887. [2022-01-18 03:02:03,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2887 states, 2886 states have (on average 2.684338184338184) internal successors, (7747), 2886 states have internal predecessors, (7747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:03,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2887 states to 2887 states and 7747 transitions. [2022-01-18 03:02:03,740 INFO L78 Accepts]: Start accepts. Automaton has 2887 states and 7747 transitions. Word has length 135 [2022-01-18 03:02:03,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:02:03,740 INFO L470 AbstractCegarLoop]: Abstraction has 2887 states and 7747 transitions. [2022-01-18 03:02:03,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 5.808510638297872) internal successors, (273), 47 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:03,740 INFO L276 IsEmpty]: Start isEmpty. Operand 2887 states and 7747 transitions. [2022-01-18 03:02:03,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-01-18 03:02:03,745 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:02:03,745 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:02:03,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-18 03:02:03,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:02:03,959 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:02:03,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:02:03,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1854471120, now seen corresponding path program 17 times [2022-01-18 03:02:03,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:02:03,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708558345] [2022-01-18 03:02:03,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:02:03,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:02:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:02:04,022 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 03:02:04,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:02:04,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708558345] [2022-01-18 03:02:04,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708558345] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:02:04,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167501103] [2022-01-18 03:02:04,023 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 03:02:04,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:02:04,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:02:04,024 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:02:04,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 03:02:04,264 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 03:02:04,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:02:04,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 03:02:04,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:02:04,444 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 03:02:04,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:02:04,614 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 35 proven. 22 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-18 03:02:04,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167501103] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:02:04,615 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:02:04,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 8 [2022-01-18 03:02:04,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082527775] [2022-01-18 03:02:04,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:02:04,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 03:02:04,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:02:04,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 03:02:04,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:02:04,616 INFO L87 Difference]: Start difference. First operand 2887 states and 7747 transitions. Second operand has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 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 03:02:04,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:02:04,662 INFO L93 Difference]: Finished difference Result 7467 states and 20276 transitions. [2022-01-18 03:02:04,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 03:02:04,663 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 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 138 [2022-01-18 03:02:04,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:02:04,674 INFO L225 Difference]: With dead ends: 7467 [2022-01-18 03:02:04,674 INFO L226 Difference]: Without dead ends: 6764 [2022-01-18 03:02:04,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 278 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:02:04,675 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 394 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:02:04,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 352 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:02:04,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6764 states. [2022-01-18 03:02:04,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6764 to 5365. [2022-01-18 03:02:04,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5365 states, 5364 states have (on average 2.7514914243102164) internal successors, (14759), 5364 states have internal predecessors, (14759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:04,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5365 states to 5365 states and 14759 transitions. [2022-01-18 03:02:04,768 INFO L78 Accepts]: Start accepts. Automaton has 5365 states and 14759 transitions. Word has length 138 [2022-01-18 03:02:04,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:02:04,768 INFO L470 AbstractCegarLoop]: Abstraction has 5365 states and 14759 transitions. [2022-01-18 03:02:04,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.0) internal successors, (176), 8 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 03:02:04,768 INFO L276 IsEmpty]: Start isEmpty. Operand 5365 states and 14759 transitions. [2022-01-18 03:02:04,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-18 03:02:04,778 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:02:04,778 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:02:04,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-18 03:02:04,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:02:04,997 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:02:04,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:02:04,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1307847874, now seen corresponding path program 18 times [2022-01-18 03:02:04,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:02:04,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309474435] [2022-01-18 03:02:04,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:02:04,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:02:05,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:02:05,251 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 23 proven. 58 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-18 03:02:05,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:02:05,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309474435] [2022-01-18 03:02:05,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309474435] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:02:05,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675618765] [2022-01-18 03:02:05,251 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 03:02:05,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:02:05,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:02:05,256 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:02:05,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 03:02:05,596 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 03:02:05,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:02:05,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 03:02:05,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:02:06,134 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-18 03:02:06,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:02:06,696 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 35 proven. 51 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-18 03:02:06,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675618765] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:02:06,696 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:02:06,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 50 [2022-01-18 03:02:06,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641311042] [2022-01-18 03:02:06,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:02:06,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-18 03:02:06,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:02:06,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-18 03:02:06,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=2040, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 03:02:06,698 INFO L87 Difference]: Start difference. First operand 5365 states and 14759 transitions. Second operand has 50 states, 50 states have (on average 6.08) internal successors, (304), 50 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:07,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:02:07,688 INFO L93 Difference]: Finished difference Result 9823 states and 26282 transitions. [2022-01-18 03:02:07,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 03:02:07,689 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 6.08) internal successors, (304), 50 states have internal predecessors, (304), 0 states have call successors, (0), 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 141 [2022-01-18 03:02:07,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:02:07,704 INFO L225 Difference]: With dead ends: 9823 [2022-01-18 03:02:07,704 INFO L226 Difference]: Without dead ends: 9298 [2022-01-18 03:02:07,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 252 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2850 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1584, Invalid=5898, Unknown=0, NotChecked=0, Total=7482 [2022-01-18 03:02:07,705 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 3296 mSDsluCounter, 1893 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3296 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:02:07,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3296 Valid, 1896 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 03:02:07,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9298 states. [2022-01-18 03:02:07,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9298 to 4574. [2022-01-18 03:02:07,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4574 states, 4573 states have (on average 2.728187185654931) internal successors, (12476), 4573 states have internal predecessors, (12476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:07,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4574 states to 4574 states and 12476 transitions. [2022-01-18 03:02:07,799 INFO L78 Accepts]: Start accepts. Automaton has 4574 states and 12476 transitions. Word has length 141 [2022-01-18 03:02:07,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:02:07,799 INFO L470 AbstractCegarLoop]: Abstraction has 4574 states and 12476 transitions. [2022-01-18 03:02:07,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 6.08) internal successors, (304), 50 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:07,800 INFO L276 IsEmpty]: Start isEmpty. Operand 4574 states and 12476 transitions. [2022-01-18 03:02:07,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-18 03:02:07,807 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:02:07,807 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:02:07,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-18 03:02:08,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:02:08,023 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:02:08,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:02:08,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1589161620, now seen corresponding path program 19 times [2022-01-18 03:02:08,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:02:08,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183360386] [2022-01-18 03:02:08,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:02:08,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:02:08,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:02:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 33 proven. 61 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-18 03:02:08,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:02:08,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183360386] [2022-01-18 03:02:08,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183360386] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:02:08,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363780500] [2022-01-18 03:02:08,273 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 03:02:08,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:02:08,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:02:08,274 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:02:08,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 03:02:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:02:08,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 03:02:08,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:02:09,061 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 48 proven. 46 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-18 03:02:09,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:02:09,713 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 44 proven. 50 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-01-18 03:02:09,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363780500] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:02:09,714 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:02:09,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 58 [2022-01-18 03:02:09,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231858993] [2022-01-18 03:02:09,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:02:09,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-18 03:02:09,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:02:09,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-18 03:02:09,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=2664, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 03:02:09,715 INFO L87 Difference]: Start difference. First operand 4574 states and 12476 transitions. Second operand has 58 states, 58 states have (on average 5.568965517241379) internal successors, (323), 58 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:10,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:02:10,717 INFO L93 Difference]: Finished difference Result 3620 states and 9296 transitions. [2022-01-18 03:02:10,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 03:02:10,718 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 5.568965517241379) internal successors, (323), 58 states have internal predecessors, (323), 0 states have call successors, (0), 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 141 [2022-01-18 03:02:10,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:02:10,721 INFO L225 Difference]: With dead ends: 3620 [2022-01-18 03:02:10,721 INFO L226 Difference]: Without dead ends: 2537 [2022-01-18 03:02:10,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3125 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1721, Invalid=6651, Unknown=0, NotChecked=0, Total=8372 [2022-01-18 03:02:10,723 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 1136 mSDsluCounter, 1714 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1136 SdHoareTripleChecker+Valid, 1757 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:02:10,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1136 Valid, 1757 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 03:02:10,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2537 states. [2022-01-18 03:02:10,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2537 to 2259. [2022-01-18 03:02:10,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2259 states, 2258 states have (on average 2.6266607617360496) internal successors, (5931), 2258 states have internal predecessors, (5931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:10,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 5931 transitions. [2022-01-18 03:02:10,750 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 5931 transitions. Word has length 141 [2022-01-18 03:02:10,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:02:10,750 INFO L470 AbstractCegarLoop]: Abstraction has 2259 states and 5931 transitions. [2022-01-18 03:02:10,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 5.568965517241379) internal successors, (323), 58 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:10,750 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 5931 transitions. [2022-01-18 03:02:10,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-18 03:02:10,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:02:10,754 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:02:10,771 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-01-18 03:02:10,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:02:10,971 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:02:10,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:02:10,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1333837113, now seen corresponding path program 20 times [2022-01-18 03:02:10,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:02:10,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127125284] [2022-01-18 03:02:10,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:02:10,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:02:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:02:11,423 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:02:11,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:02:11,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127125284] [2022-01-18 03:02:11,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127125284] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:02:11,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433342646] [2022-01-18 03:02:11,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 03:02:11,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:02:11,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:02:11,424 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:02:11,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 03:02:11,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 03:02:11,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:02:11,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-18 03:02:11,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:02:12,243 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-18 03:02:12,285 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 143 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 03:02:12,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:02:12,436 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-18 03:02:12,436 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-01-18 03:02:12,822 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-18 03:02:12,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433342646] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:02:12,823 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:02:12,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 24, 15] total 57 [2022-01-18 03:02:12,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070549103] [2022-01-18 03:02:12,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:02:12,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-01-18 03:02:12,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:02:12,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-01-18 03:02:12,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=229, Invalid=2963, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 03:02:12,824 INFO L87 Difference]: Start difference. First operand 2259 states and 5931 transitions. Second operand has 57 states, 57 states have (on average 5.7368421052631575) internal successors, (327), 57 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:16,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:02:16,801 INFO L93 Difference]: Finished difference Result 18188 states and 48276 transitions. [2022-01-18 03:02:16,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 158 states. [2022-01-18 03:02:16,801 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 5.7368421052631575) internal successors, (327), 57 states have internal predecessors, (327), 0 states have call successors, (0), 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 148 [2022-01-18 03:02:16,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:02:16,823 INFO L225 Difference]: With dead ends: 18188 [2022-01-18 03:02:16,823 INFO L226 Difference]: Without dead ends: 12909 [2022-01-18 03:02:16,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 258 SyntacticMatches, 12 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16850 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2746, Invalid=39484, Unknown=0, NotChecked=0, Total=42230 [2022-01-18 03:02:16,827 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 4100 mSDsluCounter, 7226 mSDsCounter, 0 mSdLazyCounter, 3084 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4100 SdHoareTripleChecker+Valid, 6909 SdHoareTripleChecker+Invalid, 3314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 3084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:02:16,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4100 Valid, 6909 Invalid, 3314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 3084 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 03:02:16,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12909 states. [2022-01-18 03:02:16,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12909 to 1130. [2022-01-18 03:02:16,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 1129 states have (on average 2.4526129317980514) internal successors, (2769), 1129 states have internal predecessors, (2769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:16,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 2769 transitions. [2022-01-18 03:02:16,903 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 2769 transitions. Word has length 148 [2022-01-18 03:02:16,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:02:16,904 INFO L470 AbstractCegarLoop]: Abstraction has 1130 states and 2769 transitions. [2022-01-18 03:02:16,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 5.7368421052631575) internal successors, (327), 57 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:16,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 2769 transitions. [2022-01-18 03:02:16,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-18 03:02:16,906 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:02:16,906 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:02:16,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-18 03:02:17,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-01-18 03:02:17,125 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:02:17,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:02:17,125 INFO L85 PathProgramCache]: Analyzing trace with hash -389869621, now seen corresponding path program 21 times [2022-01-18 03:02:17,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:02:17,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044680840] [2022-01-18 03:02:17,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:02:17,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:02:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:02:17,746 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:02:17,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:02:17,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044680840] [2022-01-18 03:02:17,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044680840] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:02:17,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128832395] [2022-01-18 03:02:17,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 03:02:17,747 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:02:17,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:02:17,748 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:02:17,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-18 03:02:18,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-01-18 03:02:18,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:02:18,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 55 conjunts are in the unsatisfiable core [2022-01-18 03:02:18,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:02:19,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 03:02:19,386 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 23 [2022-01-18 03:02:19,989 INFO L353 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2022-01-18 03:02:19,989 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-01-18 03:02:20,015 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 48 proven. 97 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:02:20,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:02:20,428 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 03:02:20,429 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 45 [2022-01-18 03:02:20,433 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2022-01-18 03:02:23,965 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 36 proven. 109 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:02:23,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128832395] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:02:23,966 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:02:23,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 37, 37] total 95 [2022-01-18 03:02:23,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857484081] [2022-01-18 03:02:23,966 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:02:23,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2022-01-18 03:02:23,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:02:23,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2022-01-18 03:02:23,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=773, Invalid=8157, Unknown=0, NotChecked=0, Total=8930 [2022-01-18 03:02:23,968 INFO L87 Difference]: Start difference. First operand 1130 states and 2769 transitions. Second operand has 95 states, 95 states have (on average 4.052631578947368) internal successors, (385), 95 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:02:38,686 WARN L228 SmtUtils]: Spent 14.48s on a formula simplification. DAG size of input: 96 DAG size of output: 26 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 03:03:34,150 WARN L228 SmtUtils]: Spent 11.12s on a formula simplification. DAG size of input: 93 DAG size of output: 47 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-18 03:03:45,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:03:45,232 INFO L93 Difference]: Finished difference Result 68036 states and 185924 transitions. [2022-01-18 03:03:45,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 302 states. [2022-01-18 03:03:45,233 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 4.052631578947368) internal successors, (385), 95 states have internal predecessors, (385), 0 states have call successors, (0), 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 148 [2022-01-18 03:03:45,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:03:45,376 INFO L225 Difference]: With dead ends: 68036 [2022-01-18 03:03:45,377 INFO L226 Difference]: Without dead ends: 62710 [2022-01-18 03:03:45,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 857 GetRequests, 386 SyntacticMatches, 84 SemanticMatches, 387 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 74091 ImplicationChecksByTransitivity, 78.7s TimeCoverageRelationStatistics Valid=20192, Invalid=130733, Unknown=7, NotChecked=0, Total=150932 [2022-01-18 03:03:45,383 INFO L933 BasicCegarLoop]: 596 mSDtfsCounter, 8194 mSDsluCounter, 20946 mSDsCounter, 0 mSdLazyCounter, 2960 mSolverCounterSat, 817 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8194 SdHoareTripleChecker+Valid, 21229 SdHoareTripleChecker+Invalid, 16567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 817 IncrementalHoareTripleChecker+Valid, 2960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12790 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:03:45,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8194 Valid, 21229 Invalid, 16567 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [817 Valid, 2960 Invalid, 0 Unknown, 12790 Unchecked, 1.5s Time] [2022-01-18 03:03:45,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62710 states. [2022-01-18 03:03:46,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62710 to 25750. [2022-01-18 03:03:46,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25750 states, 25749 states have (on average 2.9591440444289097) internal successors, (76195), 25749 states have internal predecessors, (76195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:03:46,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25750 states to 25750 states and 76195 transitions. [2022-01-18 03:03:46,348 INFO L78 Accepts]: Start accepts. Automaton has 25750 states and 76195 transitions. Word has length 148 [2022-01-18 03:03:46,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:03:46,349 INFO L470 AbstractCegarLoop]: Abstraction has 25750 states and 76195 transitions. [2022-01-18 03:03:46,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 4.052631578947368) internal successors, (385), 95 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:03:46,349 INFO L276 IsEmpty]: Start isEmpty. Operand 25750 states and 76195 transitions. [2022-01-18 03:03:46,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-18 03:03:46,388 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:03:46,388 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:03:46,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-01-18 03:03:46,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-01-18 03:03:46,589 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:03:46,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:03:46,590 INFO L85 PathProgramCache]: Analyzing trace with hash 2013641551, now seen corresponding path program 22 times [2022-01-18 03:03:46,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:03:46,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202947740] [2022-01-18 03:03:46,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:03:46,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:03:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:03:47,179 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:03:47,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:03:47,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202947740] [2022-01-18 03:03:47,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202947740] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:03:47,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118248453] [2022-01-18 03:03:47,180 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 03:03:47,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:03:47,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:03:47,181 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:03:47,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-18 03:03:47,266 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 03:03:47,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:03:47,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 67 conjunts are in the unsatisfiable core [2022-01-18 03:03:47,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:03:48,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 03:03:48,578 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-18 03:03:48,792 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-01-18 03:03:48,813 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 143 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 03:03:48,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:03:49,020 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_760 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_760) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 16)))) is different from false [2022-01-18 03:03:49,029 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 03:03:49,029 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2022-01-18 03:03:49,032 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-18 03:03:49,684 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-18 03:03:49,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118248453] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:03:49,684 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:03:49,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31, 22] total 72 [2022-01-18 03:03:49,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324059942] [2022-01-18 03:03:49,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:03:49,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-01-18 03:03:49,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:03:49,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-01-18 03:03:49,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=330, Invalid=4643, Unknown=1, NotChecked=138, Total=5112 [2022-01-18 03:03:49,686 INFO L87 Difference]: Start difference. First operand 25750 states and 76195 transitions. Second operand has 72 states, 72 states have (on average 4.833333333333333) internal successors, (348), 72 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:03:52,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:03:52,247 INFO L93 Difference]: Finished difference Result 45070 states and 131458 transitions. [2022-01-18 03:03:52,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-01-18 03:03:52,247 INFO L78 Accepts]: Start accepts. Automaton has has 72 states, 72 states have (on average 4.833333333333333) internal successors, (348), 72 states have internal predecessors, (348), 0 states have call successors, (0), 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 148 [2022-01-18 03:03:52,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:03:52,353 INFO L225 Difference]: With dead ends: 45070 [2022-01-18 03:03:52,353 INFO L226 Difference]: Without dead ends: 44900 [2022-01-18 03:03:52,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 256 SyntacticMatches, 1 SemanticMatches, 125 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 4942 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1175, Invalid=14578, Unknown=1, NotChecked=248, Total=16002 [2022-01-18 03:03:52,355 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 2187 mSDsluCounter, 6679 mSDsCounter, 0 mSdLazyCounter, 2953 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2187 SdHoareTripleChecker+Valid, 6454 SdHoareTripleChecker+Invalid, 3468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 2953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 363 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:03:52,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2187 Valid, 6454 Invalid, 3468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 2953 Invalid, 0 Unknown, 363 Unchecked, 1.0s Time] [2022-01-18 03:03:52,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44900 states. [2022-01-18 03:03:53,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44900 to 25240. [2022-01-18 03:03:53,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25240 states, 25239 states have (on average 2.959309005903562) internal successors, (74690), 25239 states have internal predecessors, (74690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:03:53,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25240 states to 25240 states and 74690 transitions. [2022-01-18 03:03:53,092 INFO L78 Accepts]: Start accepts. Automaton has 25240 states and 74690 transitions. Word has length 148 [2022-01-18 03:03:53,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:03:53,093 INFO L470 AbstractCegarLoop]: Abstraction has 25240 states and 74690 transitions. [2022-01-18 03:03:53,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 4.833333333333333) internal successors, (348), 72 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:03:53,093 INFO L276 IsEmpty]: Start isEmpty. Operand 25240 states and 74690 transitions. [2022-01-18 03:03:53,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-01-18 03:03:53,124 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:03:53,125 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:03:53,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-01-18 03:03:53,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-01-18 03:03:53,325 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:03:53,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:03:53,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1336735761, now seen corresponding path program 23 times [2022-01-18 03:03:53,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:03:53,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122153315] [2022-01-18 03:03:53,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:03:53,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:03:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:03:53,400 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-18 03:03:53,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:03:53,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122153315] [2022-01-18 03:03:53,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122153315] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:03:53,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881471024] [2022-01-18 03:03:53,401 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 03:03:53,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:03:53,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:03:53,402 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:03:53,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-18 03:03:53,556 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-01-18 03:03:53,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:03:53,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 03:03:53,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:03:53,756 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-18 03:03:53,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:03:53,951 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 51 proven. 35 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-01-18 03:03:53,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881471024] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:03:53,951 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:03:53,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 9 [2022-01-18 03:03:53,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457834911] [2022-01-18 03:03:53,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:03:53,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 03:03:53,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:03:53,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 03:03:53,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-18 03:03:53,952 INFO L87 Difference]: Start difference. First operand 25240 states and 74690 transitions. Second operand has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:03:54,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:03:54,254 INFO L93 Difference]: Finished difference Result 49759 states and 147027 transitions. [2022-01-18 03:03:54,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 03:03:54,254 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 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 151 [2022-01-18 03:03:54,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:03:54,358 INFO L225 Difference]: With dead ends: 49759 [2022-01-18 03:03:54,358 INFO L226 Difference]: Without dead ends: 48069 [2022-01-18 03:03:54,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 305 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-01-18 03:03:54,359 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 566 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:03:54,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [566 Valid, 360 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:03:54,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48069 states. [2022-01-18 03:03:55,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48069 to 40686. [2022-01-18 03:03:55,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40686 states, 40685 states have (on average 2.9758387612142068) internal successors, (121072), 40685 states have internal predecessors, (121072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:03:55,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40686 states to 40686 states and 121072 transitions. [2022-01-18 03:03:55,454 INFO L78 Accepts]: Start accepts. Automaton has 40686 states and 121072 transitions. Word has length 151 [2022-01-18 03:03:55,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:03:55,455 INFO L470 AbstractCegarLoop]: Abstraction has 40686 states and 121072 transitions. [2022-01-18 03:03:55,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 20.22222222222222) internal successors, (182), 9 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:03:55,455 INFO L276 IsEmpty]: Start isEmpty. Operand 40686 states and 121072 transitions. [2022-01-18 03:03:55,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-18 03:03:55,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:03:55,522 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:03:55,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-01-18 03:03:55,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:03:55,735 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:03:55,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:03:55,735 INFO L85 PathProgramCache]: Analyzing trace with hash -339287545, now seen corresponding path program 24 times [2022-01-18 03:03:55,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:03:55,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87782944] [2022-01-18 03:03:55,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:03:55,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:03:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:03:56,006 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 36 proven. 90 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-01-18 03:03:56,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:03:56,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87782944] [2022-01-18 03:03:56,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87782944] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:03:56,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402185574] [2022-01-18 03:03:56,007 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 03:03:56,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:03:56,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:03:56,008 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:03:56,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-18 03:03:56,485 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-01-18 03:03:56,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:03:56,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 03:03:56,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:03:57,242 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 51 proven. 75 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-01-18 03:03:57,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:03:58,064 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 36 proven. 90 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-01-18 03:03:58,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402185574] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:03:58,064 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:03:58,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 62 [2022-01-18 03:03:58,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907112941] [2022-01-18 03:03:58,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:03:58,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-18 03:03:58,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:03:58,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-18 03:03:58,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=601, Invalid=3181, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 03:03:58,066 INFO L87 Difference]: Start difference. First operand 40686 states and 121072 transitions. Second operand has 62 states, 62 states have (on average 5.661290322580645) internal successors, (351), 62 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:03:59,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:03:59,510 INFO L93 Difference]: Finished difference Result 57397 states and 155844 transitions. [2022-01-18 03:03:59,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 03:03:59,511 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.661290322580645) internal successors, (351), 62 states have internal predecessors, (351), 0 states have call successors, (0), 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 154 [2022-01-18 03:03:59,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:03:59,517 INFO L225 Difference]: With dead ends: 57397 [2022-01-18 03:03:59,517 INFO L226 Difference]: Without dead ends: 3259 [2022-01-18 03:03:59,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3311 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1596, Invalid=7146, Unknown=0, NotChecked=0, Total=8742 [2022-01-18 03:03:59,517 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 1103 mSDsluCounter, 3344 mSDsCounter, 0 mSdLazyCounter, 855 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 3325 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 03:03:59,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1103 Valid, 3325 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 855 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 03:03:59,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3259 states. [2022-01-18 03:03:59,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3259 to 2945. [2022-01-18 03:03:59,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2945 states, 2944 states have (on average 2.6426630434782608) internal successors, (7780), 2944 states have internal predecessors, (7780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:03:59,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2945 states to 2945 states and 7780 transitions. [2022-01-18 03:03:59,550 INFO L78 Accepts]: Start accepts. Automaton has 2945 states and 7780 transitions. Word has length 154 [2022-01-18 03:03:59,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:03:59,550 INFO L470 AbstractCegarLoop]: Abstraction has 2945 states and 7780 transitions. [2022-01-18 03:03:59,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.661290322580645) internal successors, (351), 62 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:03:59,551 INFO L276 IsEmpty]: Start isEmpty. Operand 2945 states and 7780 transitions. [2022-01-18 03:03:59,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-18 03:03:59,554 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:03:59,554 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:03:59,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-01-18 03:03:59,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-01-18 03:03:59,762 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:03:59,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:03:59,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1063269874, now seen corresponding path program 25 times [2022-01-18 03:03:59,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:03:59,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460179051] [2022-01-18 03:03:59,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:03:59,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:03:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:04:00,082 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-01-18 03:04:00,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:04:00,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460179051] [2022-01-18 03:04:00,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460179051] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:04:00,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972163784] [2022-01-18 03:04:00,083 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 03:04:00,083 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:04:00,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:04:00,084 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:04:00,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-18 03:04:00,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:04:00,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 64 conjunts are in the unsatisfiable core [2022-01-18 03:04:00,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:04:01,047 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-18 03:04:01,072 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 211 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 03:04:01,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:04:01,255 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-18 03:04:01,255 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-01-18 03:04:01,738 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-01-18 03:04:01,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972163784] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:04:01,738 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:04:01,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 28, 17] total 56 [2022-01-18 03:04:01,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125812072] [2022-01-18 03:04:01,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:04:01,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-01-18 03:04:01,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:04:01,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-01-18 03:04:01,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2879, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 03:04:01,740 INFO L87 Difference]: Start difference. First operand 2945 states and 7780 transitions. Second operand has 56 states, 56 states have (on average 5.785714285714286) internal successors, (324), 56 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:04:05,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:04:05,991 INFO L93 Difference]: Finished difference Result 18756 states and 49842 transitions. [2022-01-18 03:04:05,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-01-18 03:04:05,992 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 5.785714285714286) internal successors, (324), 56 states have internal predecessors, (324), 0 states have call successors, (0), 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 161 [2022-01-18 03:04:05,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:04:06,014 INFO L225 Difference]: With dead ends: 18756 [2022-01-18 03:04:06,014 INFO L226 Difference]: Without dead ends: 14102 [2022-01-18 03:04:06,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 275 SyntacticMatches, 14 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13196 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2153, Invalid=33379, Unknown=0, NotChecked=0, Total=35532 [2022-01-18 03:04:06,016 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 4543 mSDsluCounter, 9597 mSDsCounter, 0 mSdLazyCounter, 3989 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4543 SdHoareTripleChecker+Valid, 9074 SdHoareTripleChecker+Invalid, 4235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 3989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:04:06,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4543 Valid, 9074 Invalid, 4235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 3989 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 03:04:06,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14102 states. [2022-01-18 03:04:06,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14102 to 1284. [2022-01-18 03:04:06,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 1283 states have (on average 2.4629773967264224) internal successors, (3160), 1283 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:04:06,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 3160 transitions. [2022-01-18 03:04:06,090 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 3160 transitions. Word has length 161 [2022-01-18 03:04:06,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:04:06,090 INFO L470 AbstractCegarLoop]: Abstraction has 1284 states and 3160 transitions. [2022-01-18 03:04:06,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 5.785714285714286) internal successors, (324), 56 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:04:06,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 3160 transitions. [2022-01-18 03:04:06,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-18 03:04:06,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:04:06,092 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:04:06,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-01-18 03:04:06,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-01-18 03:04:06,292 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:04:06,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:04:06,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1212014386, now seen corresponding path program 26 times [2022-01-18 03:04:06,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:04:06,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387565474] [2022-01-18 03:04:06,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:04:06,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:04:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:04:06,714 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-01-18 03:04:06,714 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:04:06,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387565474] [2022-01-18 03:04:06,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387565474] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:04:06,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842593462] [2022-01-18 03:04:06,714 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 03:04:06,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:04:06,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:04:06,715 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:04:06,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-18 03:04:06,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 03:04:06,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:04:06,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 47 conjunts are in the unsatisfiable core [2022-01-18 03:04:06,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:04:07,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 03:04:07,612 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-18 03:04:07,807 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-18 03:04:07,832 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-01-18 03:04:07,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:04:08,021 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_929 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_929) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 20)) 5)) is different from false [2022-01-18 03:04:08,029 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 03:04:08,029 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2022-01-18 03:04:08,032 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-18 03:04:08,706 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-01-18 03:04:08,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842593462] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:04:08,707 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:04:08,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 24] total 62 [2022-01-18 03:04:08,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907388911] [2022-01-18 03:04:08,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:04:08,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-18 03:04:08,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:04:08,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-18 03:04:08,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=3444, Unknown=1, NotChecked=118, Total=3782 [2022-01-18 03:04:08,708 INFO L87 Difference]: Start difference. First operand 1284 states and 3160 transitions. Second operand has 62 states, 62 states have (on average 5.032258064516129) internal successors, (312), 62 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:04:10,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:04:10,726 INFO L93 Difference]: Finished difference Result 2851 states and 7362 transitions. [2022-01-18 03:04:10,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 03:04:10,727 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 5.032258064516129) internal successors, (312), 62 states have internal predecessors, (312), 0 states have call successors, (0), 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 161 [2022-01-18 03:04:10,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:04:10,731 INFO L225 Difference]: With dead ends: 2851 [2022-01-18 03:04:10,731 INFO L226 Difference]: Without dead ends: 2721 [2022-01-18 03:04:10,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 285 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2398 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=655, Invalid=8468, Unknown=1, NotChecked=188, Total=9312 [2022-01-18 03:04:10,733 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 1492 mSDsluCounter, 6531 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 6279 SdHoareTripleChecker+Invalid, 2817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 308 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 03:04:10,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1492 Valid, 6279 Invalid, 2817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2394 Invalid, 0 Unknown, 308 Unchecked, 0.8s Time] [2022-01-18 03:04:10,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2721 states. [2022-01-18 03:04:10,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2721 to 1277. [2022-01-18 03:04:10,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1277 states, 1276 states have (on average 2.4655172413793105) internal successors, (3146), 1276 states have internal predecessors, (3146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:04:10,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1277 states to 1277 states and 3146 transitions. [2022-01-18 03:04:10,755 INFO L78 Accepts]: Start accepts. Automaton has 1277 states and 3146 transitions. Word has length 161 [2022-01-18 03:04:10,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:04:10,756 INFO L470 AbstractCegarLoop]: Abstraction has 1277 states and 3146 transitions. [2022-01-18 03:04:10,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 5.032258064516129) internal successors, (312), 62 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:04:10,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1277 states and 3146 transitions. [2022-01-18 03:04:10,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-18 03:04:10,757 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:04:10,758 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:04:10,774 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-01-18 03:04:10,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:04:10,958 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:04:10,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:04:10,959 INFO L85 PathProgramCache]: Analyzing trace with hash -630277180, now seen corresponding path program 27 times [2022-01-18 03:04:10,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:04:10,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873464027] [2022-01-18 03:04:10,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:04:10,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:04:10,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:04:11,027 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-01-18 03:04:11,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:04:11,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873464027] [2022-01-18 03:04:11,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873464027] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:04:11,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248253279] [2022-01-18 03:04:11,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 03:04:11,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:04:11,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:04:11,029 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:04:11,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-18 03:04:11,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-01-18 03:04:11,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:04:11,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 89 conjunts are in the unsatisfiable core [2022-01-18 03:04:11,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:04:12,212 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-18 03:04:12,461 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 03:04:12,532 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 03:04:14,232 INFO L353 Elim1Store]: treesize reduction 121, result has 2.4 percent of original size [2022-01-18 03:04:14,232 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 16 [2022-01-18 03:04:14,314 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 80 proven. 134 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-18 03:04:14,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:04:22,167 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 03:04:22,167 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 94 [2022-01-18 03:04:22,197 INFO L353 Elim1Store]: treesize reduction 87, result has 31.5 percent of original size [2022-01-18 03:04:22,197 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 688 treesize of output 643 [2022-01-18 03:04:22,217 INFO L353 Elim1Store]: treesize reduction 126, result has 0.8 percent of original size [2022-01-18 03:04:22,217 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 604 treesize of output 536 [2022-01-18 03:04:22,235 INFO L353 Elim1Store]: treesize reduction 126, result has 0.8 percent of original size [2022-01-18 03:04:22,236 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 536 treesize of output 400 [2022-01-18 03:04:23,687 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 13 proven. 201 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-18 03:04:23,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248253279] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:04:23,688 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:04:23,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 41, 38] total 81 [2022-01-18 03:04:23,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172076447] [2022-01-18 03:04:23,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:04:23,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-01-18 03:04:23,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:04:23,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-01-18 03:04:23,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=770, Invalid=5626, Unknown=84, NotChecked=0, Total=6480 [2022-01-18 03:04:23,689 INFO L87 Difference]: Start difference. First operand 1277 states and 3146 transitions. Second operand has 81 states, 81 states have (on average 4.925925925925926) internal successors, (399), 81 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:05:30,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:05:30,660 INFO L93 Difference]: Finished difference Result 99426 states and 253831 transitions. [2022-01-18 03:05:30,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 572 states. [2022-01-18 03:05:30,661 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.925925925925926) internal successors, (399), 81 states have internal predecessors, (399), 0 states have call successors, (0), 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 164 [2022-01-18 03:05:30,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:05:30,862 INFO L225 Difference]: With dead ends: 99426 [2022-01-18 03:05:30,862 INFO L226 Difference]: Without dead ends: 91031 [2022-01-18 03:05:30,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1016 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 640 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169390 ImplicationChecksByTransitivity, 63.9s TimeCoverageRelationStatistics Valid=54172, Invalid=357238, Unknown=112, NotChecked=0, Total=411522 [2022-01-18 03:05:30,979 INFO L933 BasicCegarLoop]: 1369 mSDtfsCounter, 7556 mSDsluCounter, 42648 mSDsCounter, 0 mSdLazyCounter, 2887 mSolverCounterSat, 559 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7556 SdHoareTripleChecker+Valid, 34862 SdHoareTripleChecker+Invalid, 31226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 559 IncrementalHoareTripleChecker+Valid, 2887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27780 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:05:30,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7556 Valid, 34862 Invalid, 31226 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [559 Valid, 2887 Invalid, 0 Unknown, 27780 Unchecked, 1.5s Time] [2022-01-18 03:05:31,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91031 states. [2022-01-18 03:05:32,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91031 to 35301. [2022-01-18 03:05:32,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35301 states, 35300 states have (on average 2.8517563739376772) internal successors, (100667), 35300 states have internal predecessors, (100667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:05:32,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35301 states to 35301 states and 100667 transitions. [2022-01-18 03:05:32,143 INFO L78 Accepts]: Start accepts. Automaton has 35301 states and 100667 transitions. Word has length 164 [2022-01-18 03:05:32,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:05:32,143 INFO L470 AbstractCegarLoop]: Abstraction has 35301 states and 100667 transitions. [2022-01-18 03:05:32,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.925925925925926) internal successors, (399), 81 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:05:32,144 INFO L276 IsEmpty]: Start isEmpty. Operand 35301 states and 100667 transitions. [2022-01-18 03:05:32,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-18 03:05:32,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:05:32,414 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:05:32,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-01-18 03:05:32,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:05:32,630 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:05:32,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:05:32,631 INFO L85 PathProgramCache]: Analyzing trace with hash 863832648, now seen corresponding path program 28 times [2022-01-18 03:05:32,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:05:32,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055484766] [2022-01-18 03:05:32,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:05:32,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:05:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:05:32,815 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-01-18 03:05:32,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:05:32,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055484766] [2022-01-18 03:05:32,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055484766] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:05:32,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011162375] [2022-01-18 03:05:32,815 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 03:05:32,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:05:32,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:05:32,816 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:05:32,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-18 03:05:32,917 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 03:05:32,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:05:32,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-18 03:05:32,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:05:33,134 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-01-18 03:05:33,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:05:33,340 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 70 proven. 51 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-01-18 03:05:33,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011162375] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:05:33,340 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:05:33,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 10 [2022-01-18 03:05:33,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413778827] [2022-01-18 03:05:33,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:05:33,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 03:05:33,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:05:33,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 03:05:33,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2022-01-18 03:05:33,341 INFO L87 Difference]: Start difference. First operand 35301 states and 100667 transitions. Second operand has 10 states, 10 states have (on average 18.8) internal successors, (188), 10 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 03:05:33,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:05:33,602 INFO L93 Difference]: Finished difference Result 63944 states and 181819 transitions. [2022-01-18 03:05:33,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 03:05:33,602 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.8) internal successors, (188), 10 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 164 [2022-01-18 03:05:33,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:05:33,739 INFO L225 Difference]: With dead ends: 63944 [2022-01-18 03:05:33,739 INFO L226 Difference]: Without dead ends: 62444 [2022-01-18 03:05:33,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 332 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2022-01-18 03:05:33,739 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 347 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:05:33,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 466 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:05:33,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62444 states. [2022-01-18 03:05:34,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62444 to 50616. [2022-01-18 03:05:34,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50616 states, 50615 states have (on average 2.9026375580361554) internal successors, (146917), 50615 states have internal predecessors, (146917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:05:35,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50616 states to 50616 states and 146917 transitions. [2022-01-18 03:05:35,158 INFO L78 Accepts]: Start accepts. Automaton has 50616 states and 146917 transitions. Word has length 164 [2022-01-18 03:05:35,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:05:35,158 INFO L470 AbstractCegarLoop]: Abstraction has 50616 states and 146917 transitions. [2022-01-18 03:05:35,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.8) internal successors, (188), 10 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 03:05:35,159 INFO L276 IsEmpty]: Start isEmpty. Operand 50616 states and 146917 transitions. [2022-01-18 03:05:35,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-18 03:05:35,372 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:05:35,372 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:05:35,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-01-18 03:05:35,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:05:35,587 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:05:35,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:05:35,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1131956970, now seen corresponding path program 29 times [2022-01-18 03:05:35,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:05:35,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761121425] [2022-01-18 03:05:35,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:05:35,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:05:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:05:35,900 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 52 proven. 129 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-01-18 03:05:35,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:05:35,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761121425] [2022-01-18 03:05:35,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761121425] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:05:35,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972767266] [2022-01-18 03:05:35,901 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 03:05:35,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:05:35,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:05:35,902 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:05:35,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-18 03:05:36,108 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2022-01-18 03:05:36,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:05:36,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 03:05:36,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:05:36,707 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 70 proven. 111 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-01-18 03:05:36,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:05:37,383 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 37 proven. 144 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-01-18 03:05:37,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972767266] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:05:37,383 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:05:37,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 24] total 69 [2022-01-18 03:05:37,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875382768] [2022-01-18 03:05:37,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:05:37,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-01-18 03:05:37,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:05:37,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-01-18 03:05:37,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=640, Invalid=4052, Unknown=0, NotChecked=0, Total=4692 [2022-01-18 03:05:37,385 INFO L87 Difference]: Start difference. First operand 50616 states and 146917 transitions. Second operand has 69 states, 69 states have (on average 4.9855072463768115) internal successors, (344), 69 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:05:38,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:05:38,601 INFO L93 Difference]: Finished difference Result 11445 states and 29340 transitions. [2022-01-18 03:05:38,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 03:05:38,602 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.9855072463768115) internal successors, (344), 69 states have internal predecessors, (344), 0 states have call successors, (0), 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 167 [2022-01-18 03:05:38,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:05:38,608 INFO L225 Difference]: With dead ends: 11445 [2022-01-18 03:05:38,608 INFO L226 Difference]: Without dead ends: 4074 [2022-01-18 03:05:38,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4338 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1932, Invalid=9198, Unknown=0, NotChecked=0, Total=11130 [2022-01-18 03:05:38,610 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 1191 mSDsluCounter, 2334 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 2355 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:05:38,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1191 Valid, 2355 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 03:05:38,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4074 states. [2022-01-18 03:05:38,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4074 to 3724. [2022-01-18 03:05:38,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3724 states, 3723 states have (on average 2.6532366371206018) internal successors, (9878), 3723 states have internal predecessors, (9878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:05:38,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3724 states to 3724 states and 9878 transitions. [2022-01-18 03:05:38,663 INFO L78 Accepts]: Start accepts. Automaton has 3724 states and 9878 transitions. Word has length 167 [2022-01-18 03:05:38,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:05:38,663 INFO L470 AbstractCegarLoop]: Abstraction has 3724 states and 9878 transitions. [2022-01-18 03:05:38,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.9855072463768115) internal successors, (344), 69 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:05:38,663 INFO L276 IsEmpty]: Start isEmpty. Operand 3724 states and 9878 transitions. [2022-01-18 03:05:38,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-01-18 03:05:38,668 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:05:38,668 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:05:38,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-01-18 03:05:38,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:05:38,869 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:05:38,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:05:38,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1049547545, now seen corresponding path program 30 times [2022-01-18 03:05:38,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:05:38,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565207999] [2022-01-18 03:05:38,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:05:38,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:05:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:05:39,575 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:05:39,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:05:39,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565207999] [2022-01-18 03:05:39,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565207999] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:05:39,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250999795] [2022-01-18 03:05:39,575 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 03:05:39,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:05:39,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:05:39,576 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:05:39,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-18 03:05:39,891 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-01-18 03:05:39,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:05:39,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 03:05:39,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:05:43,836 INFO L353 Elim1Store]: treesize reduction 16, result has 15.8 percent of original size [2022-01-18 03:05:43,836 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-01-18 03:05:43,862 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 52 proven. 176 refuted. 3 times theorem prover too weak. 63 trivial. 0 not checked. [2022-01-18 03:05:43,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:05:44,399 INFO L353 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2022-01-18 03:05:44,399 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2022-01-18 03:05:45,470 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 45 proven. 186 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-01-18 03:05:45,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250999795] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:05:45,470 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:05:45,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 31, 31] total 89 [2022-01-18 03:05:45,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125054957] [2022-01-18 03:05:45,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:05:45,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2022-01-18 03:05:45,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:05:45,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2022-01-18 03:05:45,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=859, Invalid=6972, Unknown=1, NotChecked=0, Total=7832 [2022-01-18 03:05:45,473 INFO L87 Difference]: Start difference. First operand 3724 states and 9878 transitions. Second operand has 89 states, 89 states have (on average 4.674157303370786) internal successors, (416), 89 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:05:50,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:05:50,079 INFO L93 Difference]: Finished difference Result 18172 states and 49591 transitions. [2022-01-18 03:05:50,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-01-18 03:05:50,080 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 4.674157303370786) internal successors, (416), 89 states have internal predecessors, (416), 0 states have call successors, (0), 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 174 [2022-01-18 03:05:50,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:05:50,104 INFO L225 Difference]: With dead ends: 18172 [2022-01-18 03:05:50,104 INFO L226 Difference]: Without dead ends: 18010 [2022-01-18 03:05:50,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 510 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9273 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=3565, Invalid=25162, Unknown=3, NotChecked=0, Total=28730 [2022-01-18 03:05:50,106 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 2533 mSDsluCounter, 11103 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2533 SdHoareTripleChecker+Valid, 11181 SdHoareTripleChecker+Invalid, 2535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 703 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:05:50,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2533 Valid, 11181 Invalid, 2535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1763 Invalid, 0 Unknown, 703 Unchecked, 0.6s Time] [2022-01-18 03:05:50,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18010 states. [2022-01-18 03:05:50,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18010 to 8489. [2022-01-18 03:05:50,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8489 states, 8488 states have (on average 2.7758011310084827) internal successors, (23561), 8488 states have internal predecessors, (23561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:05:50,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8489 states to 8489 states and 23561 transitions. [2022-01-18 03:05:50,261 INFO L78 Accepts]: Start accepts. Automaton has 8489 states and 23561 transitions. Word has length 174 [2022-01-18 03:05:50,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:05:50,261 INFO L470 AbstractCegarLoop]: Abstraction has 8489 states and 23561 transitions. [2022-01-18 03:05:50,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 4.674157303370786) internal successors, (416), 89 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:05:50,262 INFO L276 IsEmpty]: Start isEmpty. Operand 8489 states and 23561 transitions. [2022-01-18 03:05:50,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-01-18 03:05:50,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:05:50,272 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:05:50,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-01-18 03:05:50,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-01-18 03:05:50,473 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:05:50,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:05:50,473 INFO L85 PathProgramCache]: Analyzing trace with hash 318915571, now seen corresponding path program 31 times [2022-01-18 03:05:50,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:05:50,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712576758] [2022-01-18 03:05:50,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:05:50,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:05:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:05:51,130 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:05:51,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:05:51,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712576758] [2022-01-18 03:05:51,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712576758] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:05:51,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064770197] [2022-01-18 03:05:51,131 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 03:05:51,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:05:51,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:05:51,132 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:05:51,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-01-18 03:05:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:05:51,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 72 conjunts are in the unsatisfiable core [2022-01-18 03:05:51,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:05:52,362 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-18 03:05:52,380 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 292 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 03:05:52,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:05:52,623 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-18 03:05:52,624 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-01-18 03:05:53,247 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-01-18 03:05:53,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064770197] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:05:53,247 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:05:53,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 32, 19] total 77 [2022-01-18 03:05:53,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3785841] [2022-01-18 03:05:53,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:05:53,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2022-01-18 03:05:53,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:05:53,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2022-01-18 03:05:53,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=5539, Unknown=0, NotChecked=0, Total=5852 [2022-01-18 03:05:53,249 INFO L87 Difference]: Start difference. First operand 8489 states and 23561 transitions. Second operand has 77 states, 77 states have (on average 5.233766233766234) internal successors, (403), 77 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:06:02,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:06:02,923 INFO L93 Difference]: Finished difference Result 72594 states and 202734 transitions. [2022-01-18 03:06:02,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 260 states. [2022-01-18 03:06:02,924 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 5.233766233766234) internal successors, (403), 77 states have internal predecessors, (403), 0 states have call successors, (0), 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 174 [2022-01-18 03:06:02,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:06:03,053 INFO L225 Difference]: With dead ends: 72594 [2022-01-18 03:06:03,053 INFO L226 Difference]: Without dead ends: 61965 [2022-01-18 03:06:03,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 294 SyntacticMatches, 16 SemanticMatches, 324 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43776 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=5910, Invalid=100040, Unknown=0, NotChecked=0, Total=105950 [2022-01-18 03:06:03,060 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 9345 mSDsluCounter, 20429 mSDsCounter, 0 mSdLazyCounter, 8660 mSolverCounterSat, 541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9345 SdHoareTripleChecker+Valid, 18875 SdHoareTripleChecker+Invalid, 9201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 541 IncrementalHoareTripleChecker+Valid, 8660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:06:03,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9345 Valid, 18875 Invalid, 9201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [541 Valid, 8660 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-18 03:06:03,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61965 states. [2022-01-18 03:06:03,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61965 to 4790. [2022-01-18 03:06:03,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4790 states, 4789 states have (on average 2.7293798287742743) internal successors, (13071), 4789 states have internal predecessors, (13071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:06:03,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4790 states to 4790 states and 13071 transitions. [2022-01-18 03:06:03,488 INFO L78 Accepts]: Start accepts. Automaton has 4790 states and 13071 transitions. Word has length 174 [2022-01-18 03:06:03,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:06:03,489 INFO L470 AbstractCegarLoop]: Abstraction has 4790 states and 13071 transitions. [2022-01-18 03:06:03,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 5.233766233766234) internal successors, (403), 77 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:06:03,489 INFO L276 IsEmpty]: Start isEmpty. Operand 4790 states and 13071 transitions. [2022-01-18 03:06:03,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-01-18 03:06:03,494 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:06:03,495 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:06:03,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-01-18 03:06:03,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:06:03,695 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:06:03,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:06:03,695 INFO L85 PathProgramCache]: Analyzing trace with hash -550410261, now seen corresponding path program 32 times [2022-01-18 03:06:03,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:06:03,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821002568] [2022-01-18 03:06:03,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:06:03,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:06:03,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:06:04,571 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 294 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:06:04,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:06:04,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821002568] [2022-01-18 03:06:04,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821002568] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:06:04,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460467423] [2022-01-18 03:06:04,572 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 03:06:04,572 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:06:04,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:06:04,573 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:06:04,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-01-18 03:06:04,685 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 03:06:04,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:06:04,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 51 conjunts are in the unsatisfiable core [2022-01-18 03:06:04,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:06:05,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 03:06:05,659 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-18 03:06:05,935 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-18 03:06:05,962 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-01-18 03:06:05,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:06:06,234 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1210 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1210) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 24)))) is different from false [2022-01-18 03:06:06,246 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 03:06:06,246 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2022-01-18 03:06:06,249 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-18 03:06:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-01-18 03:06:07,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460467423] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:06:07,074 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:06:07,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 27, 26] total 81 [2022-01-18 03:06:07,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948074911] [2022-01-18 03:06:07,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:06:07,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-01-18 03:06:07,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:06:07,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-01-18 03:06:07,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=6013, Unknown=1, NotChecked=156, Total=6480 [2022-01-18 03:06:07,075 INFO L87 Difference]: Start difference. First operand 4790 states and 13071 transitions. Second operand has 81 states, 81 states have (on average 4.592592592592593) internal successors, (372), 81 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:06:11,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:06:11,636 INFO L93 Difference]: Finished difference Result 13374 states and 37209 transitions. [2022-01-18 03:06:11,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-18 03:06:11,637 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.592592592592593) internal successors, (372), 81 states have internal predecessors, (372), 0 states have call successors, (0), 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 174 [2022-01-18 03:06:11,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:06:11,659 INFO L225 Difference]: With dead ends: 13374 [2022-01-18 03:06:11,659 INFO L226 Difference]: Without dead ends: 13228 [2022-01-18 03:06:11,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 460 GetRequests, 308 SyntacticMatches, 1 SemanticMatches, 151 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6423 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=1515, Invalid=21440, Unknown=1, NotChecked=300, Total=23256 [2022-01-18 03:06:11,661 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 3355 mSDsluCounter, 8346 mSDsCounter, 0 mSdLazyCounter, 4216 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3355 SdHoareTripleChecker+Valid, 8063 SdHoareTripleChecker+Invalid, 4926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 4216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 449 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:06:11,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3355 Valid, 8063 Invalid, 4926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 4216 Invalid, 0 Unknown, 449 Unchecked, 1.4s Time] [2022-01-18 03:06:11,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13228 states. [2022-01-18 03:06:11,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13228 to 4753. [2022-01-18 03:06:11,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4753 states, 4752 states have (on average 2.727272727272727) internal successors, (12960), 4752 states have internal predecessors, (12960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:06:11,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4753 states to 4753 states and 12960 transitions. [2022-01-18 03:06:11,766 INFO L78 Accepts]: Start accepts. Automaton has 4753 states and 12960 transitions. Word has length 174 [2022-01-18 03:06:11,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:06:11,766 INFO L470 AbstractCegarLoop]: Abstraction has 4753 states and 12960 transitions. [2022-01-18 03:06:11,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.592592592592593) internal successors, (372), 81 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:06:11,766 INFO L276 IsEmpty]: Start isEmpty. Operand 4753 states and 12960 transitions. [2022-01-18 03:06:11,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 03:06:11,772 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:06:11,772 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:06:11,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-01-18 03:06:11,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:06:11,972 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:06:11,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:06:11,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1518196055, now seen corresponding path program 33 times [2022-01-18 03:06:11,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:06:11,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948716722] [2022-01-18 03:06:11,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:06:11,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:06:11,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:06:12,058 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 92 proven. 70 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-01-18 03:06:12,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:06:12,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948716722] [2022-01-18 03:06:12,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948716722] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:06:12,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090955716] [2022-01-18 03:06:12,059 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 03:06:12,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:06:12,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:06:12,060 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:06:12,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-01-18 03:06:12,405 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-01-18 03:06:12,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:06:12,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 88 conjunts are in the unsatisfiable core [2022-01-18 03:06:12,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:06:16,927 INFO L353 Elim1Store]: treesize reduction 206, result has 1.4 percent of original size [2022-01-18 03:06:16,928 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 68 treesize of output 19 [2022-01-18 03:06:16,999 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 117 proven. 169 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-18 03:06:17,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:06:17,807 INFO L353 Elim1Store]: treesize reduction 160, result has 24.9 percent of original size [2022-01-18 03:06:17,807 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 73 treesize of output 72 [2022-01-18 03:06:19,487 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 24 proven. 262 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-01-18 03:06:19,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090955716] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:06:19,487 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:06:19,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 35, 35] total 73 [2022-01-18 03:06:19,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239265671] [2022-01-18 03:06:19,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:06:19,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-01-18 03:06:19,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:06:19,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-01-18 03:06:19,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=688, Invalid=4568, Unknown=0, NotChecked=0, Total=5256 [2022-01-18 03:06:19,489 INFO L87 Difference]: Start difference. First operand 4753 states and 12960 transitions. Second operand has 73 states, 73 states have (on average 5.904109589041096) internal successors, (431), 73 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:08:47,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:08:47,000 INFO L93 Difference]: Finished difference Result 546816 states and 1495015 transitions. [2022-01-18 03:08:47,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1344 states. [2022-01-18 03:08:47,001 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 73 states have (on average 5.904109589041096) internal successors, (431), 73 states have internal predecessors, (431), 0 states have call successors, (0), 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 177 [2022-01-18 03:08:47,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:08:48,768 INFO L225 Difference]: With dead ends: 546816 [2022-01-18 03:08:48,768 INFO L226 Difference]: Without dead ends: 476992 [2022-01-18 03:08:48,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2014 GetRequests, 589 SyntacticMatches, 19 SemanticMatches, 1406 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933947 ImplicationChecksByTransitivity, 114.6s TimeCoverageRelationStatistics Valid=168080, Invalid=1812974, Unknown=2, NotChecked=0, Total=1981056 [2022-01-18 03:08:48,860 INFO L933 BasicCegarLoop]: 1462 mSDtfsCounter, 9369 mSDsluCounter, 43270 mSDsCounter, 0 mSdLazyCounter, 2814 mSolverCounterSat, 846 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9369 SdHoareTripleChecker+Valid, 38976 SdHoareTripleChecker+Invalid, 59385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 846 IncrementalHoareTripleChecker+Valid, 2814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55725 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 03:08:48,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9369 Valid, 38976 Invalid, 59385 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [846 Valid, 2814 Invalid, 0 Unknown, 55725 Unchecked, 1.6s Time] [2022-01-18 03:08:49,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476992 states. [2022-01-18 03:08:56,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476992 to 140095. [2022-01-18 03:08:56,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140095 states, 140094 states have (on average 2.905299299042072) internal successors, (407015), 140094 states have internal predecessors, (407015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:08:57,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140095 states to 140095 states and 407015 transitions. [2022-01-18 03:08:57,536 INFO L78 Accepts]: Start accepts. Automaton has 140095 states and 407015 transitions. Word has length 177 [2022-01-18 03:08:57,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:08:57,536 INFO L470 AbstractCegarLoop]: Abstraction has 140095 states and 407015 transitions. [2022-01-18 03:08:57,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 5.904109589041096) internal successors, (431), 73 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:08:57,536 INFO L276 IsEmpty]: Start isEmpty. Operand 140095 states and 407015 transitions. [2022-01-18 03:08:57,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-18 03:08:57,755 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:08:57,755 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:08:57,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-01-18 03:08:57,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-01-18 03:08:57,955 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:08:57,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:08:57,956 INFO L85 PathProgramCache]: Analyzing trace with hash -270830645, now seen corresponding path program 34 times [2022-01-18 03:08:57,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:08:57,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335652142] [2022-01-18 03:08:57,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:08:57,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:08:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:08:58,034 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 92 proven. 70 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-01-18 03:08:58,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:08:58,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335652142] [2022-01-18 03:08:58,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335652142] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:08:58,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441460462] [2022-01-18 03:08:58,035 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 03:08:58,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:08:58,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:08:58,036 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:08:58,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-01-18 03:08:58,153 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 03:08:58,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:08:58,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-18 03:08:58,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:08:58,374 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 92 proven. 70 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-01-18 03:08:58,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:08:58,597 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 92 proven. 70 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-01-18 03:08:58,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441460462] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:08:58,597 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:08:58,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 11 [2022-01-18 03:08:58,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610841727] [2022-01-18 03:08:58,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:08:58,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 03:08:58,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:08:58,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 03:08:58,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2022-01-18 03:08:58,598 INFO L87 Difference]: Start difference. First operand 140095 states and 407015 transitions. Second operand has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:09:00,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:00,397 INFO L93 Difference]: Finished difference Result 253040 states and 741791 transitions. [2022-01-18 03:09:00,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 03:09:00,397 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 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 177 [2022-01-18 03:09:00,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:01,158 INFO L225 Difference]: With dead ends: 253040 [2022-01-18 03:09:01,158 INFO L226 Difference]: Without dead ends: 249386 [2022-01-18 03:09:01,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 359 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2022-01-18 03:09:01,159 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 522 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:01,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [522 Valid, 520 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:09:01,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249386 states. [2022-01-18 03:09:06,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249386 to 208896. [2022-01-18 03:09:07,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208896 states, 208895 states have (on average 2.9826563584575982) internal successors, (623062), 208895 states have internal predecessors, (623062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:09:07,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208896 states to 208896 states and 623062 transitions. [2022-01-18 03:09:07,789 INFO L78 Accepts]: Start accepts. Automaton has 208896 states and 623062 transitions. Word has length 177 [2022-01-18 03:09:07,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:07,789 INFO L470 AbstractCegarLoop]: Abstraction has 208896 states and 623062 transitions. [2022-01-18 03:09:07,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 17.636363636363637) internal successors, (194), 11 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:09:07,789 INFO L276 IsEmpty]: Start isEmpty. Operand 208896 states and 623062 transitions. [2022-01-18 03:09:08,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-18 03:09:08,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:08,581 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:09:08,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-01-18 03:09:08,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-01-18 03:09:08,782 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:08,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:08,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1003609821, now seen corresponding path program 35 times [2022-01-18 03:09:08,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:08,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471147118] [2022-01-18 03:09:08,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:08,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:09,136 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 71 proven. 175 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-01-18 03:09:09,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:09,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471147118] [2022-01-18 03:09:09,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471147118] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:09:09,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311951650] [2022-01-18 03:09:09,137 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 03:09:09,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:09:09,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:09:09,137 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:09:09,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-01-18 03:09:09,440 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2022-01-18 03:09:09,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:09:09,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 28 conjunts are in the unsatisfiable core [2022-01-18 03:09:09,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:09:10,498 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 92 proven. 154 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-01-18 03:09:10,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:09:11,461 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 71 proven. 175 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-01-18 03:09:11,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1311951650] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:09:11,462 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:09:11,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 82 [2022-01-18 03:09:11,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307629686] [2022-01-18 03:09:11,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:09:11,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-01-18 03:09:11,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:11,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-01-18 03:09:11,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1213, Invalid=5429, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 03:09:11,464 INFO L87 Difference]: Start difference. First operand 208896 states and 623062 transitions. Second operand has 82 states, 82 states have (on average 4.926829268292683) internal successors, (404), 82 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:09:13,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:13,879 INFO L93 Difference]: Finished difference Result 37167 states and 96478 transitions. [2022-01-18 03:09:13,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-18 03:09:13,879 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 4.926829268292683) internal successors, (404), 82 states have internal predecessors, (404), 0 states have call successors, (0), 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 180 [2022-01-18 03:09:13,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:13,891 INFO L225 Difference]: With dead ends: 37167 [2022-01-18 03:09:13,891 INFO L226 Difference]: Without dead ends: 7011 [2022-01-18 03:09:13,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7899 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4052, Invalid=16828, Unknown=0, NotChecked=0, Total=20880 [2022-01-18 03:09:13,893 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 1544 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:13,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1544 Valid, 2684 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:09:13,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7011 states. [2022-01-18 03:09:13,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7011 to 6481. [2022-01-18 03:09:13,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6481 states, 6480 states have (on average 2.786574074074074) internal successors, (18057), 6480 states have internal predecessors, (18057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:09:13,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6481 states to 6481 states and 18057 transitions. [2022-01-18 03:09:13,983 INFO L78 Accepts]: Start accepts. Automaton has 6481 states and 18057 transitions. Word has length 180 [2022-01-18 03:09:13,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:13,983 INFO L470 AbstractCegarLoop]: Abstraction has 6481 states and 18057 transitions. [2022-01-18 03:09:13,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 4.926829268292683) internal successors, (404), 82 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:09:13,983 INFO L276 IsEmpty]: Start isEmpty. Operand 6481 states and 18057 transitions. [2022-01-18 03:09:13,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-01-18 03:09:13,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:13,991 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:09:14,008 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-01-18 03:09:14,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-01-18 03:09:14,192 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:14,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:14,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1321379986, now seen corresponding path program 36 times [2022-01-18 03:09:14,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:14,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209408272] [2022-01-18 03:09:14,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:14,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:14,968 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:09:14,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:14,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209408272] [2022-01-18 03:09:14,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209408272] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:09:14,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42851019] [2022-01-18 03:09:14,969 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 03:09:14,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:09:14,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:09:14,970 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:09:14,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-01-18 03:09:15,255 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2022-01-18 03:09:15,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:09:15,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 42 conjunts are in the unsatisfiable core [2022-01-18 03:09:15,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:09:15,808 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 03:09:15,832 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-01-18 03:09:15,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:09:15,909 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-18 03:09:15,909 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-01-18 03:09:16,168 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-01-18 03:09:16,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42851019] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:09:16,169 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:09:16,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 21, 21] total 58 [2022-01-18 03:09:16,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151013323] [2022-01-18 03:09:16,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:09:16,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-18 03:09:16,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:16,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-18 03:09:16,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=213, Invalid=3093, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 03:09:16,170 INFO L87 Difference]: Start difference. First operand 6481 states and 18057 transitions. Second operand has 58 states, 58 states have (on average 5.103448275862069) internal successors, (296), 58 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:09:24,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:24,950 INFO L93 Difference]: Finished difference Result 60370 states and 163223 transitions. [2022-01-18 03:09:24,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 298 states. [2022-01-18 03:09:24,950 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 5.103448275862069) internal successors, (296), 58 states have internal predecessors, (296), 0 states have call successors, (0), 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 187 [2022-01-18 03:09:24,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:25,044 INFO L225 Difference]: With dead ends: 60370 [2022-01-18 03:09:25,044 INFO L226 Difference]: Without dead ends: 45475 [2022-01-18 03:09:25,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 694 GetRequests, 354 SyntacticMatches, 5 SemanticMatches, 335 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46760 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=7679, Invalid=105553, Unknown=0, NotChecked=0, Total=113232 [2022-01-18 03:09:25,050 INFO L933 BasicCegarLoop]: 333 mSDtfsCounter, 10460 mSDsluCounter, 10438 mSDsCounter, 0 mSdLazyCounter, 4778 mSolverCounterSat, 778 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10460 SdHoareTripleChecker+Valid, 9792 SdHoareTripleChecker+Invalid, 5556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 778 IncrementalHoareTripleChecker+Valid, 4778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:25,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10460 Valid, 9792 Invalid, 5556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [778 Valid, 4778 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-18 03:09:25,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45475 states. [2022-01-18 03:09:25,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45475 to 1592. [2022-01-18 03:09:25,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1591 states have (on average 2.4776869893148965) internal successors, (3942), 1591 states have internal predecessors, (3942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:09:25,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 3942 transitions. [2022-01-18 03:09:25,311 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 3942 transitions. Word has length 187 [2022-01-18 03:09:25,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:25,311 INFO L470 AbstractCegarLoop]: Abstraction has 1592 states and 3942 transitions. [2022-01-18 03:09:25,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 5.103448275862069) internal successors, (296), 58 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:09:25,311 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 3942 transitions. [2022-01-18 03:09:25,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-01-18 03:09:25,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:25,313 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:09:25,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-01-18 03:09:25,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-01-18 03:09:25,514 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:25,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:25,514 INFO L85 PathProgramCache]: Analyzing trace with hash -57376110, now seen corresponding path program 37 times [2022-01-18 03:09:25,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:25,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953287138] [2022-01-18 03:09:25,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:25,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:26,695 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 388 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:09:26,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:26,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953287138] [2022-01-18 03:09:26,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953287138] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:09:26,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926819477] [2022-01-18 03:09:26,696 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 03:09:26,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:09:26,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:09:26,697 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:09:26,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-01-18 03:09:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:26,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 94 conjunts are in the unsatisfiable core [2022-01-18 03:09:26,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:09:26,858 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-18 03:09:26,961 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 03:09:26,961 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-18 03:09:28,398 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-18 03:09:28,714 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-18 03:09:28,739 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 386 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 03:09:28,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:09:29,047 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1460 (Array Int Int))) (= 5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1460) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 28)))) is different from false [2022-01-18 03:09:29,055 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 03:09:29,055 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2022-01-18 03:09:29,058 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-18 03:09:30,004 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-18 03:09:30,046 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 0 proven. 184 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-01-18 03:09:30,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926819477] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:09:30,046 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:09:30,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 43, 28] total 106 [2022-01-18 03:09:30,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390044739] [2022-01-18 03:09:30,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:09:30,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2022-01-18 03:09:30,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:30,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2022-01-18 03:09:30,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=522, Invalid=10401, Unknown=1, NotChecked=206, Total=11130 [2022-01-18 03:09:30,049 INFO L87 Difference]: Start difference. First operand 1592 states and 3942 transitions. Second operand has 106 states, 106 states have (on average 4.1415094339622645) internal successors, (439), 106 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:09:35,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:35,873 INFO L93 Difference]: Finished difference Result 4616 states and 12073 transitions. [2022-01-18 03:09:35,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-18 03:09:35,874 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 106 states have (on average 4.1415094339622645) internal successors, (439), 106 states have internal predecessors, (439), 0 states have call successors, (0), 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 187 [2022-01-18 03:09:35,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:35,879 INFO L225 Difference]: With dead ends: 4616 [2022-01-18 03:09:35,879 INFO L226 Difference]: Without dead ends: 4486 [2022-01-18 03:09:35,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 11334 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=2113, Invalid=33422, Unknown=1, NotChecked=374, Total=35910 [2022-01-18 03:09:35,881 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 3784 mSDsluCounter, 11113 mSDsCounter, 0 mSdLazyCounter, 6033 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3784 SdHoareTripleChecker+Valid, 10645 SdHoareTripleChecker+Invalid, 6951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 6033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 615 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:35,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3784 Valid, 10645 Invalid, 6951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 6033 Invalid, 0 Unknown, 615 Unchecked, 1.9s Time] [2022-01-18 03:09:35,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4486 states. [2022-01-18 03:09:35,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4486 to 1585. [2022-01-18 03:09:35,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1584 states have (on average 2.4797979797979797) internal successors, (3928), 1584 states have internal predecessors, (3928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:09:35,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 3928 transitions. [2022-01-18 03:09:35,906 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 3928 transitions. Word has length 187 [2022-01-18 03:09:35,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:35,906 INFO L470 AbstractCegarLoop]: Abstraction has 1585 states and 3928 transitions. [2022-01-18 03:09:35,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 106 states have (on average 4.1415094339622645) internal successors, (439), 106 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:09:35,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 3928 transitions. [2022-01-18 03:09:35,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-18 03:09:35,908 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:35,908 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:09:35,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-01-18 03:09:36,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:09:36,119 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:36,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:36,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1997163932, now seen corresponding path program 38 times [2022-01-18 03:09:36,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:36,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5746452] [2022-01-18 03:09:36,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:36,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:36,208 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 117 proven. 92 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-01-18 03:09:36,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:36,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5746452] [2022-01-18 03:09:36,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5746452] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:09:36,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647302446] [2022-01-18 03:09:36,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 03:09:36,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:09:36,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:09:36,210 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:09:36,211 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-01-18 03:09:36,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 03:09:36,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:09:36,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-18 03:09:36,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:09:36,758 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 117 proven. 92 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-01-18 03:09:36,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:09:37,027 INFO L134 CoverageAnalysis]: Checked inductivity of 413 backedges. 117 proven. 92 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-01-18 03:09:37,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647302446] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:09:37,027 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:09:37,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 12 [2022-01-18 03:09:37,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014905856] [2022-01-18 03:09:37,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:09:37,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 03:09:37,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:37,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 03:09:37,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-01-18 03:09:37,028 INFO L87 Difference]: Start difference. First operand 1585 states and 3928 transitions. Second operand has 12 states, 12 states have (on average 16.666666666666668) internal successors, (200), 12 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:09:37,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:37,093 INFO L93 Difference]: Finished difference Result 7288 states and 19002 transitions. [2022-01-18 03:09:37,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 03:09:37,094 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 16.666666666666668) internal successors, (200), 12 states have internal predecessors, (200), 0 states have call successors, (0), 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 190 [2022-01-18 03:09:37,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:37,103 INFO L225 Difference]: With dead ends: 7288 [2022-01-18 03:09:37,103 INFO L226 Difference]: Without dead ends: 6751 [2022-01-18 03:09:37,104 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 386 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-01-18 03:09:37,104 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 623 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 623 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:37,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [623 Valid, 597 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:09:37,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6751 states. [2022-01-18 03:09:37,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6751 to 5554. [2022-01-18 03:09:37,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5554 states, 5553 states have (on average 2.6677471636953) internal successors, (14814), 5553 states have internal predecessors, (14814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:09:37,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5554 states to 5554 states and 14814 transitions. [2022-01-18 03:09:37,169 INFO L78 Accepts]: Start accepts. Automaton has 5554 states and 14814 transitions. Word has length 190 [2022-01-18 03:09:37,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:37,169 INFO L470 AbstractCegarLoop]: Abstraction has 5554 states and 14814 transitions. [2022-01-18 03:09:37,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 16.666666666666668) internal successors, (200), 12 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:09:37,169 INFO L276 IsEmpty]: Start isEmpty. Operand 5554 states and 14814 transitions. [2022-01-18 03:09:37,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-01-18 03:09:37,175 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:37,175 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:09:37,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-01-18 03:09:37,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-01-18 03:09:37,375 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:37,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:37,376 INFO L85 PathProgramCache]: Analyzing trace with hash -803788558, now seen corresponding path program 39 times [2022-01-18 03:09:37,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:37,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258521614] [2022-01-18 03:09:37,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:37,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:37,778 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 93 proven. 228 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2022-01-18 03:09:37,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:37,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258521614] [2022-01-18 03:09:37,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258521614] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:09:37,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645210970] [2022-01-18 03:09:37,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 03:09:37,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:09:37,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:09:37,779 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:09:37,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-01-18 03:09:38,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-01-18 03:09:38,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:09:38,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 32 conjunts are in the unsatisfiable core [2022-01-18 03:09:38,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:09:39,158 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 117 proven. 213 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-01-18 03:09:39,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:09:40,100 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 117 proven. 213 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-01-18 03:09:40,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645210970] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:09:40,101 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:09:40,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 82 [2022-01-18 03:09:40,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28307001] [2022-01-18 03:09:40,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:09:40,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 82 states [2022-01-18 03:09:40,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:40,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2022-01-18 03:09:40,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=5652, Unknown=0, NotChecked=0, Total=6642 [2022-01-18 03:09:40,102 INFO L87 Difference]: Start difference. First operand 5554 states and 14814 transitions. Second operand has 82 states, 82 states have (on average 4.951219512195122) internal successors, (406), 82 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:09:42,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:42,315 INFO L93 Difference]: Finished difference Result 17575 states and 46559 transitions. [2022-01-18 03:09:42,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-01-18 03:09:42,322 INFO L78 Accepts]: Start accepts. Automaton has has 82 states, 82 states have (on average 4.951219512195122) internal successors, (406), 82 states have internal predecessors, (406), 0 states have call successors, (0), 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 193 [2022-01-18 03:09:42,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:42,349 INFO L225 Difference]: With dead ends: 17575 [2022-01-18 03:09:42,349 INFO L226 Difference]: Without dead ends: 17062 [2022-01-18 03:09:42,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 336 SyntacticMatches, 1 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8830 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4186, Invalid=17276, Unknown=0, NotChecked=0, Total=21462 [2022-01-18 03:09:42,352 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 6001 mSDsluCounter, 3818 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 680 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6001 SdHoareTripleChecker+Valid, 3708 SdHoareTripleChecker+Invalid, 1520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 680 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:42,352 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6001 Valid, 3708 Invalid, 1520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [680 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:09:42,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17062 states. [2022-01-18 03:09:42,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17062 to 8072. [2022-01-18 03:09:42,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8072 states, 8071 states have (on average 2.7396852930244084) internal successors, (22112), 8071 states have internal predecessors, (22112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:09:42,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8072 states to 8072 states and 22112 transitions. [2022-01-18 03:09:42,551 INFO L78 Accepts]: Start accepts. Automaton has 8072 states and 22112 transitions. Word has length 193 [2022-01-18 03:09:42,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:42,552 INFO L470 AbstractCegarLoop]: Abstraction has 8072 states and 22112 transitions. [2022-01-18 03:09:42,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 82 states, 82 states have (on average 4.951219512195122) internal successors, (406), 82 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:09:42,552 INFO L276 IsEmpty]: Start isEmpty. Operand 8072 states and 22112 transitions. [2022-01-18 03:09:42,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-01-18 03:09:42,561 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:42,561 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:09:42,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-01-18 03:09:42,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-01-18 03:09:42,764 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:42,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:42,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1207505616, now seen corresponding path program 40 times [2022-01-18 03:09:42,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:42,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396284783] [2022-01-18 03:09:42,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:42,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:43,191 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 111 proven. 235 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-01-18 03:09:43,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:43,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396284783] [2022-01-18 03:09:43,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396284783] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:09:43,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889388259] [2022-01-18 03:09:43,192 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 03:09:43,192 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:09:43,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:09:43,193 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:09:43,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-01-18 03:09:43,313 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 03:09:43,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:09:43,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 33 conjunts are in the unsatisfiable core [2022-01-18 03:09:43,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:09:44,524 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 142 proven. 204 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-01-18 03:09:44,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:09:45,717 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 134 proven. 212 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-01-18 03:09:45,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889388259] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:09:45,717 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:09:45,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 94 [2022-01-18 03:09:45,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252479849] [2022-01-18 03:09:45,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:09:45,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2022-01-18 03:09:45,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:45,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2022-01-18 03:09:45,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1588, Invalid=7154, Unknown=0, NotChecked=0, Total=8742 [2022-01-18 03:09:45,719 INFO L87 Difference]: Start difference. First operand 8072 states and 22112 transitions. Second operand has 94 states, 94 states have (on average 4.712765957446808) internal successors, (443), 94 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:09:48,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:09:48,609 INFO L93 Difference]: Finished difference Result 8062 states and 21205 transitions. [2022-01-18 03:09:48,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-18 03:09:48,610 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 4.712765957446808) internal successors, (443), 94 states have internal predecessors, (443), 0 states have call successors, (0), 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 193 [2022-01-18 03:09:48,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:09:48,617 INFO L225 Difference]: With dead ends: 8062 [2022-01-18 03:09:48,617 INFO L226 Difference]: Without dead ends: 5983 [2022-01-18 03:09:48,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 493 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10983 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5465, Invalid=23265, Unknown=0, NotChecked=0, Total=28730 [2022-01-18 03:09:48,619 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 2005 mSDsluCounter, 2466 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2005 SdHoareTripleChecker+Valid, 2519 SdHoareTripleChecker+Invalid, 958 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 03:09:48,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2005 Valid, 2519 Invalid, 958 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 03:09:48,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5983 states. [2022-01-18 03:09:48,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5983 to 5561. [2022-01-18 03:09:48,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5561 states, 5560 states have (on average 2.6656474820143883) internal successors, (14821), 5560 states have internal predecessors, (14821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:09:48,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5561 states to 5561 states and 14821 transitions. [2022-01-18 03:09:48,678 INFO L78 Accepts]: Start accepts. Automaton has 5561 states and 14821 transitions. Word has length 193 [2022-01-18 03:09:48,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:09:48,679 INFO L470 AbstractCegarLoop]: Abstraction has 5561 states and 14821 transitions. [2022-01-18 03:09:48,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 4.712765957446808) internal successors, (443), 94 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:09:48,679 INFO L276 IsEmpty]: Start isEmpty. Operand 5561 states and 14821 transitions. [2022-01-18 03:09:48,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-01-18 03:09:48,684 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:09:48,685 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:09:48,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-01-18 03:09:48,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-01-18 03:09:48,885 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:09:48,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:09:48,886 INFO L85 PathProgramCache]: Analyzing trace with hash -768737529, now seen corresponding path program 41 times [2022-01-18 03:09:48,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:09:48,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121201780] [2022-01-18 03:09:48,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:09:48,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:09:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:09:49,757 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:09:49,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:09:49,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121201780] [2022-01-18 03:09:49,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121201780] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:09:49,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627242819] [2022-01-18 03:09:49,757 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 03:09:49,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:09:49,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:09:49,758 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:09:49,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-01-18 03:09:50,087 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-01-18 03:09:50,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:09:50,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-18 03:09:50,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:09:51,154 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-01-18 03:09:51,179 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-01-18 03:09:51,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:09:51,523 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-01-18 03:09:51,524 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 13 [2022-01-18 03:09:52,067 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-01-18 03:09:52,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627242819] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:09:52,068 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:09:52,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 26, 23] total 81 [2022-01-18 03:09:52,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36708865] [2022-01-18 03:09:52,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:09:52,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-01-18 03:09:52,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:09:52,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-01-18 03:09:52,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=305, Invalid=6175, Unknown=0, NotChecked=0, Total=6480 [2022-01-18 03:09:52,070 INFO L87 Difference]: Start difference. First operand 5561 states and 14821 transitions. Second operand has 81 states, 81 states have (on average 4.864197530864198) internal successors, (394), 81 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:10:08,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:08,293 INFO L93 Difference]: Finished difference Result 72168 states and 192856 transitions. [2022-01-18 03:10:08,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 386 states. [2022-01-18 03:10:08,293 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 4.864197530864198) internal successors, (394), 81 states have internal predecessors, (394), 0 states have call successors, (0), 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 200 [2022-01-18 03:10:08,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:08,412 INFO L225 Difference]: With dead ends: 72168 [2022-01-18 03:10:08,412 INFO L226 Difference]: Without dead ends: 53029 [2022-01-18 03:10:08,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 818 GetRequests, 362 SyntacticMatches, 4 SemanticMatches, 452 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84370 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=11161, Invalid=194501, Unknown=0, NotChecked=0, Total=205662 [2022-01-18 03:10:08,429 INFO L933 BasicCegarLoop]: 453 mSDtfsCounter, 16955 mSDsluCounter, 22327 mSDsCounter, 0 mSdLazyCounter, 9926 mSolverCounterSat, 944 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16955 SdHoareTripleChecker+Valid, 20659 SdHoareTripleChecker+Invalid, 10870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 944 IncrementalHoareTripleChecker+Valid, 9926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:08,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16955 Valid, 20659 Invalid, 10870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [944 Valid, 9926 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-01-18 03:10:08,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53029 states. [2022-01-18 03:10:08,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53029 to 1746. [2022-01-18 03:10:08,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1746 states, 1745 states have (on average 2.4830945558739255) internal successors, (4333), 1745 states have internal predecessors, (4333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:10:08,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1746 states to 1746 states and 4333 transitions. [2022-01-18 03:10:08,808 INFO L78 Accepts]: Start accepts. Automaton has 1746 states and 4333 transitions. Word has length 200 [2022-01-18 03:10:08,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:08,809 INFO L470 AbstractCegarLoop]: Abstraction has 1746 states and 4333 transitions. [2022-01-18 03:10:08,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 4.864197530864198) internal successors, (394), 81 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:10:08,809 INFO L276 IsEmpty]: Start isEmpty. Operand 1746 states and 4333 transitions. [2022-01-18 03:10:08,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-01-18 03:10:08,811 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:08,811 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:10:08,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-01-18 03:10:09,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:10:09,011 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:09,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:09,012 INFO L85 PathProgramCache]: Analyzing trace with hash 2030479371, now seen corresponding path program 42 times [2022-01-18 03:10:09,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:09,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24663074] [2022-01-18 03:10:09,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:09,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:10,065 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:10:10,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:10,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [24663074] [2022-01-18 03:10:10,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [24663074] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:10:10,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537125800] [2022-01-18 03:10:10,065 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 03:10:10,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:10:10,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:10:10,066 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:10:10,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-01-18 03:10:10,632 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2022-01-18 03:10:10,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:10:10,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 57 conjunts are in the unsatisfiable core [2022-01-18 03:10:10,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:10:11,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-01-18 03:10:11,475 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-01-18 03:10:11,821 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-18 03:10:11,846 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-01-18 03:10:11,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:10:11,927 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1729 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1729) c_~queue~0.base) (+ c_~queue~0.offset (* c_~front~0 4) 32)) 5)) is different from false [2022-01-18 03:10:11,935 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 03:10:11,935 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 47 [2022-01-18 03:10:11,938 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 7 [2022-01-18 03:10:12,880 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 0 proven. 234 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-01-18 03:10:12,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537125800] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:10:12,880 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:10:12,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 30, 30] total 88 [2022-01-18 03:10:12,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521883157] [2022-01-18 03:10:12,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:10:12,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 88 states [2022-01-18 03:10:12,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:12,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants. [2022-01-18 03:10:12,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=339, Invalid=7146, Unknown=1, NotChecked=170, Total=7656 [2022-01-18 03:10:12,882 INFO L87 Difference]: Start difference. First operand 1746 states and 4333 transitions. Second operand has 88 states, 88 states have (on average 4.431818181818182) internal successors, (390), 88 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:10:18,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:18,285 INFO L93 Difference]: Finished difference Result 5232 states and 13721 transitions. [2022-01-18 03:10:18,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-18 03:10:18,285 INFO L78 Accepts]: Start accepts. Automaton has has 88 states, 88 states have (on average 4.431818181818182) internal successors, (390), 88 states have internal predecessors, (390), 0 states have call successors, (0), 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 200 [2022-01-18 03:10:18,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:18,292 INFO L225 Difference]: With dead ends: 5232 [2022-01-18 03:10:18,292 INFO L226 Difference]: Without dead ends: 5102 [2022-01-18 03:10:18,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 360 SyntacticMatches, 1 SemanticMatches, 169 ConstructedPredicates, 1 IntricatePredicates, 3 DeprecatedPredicates, 8148 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1925, Invalid=26808, Unknown=1, NotChecked=336, Total=29070 [2022-01-18 03:10:18,294 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 3986 mSDsluCounter, 9050 mSDsCounter, 0 mSdLazyCounter, 4930 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3986 SdHoareTripleChecker+Valid, 8739 SdHoareTripleChecker+Invalid, 5713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 4930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 416 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:18,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3986 Valid, 8739 Invalid, 5713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 4930 Invalid, 0 Unknown, 416 Unchecked, 1.7s Time] [2022-01-18 03:10:18,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2022-01-18 03:10:18,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 1739. [2022-01-18 03:10:18,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1739 states, 1738 states have (on average 2.4850402761795167) internal successors, (4319), 1738 states have internal predecessors, (4319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:10:18,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 4319 transitions. [2022-01-18 03:10:18,324 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 4319 transitions. Word has length 200 [2022-01-18 03:10:18,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:18,324 INFO L470 AbstractCegarLoop]: Abstraction has 1739 states and 4319 transitions. [2022-01-18 03:10:18,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 88 states, 88 states have (on average 4.431818181818182) internal successors, (390), 88 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:10:18,325 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 4319 transitions. [2022-01-18 03:10:18,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-01-18 03:10:18,326 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:18,327 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:10:18,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-01-18 03:10:18,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:10:18,527 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:18,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:18,527 INFO L85 PathProgramCache]: Analyzing trace with hash -835373013, now seen corresponding path program 43 times [2022-01-18 03:10:18,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:18,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597418839] [2022-01-18 03:10:18,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:18,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:18,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:18,660 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 145 proven. 117 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-01-18 03:10:18,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:18,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597418839] [2022-01-18 03:10:18,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597418839] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:10:18,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444524610] [2022-01-18 03:10:18,660 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 03:10:18,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:10:18,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:10:18,661 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:10:18,662 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-01-18 03:10:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:18,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 03:10:18,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:10:19,070 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 145 proven. 117 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-01-18 03:10:19,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:10:19,329 INFO L134 CoverageAnalysis]: Checked inductivity of 523 backedges. 145 proven. 117 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-01-18 03:10:19,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444524610] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:10:19,330 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:10:19,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 13 [2022-01-18 03:10:19,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442447953] [2022-01-18 03:10:19,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:10:19,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 03:10:19,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:19,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 03:10:19,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-01-18 03:10:19,331 INFO L87 Difference]: Start difference. First operand 1739 states and 4319 transitions. Second operand has 13 states, 13 states have (on average 15.846153846153847) internal successors, (206), 13 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:10:19,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:19,398 INFO L93 Difference]: Finished difference Result 8536 states and 22307 transitions. [2022-01-18 03:10:19,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 03:10:19,399 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.846153846153847) internal successors, (206), 13 states have internal predecessors, (206), 0 states have call successors, (0), 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 203 [2022-01-18 03:10:19,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:19,409 INFO L225 Difference]: With dead ends: 8536 [2022-01-18 03:10:19,409 INFO L226 Difference]: Without dead ends: 7942 [2022-01-18 03:10:19,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 413 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-01-18 03:10:19,409 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 638 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:19,410 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [638 Valid, 596 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:10:19,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7942 states. [2022-01-18 03:10:19,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7942 to 6612. [2022-01-18 03:10:19,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6612 states, 6611 states have (on average 2.67115413704432) internal successors, (17659), 6611 states have internal predecessors, (17659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:10:19,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6612 states to 6612 states and 17659 transitions. [2022-01-18 03:10:19,491 INFO L78 Accepts]: Start accepts. Automaton has 6612 states and 17659 transitions. Word has length 203 [2022-01-18 03:10:19,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:19,491 INFO L470 AbstractCegarLoop]: Abstraction has 6612 states and 17659 transitions. [2022-01-18 03:10:19,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.846153846153847) internal successors, (206), 13 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:10:19,491 INFO L276 IsEmpty]: Start isEmpty. Operand 6612 states and 17659 transitions. [2022-01-18 03:10:19,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-01-18 03:10:19,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:19,500 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:10:19,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-01-18 03:10:19,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-01-18 03:10:19,700 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:19,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:19,701 INFO L85 PathProgramCache]: Analyzing trace with hash 908150979, now seen corresponding path program 44 times [2022-01-18 03:10:19,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:19,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295190894] [2022-01-18 03:10:19,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:19,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:19,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:20,185 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 118 proven. 288 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-01-18 03:10:20,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:20,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295190894] [2022-01-18 03:10:20,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295190894] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:10:20,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63758611] [2022-01-18 03:10:20,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 03:10:20,186 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:10:20,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:10:20,186 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:10:20,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-01-18 03:10:20,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 03:10:20,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:10:20,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-18 03:10:20,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:10:21,650 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 145 proven. 261 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-01-18 03:10:21,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:10:22,942 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 118 proven. 288 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-01-18 03:10:22,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63758611] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:10:22,943 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:10:22,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 100 [2022-01-18 03:10:22,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8208347] [2022-01-18 03:10:22,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:10:22,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2022-01-18 03:10:22,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:22,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2022-01-18 03:10:22,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1774, Invalid=8126, Unknown=0, NotChecked=0, Total=9900 [2022-01-18 03:10:22,945 INFO L87 Difference]: Start difference. First operand 6612 states and 17659 transitions. Second operand has 100 states, 100 states have (on average 4.64) internal successors, (464), 100 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:10:26,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:10:26,529 INFO L93 Difference]: Finished difference Result 9570 states and 25238 transitions. [2022-01-18 03:10:26,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-18 03:10:26,530 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 4.64) internal successors, (464), 100 states have internal predecessors, (464), 0 states have call successors, (0), 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 206 [2022-01-18 03:10:26,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:10:26,540 INFO L225 Difference]: With dead ends: 9570 [2022-01-18 03:10:26,540 INFO L226 Difference]: Without dead ends: 7077 [2022-01-18 03:10:26,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13362 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=6689, Invalid=28467, Unknown=0, NotChecked=0, Total=35156 [2022-01-18 03:10:26,545 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 1645 mSDsluCounter, 3862 mSDsCounter, 0 mSdLazyCounter, 1002 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 3812 SdHoareTripleChecker+Invalid, 1216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 03:10:26,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1645 Valid, 3812 Invalid, 1216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1002 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 03:10:26,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7077 states. [2022-01-18 03:10:26,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7077 to 6619. [2022-01-18 03:10:26,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6619 states, 6618 states have (on average 2.6693865216077364) internal successors, (17666), 6618 states have internal predecessors, (17666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:10:26,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6619 states to 6619 states and 17666 transitions. [2022-01-18 03:10:26,663 INFO L78 Accepts]: Start accepts. Automaton has 6619 states and 17666 transitions. Word has length 206 [2022-01-18 03:10:26,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:10:26,664 INFO L470 AbstractCegarLoop]: Abstraction has 6619 states and 17666 transitions. [2022-01-18 03:10:26,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 4.64) internal successors, (464), 100 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:10:26,664 INFO L276 IsEmpty]: Start isEmpty. Operand 6619 states and 17666 transitions. [2022-01-18 03:10:26,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-01-18 03:10:26,671 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:10:26,671 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:10:26,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-01-18 03:10:26,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-01-18 03:10:26,874 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-18 03:10:26,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:10:26,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1249395506, now seen corresponding path program 45 times [2022-01-18 03:10:26,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:10:26,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179141828] [2022-01-18 03:10:26,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:10:26,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:10:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:10:27,885 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 0 proven. 615 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:10:27,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:10:27,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179141828] [2022-01-18 03:10:27,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179141828] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:10:27,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948719518] [2022-01-18 03:10:27,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 03:10:27,885 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:10:27,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:10:27,886 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:10:27,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-01-18 03:10:28,401 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-01-18 03:10:28,401 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 03:10:28,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 567 conjuncts, 78 conjunts are in the unsatisfiable core [2022-01-18 03:10:28,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:10:31,213 INFO L353 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2022-01-18 03:10:31,213 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 10 [2022-01-18 03:10:31,239 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 108 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:10:31,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:10:32,053 INFO L353 Elim1Store]: treesize reduction 8, result has 57.9 percent of original size [2022-01-18 03:10:32,053 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 19 [2022-01-18 03:10:36,798 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 108 proven. 507 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:10:36,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948719518] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:10:36,799 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:10:36,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50, 50] total 140 [2022-01-18 03:10:36,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404482744] [2022-01-18 03:10:36,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:10:36,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 140 states [2022-01-18 03:10:36,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:10:36,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants. [2022-01-18 03:10:36,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1741, Invalid=17719, Unknown=0, NotChecked=0, Total=19460 [2022-01-18 03:10:36,801 INFO L87 Difference]: Start difference. First operand 6619 states and 17666 transitions. Second operand has 140 states, 140 states have (on average 4.15) internal successors, (581), 140 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-01-18 03:14:01,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 975 states. [2022-01-18 03:14:01,720 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 03:14:01,720 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 03:14:01,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1995 GetRequests, 602 SyntacticMatches, 289 SemanticMatches, 1103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 665836 ImplicationChecksByTransitivity, 192.7s TimeCoverageRelationStatistics Valid=88606, Invalid=1131216, Unknown=98, NotChecked=0, Total=1219920 [2022-01-18 03:14:01,723 INFO L933 BasicCegarLoop]: 515 mSDtfsCounter, 21921 mSDsluCounter, 26199 mSDsCounter, 0 mSdLazyCounter, 7489 mSolverCounterSat, 2685 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21921 SdHoareTripleChecker+Valid, 25962 SdHoareTripleChecker+Invalid, 42744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2685 IncrementalHoareTripleChecker+Valid, 7489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32570 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:14:01,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21921 Valid, 25962 Invalid, 42744 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2685 Valid, 7489 Invalid, 0 Unknown, 32570 Unchecked, 4.0s Time] [2022-01-18 03:14:01,724 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-18 03:14:01,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-01-18 03:14:01,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-01-18 03:14:01,927 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (6619states) and FLOYD_HOARE automaton (currently 975 states, 140 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 1105 known predicates. [2022-01-18 03:14:01,929 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-18 03:14:01,929 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-18 03:14:01,931 INFO L732 BasicCegarLoop]: Path program histogram: [45, 1, 1, 1, 1] [2022-01-18 03:14:01,932 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 03:14:01,933 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 03:14:01,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 03:14:01 BasicIcfg [2022-01-18 03:14:01,934 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 03:14:01,934 INFO L158 Benchmark]: Toolchain (without parser) took 775011.59ms. Allocated memory was 371.2MB in the beginning and 11.2GB in the end (delta: 10.8GB). Free memory was 316.9MB in the beginning and 7.9GB in the end (delta: -7.6GB). Peak memory consumption was 3.2GB. Max. memory is 16.0GB. [2022-01-18 03:14:01,934 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 371.2MB. Free memory is still 333.2MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 03:14:01,934 INFO L158 Benchmark]: CACSL2BoogieTranslator took 179.13ms. Allocated memory is still 371.2MB. Free memory was 316.8MB in the beginning and 341.7MB in the end (delta: -25.0MB). Peak memory consumption was 11.4MB. Max. memory is 16.0GB. [2022-01-18 03:14:01,934 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.28ms. Allocated memory is still 371.2MB. Free memory was 341.7MB in the beginning and 339.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 03:14:01,934 INFO L158 Benchmark]: Boogie Preprocessor took 17.67ms. Allocated memory is still 371.2MB. Free memory was 339.6MB in the beginning and 338.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 03:14:01,934 INFO L158 Benchmark]: RCFGBuilder took 416.11ms. Allocated memory is still 371.2MB. Free memory was 337.5MB in the beginning and 318.2MB in the end (delta: 19.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2022-01-18 03:14:01,934 INFO L158 Benchmark]: TraceAbstraction took 774361.00ms. Allocated memory was 371.2MB in the beginning and 11.2GB in the end (delta: 10.8GB). Free memory was 317.2MB in the beginning and 7.9GB in the end (delta: -7.6GB). Peak memory consumption was 3.2GB. Max. memory is 16.0GB. [2022-01-18 03:14:01,935 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 371.2MB. Free memory is still 333.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 179.13ms. Allocated memory is still 371.2MB. Free memory was 316.8MB in the beginning and 341.7MB in the end (delta: -25.0MB). Peak memory consumption was 11.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 30.28ms. Allocated memory is still 371.2MB. Free memory was 341.7MB in the beginning and 339.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 17.67ms. Allocated memory is still 371.2MB. Free memory was 339.6MB in the beginning and 338.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 416.11ms. Allocated memory is still 371.2MB. Free memory was 337.5MB in the beginning and 318.2MB in the end (delta: 19.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 774361.00ms. Allocated memory was 371.2MB in the beginning and 11.2GB in the end (delta: 10.8GB). Free memory was 317.2MB in the beginning and 7.9GB in the end (delta: -7.6GB). Peak memory consumption was 3.2GB. 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: 85]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (6619states) and FLOYD_HOARE automaton (currently 975 states, 140 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 1105 known predicates. - TimeoutResultAtElement [Line: 79]: 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 (6619states) and FLOYD_HOARE automaton (currently 975 states, 140 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 1105 known predicates. - TimeoutResultAtElement [Line: 80]: 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 (6619states) and FLOYD_HOARE automaton (currently 975 states, 140 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 1105 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 124 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 774.3s, OverallIterations: 49, TraceHistogramMax: 10, PathProgramHistogramMax: 45, EmptinessCheckTime: 1.8s, AutomataDifference: 615.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 149159 SdHoareTripleChecker+Valid, 35.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 149159 mSDsluCounter, 302856 SdHoareTripleChecker+Invalid, 29.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 134806 IncrementalHoareTripleChecker+Unchecked, 320444 mSDsCounter, 11872 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 86547 IncrementalHoareTripleChecker+Invalid, 233225 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11872 mSolverCounterUnsat, 11867 mSDtfsCounter, 86547 mSolverCounterSat, 0.8s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21845 GetRequests, 13283 SyntacticMatches, 491 SemanticMatches, 8070 ConstructedPredicates, 9 IntricatePredicates, 9 DeprecatedPredicates, 2179287 ImplicationChecksByTransitivity, 557.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=208896occurred in iteration=38, InterpolantAutomatonStates: 5135, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 24.0s AutomataMinimizationTime, 48 MinimizatonAttempts, 763066 StatesRemovedByMinimization, 46 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 6.5s SatisfiabilityAnalysisTime, 113.9s InterpolantComputationTime, 14091 NumberOfCodeBlocks, 13918 NumberOfCodeBlocksAsserted, 228 NumberOfCheckSat, 20828 ConstructedInterpolants, 510 QuantifiedInterpolants, 185481 SizeOfPredicates, 817 NumberOfNonLiveVariables, 17589 ConjunctsInSsa, 1805 ConjunctsInUnsatCore, 139 InterpolantComputations, 4 PerfectInterpolantSequences, 12582/28521 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