/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 09:59:48,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 09:59:48,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 09:59:48,200 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-18 09:59:48,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-18 09:59:48,203 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-18 09:59:48,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-18 09:59:48,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-18 09:59:48,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-18 09:59:48,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-18 09:59:48,213 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-18 09:59:48,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-18 09:59:48,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-18 09:59:48,217 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-18 09:59:48,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-18 09:59:48,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-18 09:59:48,219 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-18 09:59:48,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-18 09:59:48,221 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-18 09:59:48,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-18 09:59:48,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-18 09:59:48,230 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-18 09:59:48,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-18 09:59:48,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-18 09:59:48,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-18 09:59:48,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 09:59:48,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 09:59:48,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 09:59:48,244 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2022-01-18 09:59:48,263 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 09:59:48,264 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 09:59:48,264 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 09:59:48,264 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 09:59:48,265 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 09:59:48,265 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 09:59:48,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 09:59:48,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 09:59:48,266 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 09:59:48,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 09:59:48,266 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 09:59:48,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 09:59:48,266 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 09:59:48,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 09:59:48,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 09:59:48,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 09:59:48,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 09:59:48,267 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 09:59:48,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 09:59:48,268 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 09:59:48,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 09:59:48,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 09:59:48,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 09:59:48,268 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 09:59:48,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 09:59:48,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 09:59:48,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 09:59:48,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 09:59:48,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 09:59:48,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 09:59:48,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 09:59:48,270 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 09:59:48,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 09:59:48,270 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 09:59:48,270 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 09:59:48,491 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 09:59:48,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 09:59:48,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 09:59:48,517 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-18 09:59:48,517 INFO L275 PluginConnector]: CDTParser initialized [2022-01-18 09:59:48,518 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-01-18 09:59:48,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/688dce2fc/8c44332779ec42be9613735fd94513ba/FLAGa7c83a09a [2022-01-18 09:59:48,927 INFO L306 CDTParser]: Found 1 translation units. [2022-01-18 09:59:48,928 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-01-18 09:59:48,943 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/688dce2fc/8c44332779ec42be9613735fd94513ba/FLAGa7c83a09a [2022-01-18 09:59:49,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/688dce2fc/8c44332779ec42be9613735fd94513ba [2022-01-18 09:59:49,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 09:59:49,291 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-18 09:59:49,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-18 09:59:49,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-18 09:59:49,297 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-18 09:59:49,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 09:59:49" (1/1) ... [2022-01-18 09:59:49,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3610db8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:59:49, skipping insertion in model container [2022-01-18 09:59:49,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.01 09:59:49" (1/1) ... [2022-01-18 09:59:49,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-18 09:59:49,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-18 09:59:49,506 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2022-01-18 09:59:49,607 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 09:59:49,614 INFO L203 MainTranslator]: Completed pre-run [2022-01-18 09:59:49,623 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2022-01-18 09:59:49,645 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-18 09:59:49,669 INFO L208 MainTranslator]: Completed translation [2022-01-18 09:59:49,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:59:49 WrapperNode [2022-01-18 09:59:49,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-18 09:59:49,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 09:59:49,670 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 09:59:49,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 09:59:49,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:59:49" (1/1) ... [2022-01-18 09:59:49,686 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:59:49" (1/1) ... [2022-01-18 09:59:49,705 INFO L137 Inliner]: procedures = 165, calls = 35, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 118 [2022-01-18 09:59:49,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 09:59:49,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 09:59:49,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 09:59:49,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 09:59:49,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:59:49" (1/1) ... [2022-01-18 09:59:49,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:59:49" (1/1) ... [2022-01-18 09:59:49,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:59:49" (1/1) ... [2022-01-18 09:59:49,715 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:59:49" (1/1) ... [2022-01-18 09:59:49,721 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:59:49" (1/1) ... [2022-01-18 09:59:49,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:59:49" (1/1) ... [2022-01-18 09:59:49,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:59:49" (1/1) ... [2022-01-18 09:59:49,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 09:59:49,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 09:59:49,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 09:59:49,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 09:59:49,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:59:49" (1/1) ... [2022-01-18 09:59:49,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 09:59:49,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 09:59:49,756 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 09:59:49,759 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 09:59:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-18 09:59:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2022-01-18 09:59:49,782 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2022-01-18 09:59:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-18 09:59:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-01-18 09:59:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-18 09:59:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-18 09:59:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-18 09:59:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-18 09:59:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 09:59:49,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 09:59:49,784 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 09:59:49,898 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 09:59:49,899 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 09:59:50,141 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 09:59:50,148 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 09:59:50,149 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-18 09:59:50,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 09:59:50 BoogieIcfgContainer [2022-01-18 09:59:50,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 09:59:50,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 09:59:50,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 09:59:50,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 09:59:50,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.01 09:59:49" (1/3) ... [2022-01-18 09:59:50,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47969f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 09:59:50, skipping insertion in model container [2022-01-18 09:59:50,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.01 09:59:49" (2/3) ... [2022-01-18 09:59:50,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47969f06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 09:59:50, skipping insertion in model container [2022-01-18 09:59:50,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 09:59:50" (3/3) ... [2022-01-18 09:59:50,156 INFO L111 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2022-01-18 09:59:50,159 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 09:59:50,159 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 09:59:50,159 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-18 09:59:50,159 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 09:59:50,190 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,191 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,191 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,191 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,191 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,191 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,191 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,192 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,192 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,192 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,192 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,192 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,193 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#in~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,193 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#in~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,193 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#in~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,193 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#in~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,193 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,193 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,193 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~got~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,194 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,194 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,194 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,194 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,194 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,194 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,194 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,194 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,194 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,195 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~got~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,195 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,195 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,195 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,195 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,195 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,195 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,195 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,195 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,196 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,196 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#in~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,196 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#in~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,196 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,196 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,196 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#in~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,196 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#in~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,196 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,197 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,197 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~got~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,197 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~got~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,197 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,197 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,197 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,198 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,198 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,198 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,198 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,198 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,199 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,199 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,199 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,199 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,199 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,199 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,200 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,200 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,200 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,200 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,200 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,200 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,200 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,201 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,201 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,201 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,201 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,202 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,202 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,202 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,202 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,202 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,202 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,202 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,203 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,203 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,203 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,203 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,203 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,203 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,204 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,204 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,204 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,204 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,204 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,204 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,204 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,205 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,205 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,205 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,205 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,205 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,205 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,205 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,206 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,206 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,206 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,206 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,206 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,206 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,207 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,207 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,207 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,207 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,207 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,207 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,207 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,208 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,208 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,208 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,208 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,208 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,208 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,209 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,209 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,209 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,209 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,209 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,210 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,210 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,210 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,210 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,210 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,210 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,210 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,211 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,211 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,211 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,211 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,211 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,211 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,211 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,212 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,212 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,212 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,212 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,212 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~got~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,212 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,212 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~got~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,212 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,213 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,213 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,213 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,213 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,213 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,213 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,214 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,214 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,214 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,214 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,214 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,214 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,214 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,215 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,215 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,215 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,216 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~got~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,216 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~got~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,216 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,216 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,216 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,216 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,216 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,217 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,219 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,219 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,219 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,219 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,220 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,220 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#in~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,220 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,220 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~got~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,220 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~nondet5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,220 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,220 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,220 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,221 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,221 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,221 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#t~ret12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,221 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_~qp#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,221 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#in~qp#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,221 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_pqueue_get_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,221 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0___VERIFIER_assert_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,221 WARN L322 ript$VariableManager]: TermVariabe |workerThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 09:59:50,227 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 09:59:50,261 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 09:59:50,266 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 09:59:50,266 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-18 09:59:50,276 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 136 places, 142 transitions, 289 flow [2022-01-18 09:59:50,387 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1949 states, 1947 states have (on average 2.12788906009245) internal successors, (4143), 1948 states have internal predecessors, (4143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:59:50,392 INFO L276 IsEmpty]: Start isEmpty. Operand has 1949 states, 1947 states have (on average 2.12788906009245) internal successors, (4143), 1948 states have internal predecessors, (4143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:59:50,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-18 09:59:50,415 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:59:50,415 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] [2022-01-18 09:59:50,416 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 09:59:50,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:59:50,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1865521660, now seen corresponding path program 1 times [2022-01-18 09:59:50,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:59:50,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948256279] [2022-01-18 09:59:50,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:59:50,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:59:50,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:59:50,668 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 09:59:50,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:59:50,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948256279] [2022-01-18 09:59:50,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948256279] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:59:50,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:59:50,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 09:59:50,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580921983] [2022-01-18 09:59:50,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:59:50,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-18 09:59:50,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:59:50,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-18 09:59:50,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-18 09:59:50,716 INFO L87 Difference]: Start difference. First operand has 1949 states, 1947 states have (on average 2.12788906009245) internal successors, (4143), 1948 states have internal predecessors, (4143), 0 states have call successors, (0), 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 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:59:50,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:59:50,773 INFO L93 Difference]: Finished difference Result 1877 states and 3836 transitions. [2022-01-18 09:59:50,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-18 09:59:50,775 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-01-18 09:59:50,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:59:50,801 INFO L225 Difference]: With dead ends: 1877 [2022-01-18 09:59:50,802 INFO L226 Difference]: Without dead ends: 1877 [2022-01-18 09:59:50,803 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 09:59:50,806 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 09:59:50,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 130 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 09:59:50,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2022-01-18 09:59:50,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 1877. [2022-01-18 09:59:50,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1877 states, 1875 states have (on average 2.0458666666666665) internal successors, (3836), 1876 states have internal predecessors, (3836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:59:50,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1877 states to 1877 states and 3836 transitions. [2022-01-18 09:59:50,932 INFO L78 Accepts]: Start accepts. Automaton has 1877 states and 3836 transitions. Word has length 59 [2022-01-18 09:59:50,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:59:50,933 INFO L470 AbstractCegarLoop]: Abstraction has 1877 states and 3836 transitions. [2022-01-18 09:59:50,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:59:50,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1877 states and 3836 transitions. [2022-01-18 09:59:50,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-18 09:59:50,936 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:59:50,936 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] [2022-01-18 09:59:50,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 09:59:50,936 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 09:59:50,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:59:50,937 INFO L85 PathProgramCache]: Analyzing trace with hash 326788120, now seen corresponding path program 1 times [2022-01-18 09:59:50,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:59:50,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970850457] [2022-01-18 09:59:50,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:59:50,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:59:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:59:51,118 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 09:59:51,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:59:51,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970850457] [2022-01-18 09:59:51,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970850457] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:59:51,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:59:51,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 09:59:51,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757051804] [2022-01-18 09:59:51,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:59:51,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 09:59:51,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:59:51,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 09:59:51,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-18 09:59:51,124 INFO L87 Difference]: Start difference. First operand 1877 states and 3836 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:59:51,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:59:51,587 INFO L93 Difference]: Finished difference Result 5657 states and 11744 transitions. [2022-01-18 09:59:51,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 09:59:51,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-01-18 09:59:51,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:59:51,610 INFO L225 Difference]: With dead ends: 5657 [2022-01-18 09:59:51,611 INFO L226 Difference]: Without dead ends: 5657 [2022-01-18 09:59:51,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2022-01-18 09:59:51,612 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 589 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 09:59:51,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [589 Valid, 2121 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 09:59:51,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5657 states. [2022-01-18 09:59:51,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5657 to 2135. [2022-01-18 09:59:51,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2135 states, 2133 states have (on average 2.0595405532114395) internal successors, (4393), 2134 states have internal predecessors, (4393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:59:51,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 4393 transitions. [2022-01-18 09:59:51,697 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 4393 transitions. Word has length 61 [2022-01-18 09:59:51,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:59:51,698 INFO L470 AbstractCegarLoop]: Abstraction has 2135 states and 4393 transitions. [2022-01-18 09:59:51,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:59:51,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 4393 transitions. [2022-01-18 09:59:51,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-18 09:59:51,700 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:59:51,700 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] [2022-01-18 09:59:51,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 09:59:51,700 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 09:59:51,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:59:51,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1938685600, now seen corresponding path program 1 times [2022-01-18 09:59:51,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:59:51,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712327881] [2022-01-18 09:59:51,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:59:51,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:59:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:59:51,901 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 09:59:51,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:59:51,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712327881] [2022-01-18 09:59:51,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712327881] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:59:51,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:59:51,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-18 09:59:51,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42656573] [2022-01-18 09:59:51,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:59:51,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 09:59:51,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:59:51,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 09:59:51,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-01-18 09:59:51,905 INFO L87 Difference]: Start difference. First operand 2135 states and 4393 transitions. Second operand has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:59:53,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:59:53,285 INFO L93 Difference]: Finished difference Result 6430 states and 13379 transitions. [2022-01-18 09:59:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 09:59:53,285 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-01-18 09:59:53,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:59:53,311 INFO L225 Difference]: With dead ends: 6430 [2022-01-18 09:59:53,311 INFO L226 Difference]: Without dead ends: 6430 [2022-01-18 09:59:53,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=589, Invalid=1861, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 09:59:53,313 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 1547 mSDsluCounter, 2220 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 2490 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 09:59:53,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1547 Valid, 2490 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 09:59:53,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6430 states. [2022-01-18 09:59:53,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6430 to 3623. [2022-01-18 09:59:53,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3623 states, 3621 states have (on average 2.0660038663352664) internal successors, (7481), 3622 states have internal predecessors, (7481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:59:53,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 7481 transitions. [2022-01-18 09:59:53,414 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 7481 transitions. Word has length 61 [2022-01-18 09:59:53,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:59:53,414 INFO L470 AbstractCegarLoop]: Abstraction has 3623 states and 7481 transitions. [2022-01-18 09:59:53,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.066666666666666) internal successors, (61), 15 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:59:53,414 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 7481 transitions. [2022-01-18 09:59:53,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 09:59:53,418 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:59:53,418 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] [2022-01-18 09:59:53,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 09:59:53,419 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 09:59:53,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:59:53,419 INFO L85 PathProgramCache]: Analyzing trace with hash -432958387, now seen corresponding path program 1 times [2022-01-18 09:59:53,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:59:53,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050723121] [2022-01-18 09:59:53,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:59:53,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:59:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:59:53,719 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 09:59:53,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:59:53,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050723121] [2022-01-18 09:59:53,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050723121] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:59:53,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:59:53,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 09:59:53,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247696820] [2022-01-18 09:59:53,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:59:53,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 09:59:53,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:59:53,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 09:59:53,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 09:59:53,721 INFO L87 Difference]: Start difference. First operand 3623 states and 7481 transitions. Second operand has 20 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:59:56,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:59:56,434 INFO L93 Difference]: Finished difference Result 8900 states and 18300 transitions. [2022-01-18 09:59:56,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 09:59:56,434 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 09:59:56,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:59:56,491 INFO L225 Difference]: With dead ends: 8900 [2022-01-18 09:59:56,491 INFO L226 Difference]: Without dead ends: 8900 [2022-01-18 09:59:56,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1716 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1046, Invalid=4504, Unknown=0, NotChecked=0, Total=5550 [2022-01-18 09:59:56,499 INFO L933 BasicCegarLoop]: 455 mSDtfsCounter, 3901 mSDsluCounter, 3876 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3901 SdHoareTripleChecker+Valid, 4325 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 09:59:56,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3901 Valid, 4325 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1261 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 09:59:56,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8900 states. [2022-01-18 09:59:56,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8900 to 5530. [2022-01-18 09:59:56,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5530 states, 5528 states have (on average 2.0759768451519536) internal successors, (11476), 5529 states have internal predecessors, (11476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:59:56,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5530 states to 5530 states and 11476 transitions. [2022-01-18 09:59:56,671 INFO L78 Accepts]: Start accepts. Automaton has 5530 states and 11476 transitions. Word has length 78 [2022-01-18 09:59:56,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 09:59:56,671 INFO L470 AbstractCegarLoop]: Abstraction has 5530 states and 11476 transitions. [2022-01-18 09:59:56,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:59:56,672 INFO L276 IsEmpty]: Start isEmpty. Operand 5530 states and 11476 transitions. [2022-01-18 09:59:56,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 09:59:56,675 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 09:59:56,675 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] [2022-01-18 09:59:56,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 09:59:56,676 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 09:59:56,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 09:59:56,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1900567917, now seen corresponding path program 2 times [2022-01-18 09:59:56,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 09:59:56,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453196147] [2022-01-18 09:59:56,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 09:59:56,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 09:59:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 09:59:57,004 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 09:59:57,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 09:59:57,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453196147] [2022-01-18 09:59:57,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453196147] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 09:59:57,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 09:59:57,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 09:59:57,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353254804] [2022-01-18 09:59:57,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 09:59:57,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 09:59:57,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 09:59:57,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 09:59:57,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 09:59:57,006 INFO L87 Difference]: Start difference. First operand 5530 states and 11476 transitions. Second operand has 20 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 09:59:59,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 09:59:59,882 INFO L93 Difference]: Finished difference Result 13090 states and 26982 transitions. [2022-01-18 09:59:59,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-18 09:59:59,882 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 09:59:59,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 09:59:59,916 INFO L225 Difference]: With dead ends: 13090 [2022-01-18 09:59:59,917 INFO L226 Difference]: Without dead ends: 13090 [2022-01-18 09:59:59,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2724 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1449, Invalid=6561, Unknown=0, NotChecked=0, Total=8010 [2022-01-18 09:59:59,920 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 4458 mSDsluCounter, 4270 mSDsCounter, 0 mSdLazyCounter, 1393 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4458 SdHoareTripleChecker+Valid, 4713 SdHoareTripleChecker+Invalid, 1510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 09:59:59,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4458 Valid, 4713 Invalid, 1510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1393 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 09:59:59,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13090 states. [2022-01-18 10:00:00,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13090 to 5536. [2022-01-18 10:00:00,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5536 states, 5534 states have (on average 2.0758944705457174) internal successors, (11488), 5535 states have internal predecessors, (11488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:00,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5536 states to 5536 states and 11488 transitions. [2022-01-18 10:00:00,087 INFO L78 Accepts]: Start accepts. Automaton has 5536 states and 11488 transitions. Word has length 78 [2022-01-18 10:00:00,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:00,088 INFO L470 AbstractCegarLoop]: Abstraction has 5536 states and 11488 transitions. [2022-01-18 10:00:00,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:00,089 INFO L276 IsEmpty]: Start isEmpty. Operand 5536 states and 11488 transitions. [2022-01-18 10:00:00,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 10:00:00,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:00,092 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] [2022-01-18 10:00:00,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 10:00:00,093 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:00,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:00,093 INFO L85 PathProgramCache]: Analyzing trace with hash -2057331115, now seen corresponding path program 3 times [2022-01-18 10:00:00,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:00,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861917491] [2022-01-18 10:00:00,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:00,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:00,388 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 10:00:00,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:00,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861917491] [2022-01-18 10:00:00,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861917491] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:00,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:00,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-01-18 10:00:00,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856235181] [2022-01-18 10:00:00,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:00,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 10:00:00,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:00,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 10:00:00,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2022-01-18 10:00:00,390 INFO L87 Difference]: Start difference. First operand 5536 states and 11488 transitions. Second operand has 20 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:02,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:02,969 INFO L93 Difference]: Finished difference Result 10751 states and 22152 transitions. [2022-01-18 10:00:02,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-18 10:00:02,969 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 10:00:02,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:02,989 INFO L225 Difference]: With dead ends: 10751 [2022-01-18 10:00:02,990 INFO L226 Difference]: Without dead ends: 10751 [2022-01-18 10:00:02,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1922 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1227, Invalid=4935, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 10:00:02,992 INFO L933 BasicCegarLoop]: 419 mSDtfsCounter, 4107 mSDsluCounter, 3212 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4107 SdHoareTripleChecker+Valid, 3627 SdHoareTripleChecker+Invalid, 1244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:02,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4107 Valid, 3627 Invalid, 1244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 10:00:03,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10751 states. [2022-01-18 10:00:03,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10751 to 6059. [2022-01-18 10:00:03,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6059 states, 6057 states have (on average 2.083209509658247) internal successors, (12618), 6058 states have internal predecessors, (12618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:03,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6059 states to 6059 states and 12618 transitions. [2022-01-18 10:00:03,135 INFO L78 Accepts]: Start accepts. Automaton has 6059 states and 12618 transitions. Word has length 78 [2022-01-18 10:00:03,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:03,136 INFO L470 AbstractCegarLoop]: Abstraction has 6059 states and 12618 transitions. [2022-01-18 10:00:03,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.9) internal successors, (78), 20 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:03,136 INFO L276 IsEmpty]: Start isEmpty. Operand 6059 states and 12618 transitions. [2022-01-18 10:00:03,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 10:00:03,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:03,140 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] [2022-01-18 10:00:03,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 10:00:03,140 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:03,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:03,141 INFO L85 PathProgramCache]: Analyzing trace with hash -639973645, now seen corresponding path program 1 times [2022-01-18 10:00:03,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:03,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817739720] [2022-01-18 10:00:03,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:03,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:03,371 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 10:00:03,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:03,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817739720] [2022-01-18 10:00:03,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817739720] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:03,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:03,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-18 10:00:03,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940475682] [2022-01-18 10:00:03,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:03,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 10:00:03,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:03,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 10:00:03,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-01-18 10:00:03,373 INFO L87 Difference]: Start difference. First operand 6059 states and 12618 transitions. Second operand has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:06,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:06,401 INFO L93 Difference]: Finished difference Result 15036 states and 31402 transitions. [2022-01-18 10:00:06,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-01-18 10:00:06,401 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 10:00:06,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:06,434 INFO L225 Difference]: With dead ends: 15036 [2022-01-18 10:00:06,434 INFO L226 Difference]: Without dead ends: 15036 [2022-01-18 10:00:06,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4516 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1974, Invalid=11136, Unknown=0, NotChecked=0, Total=13110 [2022-01-18 10:00:06,440 INFO L933 BasicCegarLoop]: 796 mSDtfsCounter, 1075 mSDsluCounter, 6162 mSDsCounter, 0 mSdLazyCounter, 2745 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 6955 SdHoareTripleChecker+Invalid, 2770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:06,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1075 Valid, 6955 Invalid, 2770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2745 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 10:00:06,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15036 states. [2022-01-18 10:00:06,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15036 to 6234. [2022-01-18 10:00:06,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6234 states, 6232 states have (on average 2.087772785622593) internal successors, (13011), 6233 states have internal predecessors, (13011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:06,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6234 states to 6234 states and 13011 transitions. [2022-01-18 10:00:06,616 INFO L78 Accepts]: Start accepts. Automaton has 6234 states and 13011 transitions. Word has length 78 [2022-01-18 10:00:06,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:06,616 INFO L470 AbstractCegarLoop]: Abstraction has 6234 states and 13011 transitions. [2022-01-18 10:00:06,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.2) internal successors, (78), 15 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:06,617 INFO L276 IsEmpty]: Start isEmpty. Operand 6234 states and 13011 transitions. [2022-01-18 10:00:06,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 10:00:06,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:06,622 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] [2022-01-18 10:00:06,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 10:00:06,623 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:06,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:06,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1389519931, now seen corresponding path program 4 times [2022-01-18 10:00:06,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:06,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119713590] [2022-01-18 10:00:06,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:06,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:06,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:06,787 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 10:00:06,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:06,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119713590] [2022-01-18 10:00:06,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119713590] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:06,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:06,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 10:00:06,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132515387] [2022-01-18 10:00:06,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:06,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 10:00:06,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:06,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 10:00:06,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 10:00:06,789 INFO L87 Difference]: Start difference. First operand 6234 states and 13011 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:06,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:06,972 INFO L93 Difference]: Finished difference Result 8278 states and 17240 transitions. [2022-01-18 10:00:06,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 10:00:06,973 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 10:00:06,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:06,984 INFO L225 Difference]: With dead ends: 8278 [2022-01-18 10:00:06,984 INFO L226 Difference]: Without dead ends: 8278 [2022-01-18 10:00:06,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-01-18 10:00:06,985 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 388 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 1065 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:06,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 1065 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 10:00:06,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8278 states. [2022-01-18 10:00:07,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8278 to 6575. [2022-01-18 10:00:07,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6575 states, 6573 states have (on average 2.0827628175870987) internal successors, (13690), 6574 states have internal predecessors, (13690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:07,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6575 states to 6575 states and 13690 transitions. [2022-01-18 10:00:07,104 INFO L78 Accepts]: Start accepts. Automaton has 6575 states and 13690 transitions. Word has length 78 [2022-01-18 10:00:07,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:07,104 INFO L470 AbstractCegarLoop]: Abstraction has 6575 states and 13690 transitions. [2022-01-18 10:00:07,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:07,105 INFO L276 IsEmpty]: Start isEmpty. Operand 6575 states and 13690 transitions. [2022-01-18 10:00:07,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 10:00:07,108 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:07,109 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] [2022-01-18 10:00:07,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 10:00:07,109 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:07,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:07,109 INFO L85 PathProgramCache]: Analyzing trace with hash -230993537, now seen corresponding path program 2 times [2022-01-18 10:00:07,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:07,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757911263] [2022-01-18 10:00:07,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:07,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:07,322 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 10:00:07,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:07,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757911263] [2022-01-18 10:00:07,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757911263] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:07,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:07,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-18 10:00:07,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318397552] [2022-01-18 10:00:07,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:07,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 10:00:07,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:07,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 10:00:07,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-01-18 10:00:07,324 INFO L87 Difference]: Start difference. First operand 6575 states and 13690 transitions. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:10,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:10,100 INFO L93 Difference]: Finished difference Result 32822 states and 68435 transitions. [2022-01-18 10:00:10,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-01-18 10:00:10,101 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 10:00:10,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:10,160 INFO L225 Difference]: With dead ends: 32822 [2022-01-18 10:00:10,161 INFO L226 Difference]: Without dead ends: 32822 [2022-01-18 10:00:10,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4202 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2129, Invalid=9643, Unknown=0, NotChecked=0, Total=11772 [2022-01-18 10:00:10,164 INFO L933 BasicCegarLoop]: 681 mSDtfsCounter, 1649 mSDsluCounter, 5316 mSDsCounter, 0 mSdLazyCounter, 2029 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 5995 SdHoareTripleChecker+Invalid, 2094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 2029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:10,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1649 Valid, 5995 Invalid, 2094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 2029 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 10:00:10,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32822 states. [2022-01-18 10:00:10,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32822 to 6832. [2022-01-18 10:00:10,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6832 states, 6830 states have (on average 2.0865300146412884) internal successors, (14251), 6831 states have internal predecessors, (14251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:10,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6832 states to 6832 states and 14251 transitions. [2022-01-18 10:00:10,465 INFO L78 Accepts]: Start accepts. Automaton has 6832 states and 14251 transitions. Word has length 78 [2022-01-18 10:00:10,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:10,465 INFO L470 AbstractCegarLoop]: Abstraction has 6832 states and 14251 transitions. [2022-01-18 10:00:10,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:10,465 INFO L276 IsEmpty]: Start isEmpty. Operand 6832 states and 14251 transitions. [2022-01-18 10:00:10,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 10:00:10,469 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:10,469 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] [2022-01-18 10:00:10,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 10:00:10,469 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:10,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:10,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1798500039, now seen corresponding path program 5 times [2022-01-18 10:00:10,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:10,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766214254] [2022-01-18 10:00:10,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:10,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:10,578 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 10:00:10,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:10,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766214254] [2022-01-18 10:00:10,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766214254] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:10,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:10,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 10:00:10,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638785993] [2022-01-18 10:00:10,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:10,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 10:00:10,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:10,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 10:00:10,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 10:00:10,580 INFO L87 Difference]: Start difference. First operand 6832 states and 14251 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:10,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:10,805 INFO L93 Difference]: Finished difference Result 13224 states and 27405 transitions. [2022-01-18 10:00:10,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 10:00:10,805 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 10:00:10,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:10,828 INFO L225 Difference]: With dead ends: 13224 [2022-01-18 10:00:10,828 INFO L226 Difference]: Without dead ends: 13224 [2022-01-18 10:00:10,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-01-18 10:00:10,829 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 587 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:10,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 1230 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 10:00:10,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13224 states. [2022-01-18 10:00:11,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13224 to 6881. [2022-01-18 10:00:11,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6881 states, 6878 states have (on average 2.0754579819715033) internal successors, (14275), 6880 states have internal predecessors, (14275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:11,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6881 states to 6881 states and 14275 transitions. [2022-01-18 10:00:11,020 INFO L78 Accepts]: Start accepts. Automaton has 6881 states and 14275 transitions. Word has length 78 [2022-01-18 10:00:11,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:11,021 INFO L470 AbstractCegarLoop]: Abstraction has 6881 states and 14275 transitions. [2022-01-18 10:00:11,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:11,021 INFO L276 IsEmpty]: Start isEmpty. Operand 6881 states and 14275 transitions. [2022-01-18 10:00:11,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 10:00:11,025 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:11,026 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] [2022-01-18 10:00:11,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 10:00:11,026 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:11,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:11,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1210081927, now seen corresponding path program 6 times [2022-01-18 10:00:11,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:11,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409827388] [2022-01-18 10:00:11,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:11,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:11,157 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 10:00:11,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:11,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409827388] [2022-01-18 10:00:11,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409827388] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:11,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:11,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 10:00:11,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227190996] [2022-01-18 10:00:11,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:11,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 10:00:11,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:11,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 10:00:11,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 10:00:11,160 INFO L87 Difference]: Start difference. First operand 6881 states and 14275 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:11,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:11,315 INFO L93 Difference]: Finished difference Result 11923 states and 24660 transitions. [2022-01-18 10:00:11,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 10:00:11,316 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 10:00:11,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:11,328 INFO L225 Difference]: With dead ends: 11923 [2022-01-18 10:00:11,328 INFO L226 Difference]: Without dead ends: 11923 [2022-01-18 10:00:11,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-01-18 10:00:11,329 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 386 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:11,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 1048 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 10:00:11,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11923 states. [2022-01-18 10:00:11,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11923 to 6881. [2022-01-18 10:00:11,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6881 states, 6878 states have (on average 2.0754579819715033) internal successors, (14275), 6880 states have internal predecessors, (14275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:11,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6881 states to 6881 states and 14275 transitions. [2022-01-18 10:00:11,459 INFO L78 Accepts]: Start accepts. Automaton has 6881 states and 14275 transitions. Word has length 78 [2022-01-18 10:00:11,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:11,459 INFO L470 AbstractCegarLoop]: Abstraction has 6881 states and 14275 transitions. [2022-01-18 10:00:11,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:11,459 INFO L276 IsEmpty]: Start isEmpty. Operand 6881 states and 14275 transitions. [2022-01-18 10:00:11,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 10:00:11,463 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:11,463 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] [2022-01-18 10:00:11,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-18 10:00:11,463 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:11,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:11,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1470511061, now seen corresponding path program 3 times [2022-01-18 10:00:11,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:11,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412653831] [2022-01-18 10:00:11,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:11,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:11,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:11,671 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 10:00:11,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:11,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412653831] [2022-01-18 10:00:11,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412653831] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:11,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:11,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-18 10:00:11,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286852213] [2022-01-18 10:00:11,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:11,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 10:00:11,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:11,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 10:00:11,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-01-18 10:00:11,673 INFO L87 Difference]: Start difference. First operand 6881 states and 14275 transitions. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:14,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:14,548 INFO L93 Difference]: Finished difference Result 46267 states and 96712 transitions. [2022-01-18 10:00:14,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2022-01-18 10:00:14,548 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 10:00:14,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:14,621 INFO L225 Difference]: With dead ends: 46267 [2022-01-18 10:00:14,621 INFO L226 Difference]: Without dead ends: 46267 [2022-01-18 10:00:14,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3963 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=2137, Invalid=9205, Unknown=0, NotChecked=0, Total=11342 [2022-01-18 10:00:14,625 INFO L933 BasicCegarLoop]: 732 mSDtfsCounter, 1440 mSDsluCounter, 6551 mSDsCounter, 0 mSdLazyCounter, 2466 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 7282 SdHoareTripleChecker+Invalid, 2521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:14,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1440 Valid, 7282 Invalid, 2521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2466 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 10:00:14,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46267 states. [2022-01-18 10:00:14,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46267 to 7282. [2022-01-18 10:00:14,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7282 states, 7279 states have (on average 2.0839401016623165) internal successors, (15169), 7281 states have internal predecessors, (15169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:14,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7282 states to 7282 states and 15169 transitions. [2022-01-18 10:00:14,969 INFO L78 Accepts]: Start accepts. Automaton has 7282 states and 15169 transitions. Word has length 78 [2022-01-18 10:00:14,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:14,969 INFO L470 AbstractCegarLoop]: Abstraction has 7282 states and 15169 transitions. [2022-01-18 10:00:14,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:14,970 INFO L276 IsEmpty]: Start isEmpty. Operand 7282 states and 15169 transitions. [2022-01-18 10:00:14,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 10:00:14,974 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:14,974 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] [2022-01-18 10:00:14,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-18 10:00:14,974 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:14,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:14,975 INFO L85 PathProgramCache]: Analyzing trace with hash -794962659, now seen corresponding path program 7 times [2022-01-18 10:00:14,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:14,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213959282] [2022-01-18 10:00:14,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:14,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:15,074 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 10:00:15,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:15,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213959282] [2022-01-18 10:00:15,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213959282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:15,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:15,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 10:00:15,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313002447] [2022-01-18 10:00:15,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:15,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 10:00:15,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:15,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 10:00:15,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 10:00:15,076 INFO L87 Difference]: Start difference. First operand 7282 states and 15169 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:15,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:15,294 INFO L93 Difference]: Finished difference Result 22479 states and 46559 transitions. [2022-01-18 10:00:15,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 10:00:15,294 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 10:00:15,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:15,323 INFO L225 Difference]: With dead ends: 22479 [2022-01-18 10:00:15,324 INFO L226 Difference]: Without dead ends: 22479 [2022-01-18 10:00:15,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 10:00:15,324 INFO L933 BasicCegarLoop]: 327 mSDtfsCounter, 653 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:15,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [653 Valid, 1096 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 10:00:15,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22479 states. [2022-01-18 10:00:15,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22479 to 7257. [2022-01-18 10:00:15,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7257 states, 7254 states have (on average 2.0818858560794045) internal successors, (15102), 7256 states have internal predecessors, (15102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:15,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7257 states to 7257 states and 15102 transitions. [2022-01-18 10:00:15,478 INFO L78 Accepts]: Start accepts. Automaton has 7257 states and 15102 transitions. Word has length 78 [2022-01-18 10:00:15,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:15,479 INFO L470 AbstractCegarLoop]: Abstraction has 7257 states and 15102 transitions. [2022-01-18 10:00:15,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:15,479 INFO L276 IsEmpty]: Start isEmpty. Operand 7257 states and 15102 transitions. [2022-01-18 10:00:15,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 10:00:15,483 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:15,483 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] [2022-01-18 10:00:15,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-18 10:00:15,483 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:15,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:15,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1383380771, now seen corresponding path program 8 times [2022-01-18 10:00:15,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:15,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007238296] [2022-01-18 10:00:15,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:15,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:15,581 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 10:00:15,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:15,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007238296] [2022-01-18 10:00:15,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007238296] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:15,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:15,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 10:00:15,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427359464] [2022-01-18 10:00:15,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:15,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 10:00:15,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:15,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 10:00:15,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 10:00:15,583 INFO L87 Difference]: Start difference. First operand 7257 states and 15102 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:15,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:15,808 INFO L93 Difference]: Finished difference Result 17765 states and 36818 transitions. [2022-01-18 10:00:15,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 10:00:15,808 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 10:00:15,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:15,838 INFO L225 Difference]: With dead ends: 17765 [2022-01-18 10:00:15,838 INFO L226 Difference]: Without dead ends: 17765 [2022-01-18 10:00:15,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 10:00:15,839 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 446 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:15,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 1151 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 10:00:15,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17765 states. [2022-01-18 10:00:16,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17765 to 7164. [2022-01-18 10:00:16,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7164 states, 7161 states have (on average 2.079318530931434) internal successors, (14890), 7163 states have internal predecessors, (14890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:16,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7164 states to 7164 states and 14890 transitions. [2022-01-18 10:00:16,030 INFO L78 Accepts]: Start accepts. Automaton has 7164 states and 14890 transitions. Word has length 78 [2022-01-18 10:00:16,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:16,031 INFO L470 AbstractCegarLoop]: Abstraction has 7164 states and 14890 transitions. [2022-01-18 10:00:16,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:16,031 INFO L276 IsEmpty]: Start isEmpty. Operand 7164 states and 14890 transitions. [2022-01-18 10:00:16,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 10:00:16,034 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:16,034 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] [2022-01-18 10:00:16,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-18 10:00:16,034 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:16,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:16,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1994881031, now seen corresponding path program 4 times [2022-01-18 10:00:16,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:16,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419824780] [2022-01-18 10:00:16,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:16,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:16,242 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 10:00:16,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:16,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419824780] [2022-01-18 10:00:16,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419824780] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:16,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:16,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-18 10:00:16,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302611127] [2022-01-18 10:00:16,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:16,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 10:00:16,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:16,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 10:00:16,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-01-18 10:00:16,244 INFO L87 Difference]: Start difference. First operand 7164 states and 14890 transitions. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:19,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:19,349 INFO L93 Difference]: Finished difference Result 35183 states and 73664 transitions. [2022-01-18 10:00:19,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-18 10:00:19,349 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 10:00:19,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:19,396 INFO L225 Difference]: With dead ends: 35183 [2022-01-18 10:00:19,396 INFO L226 Difference]: Without dead ends: 35183 [2022-01-18 10:00:19,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2865 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1874, Invalid=7246, Unknown=0, NotChecked=0, Total=9120 [2022-01-18 10:00:19,399 INFO L933 BasicCegarLoop]: 737 mSDtfsCounter, 1287 mSDsluCounter, 5017 mSDsCounter, 0 mSdLazyCounter, 1966 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1287 SdHoareTripleChecker+Valid, 5753 SdHoareTripleChecker+Invalid, 2018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:19,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1287 Valid, 5753 Invalid, 2018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1966 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 10:00:19,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35183 states. [2022-01-18 10:00:19,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35183 to 8219. [2022-01-18 10:00:19,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8219 states, 8216 states have (on average 2.0978578383641673) internal successors, (17236), 8218 states have internal predecessors, (17236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:19,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8219 states to 8219 states and 17236 transitions. [2022-01-18 10:00:19,625 INFO L78 Accepts]: Start accepts. Automaton has 8219 states and 17236 transitions. Word has length 78 [2022-01-18 10:00:19,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:19,625 INFO L470 AbstractCegarLoop]: Abstraction has 8219 states and 17236 transitions. [2022-01-18 10:00:19,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:19,625 INFO L276 IsEmpty]: Start isEmpty. Operand 8219 states and 17236 transitions. [2022-01-18 10:00:19,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 10:00:19,629 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:19,629 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] [2022-01-18 10:00:19,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-18 10:00:19,630 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:19,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:19,630 INFO L85 PathProgramCache]: Analyzing trace with hash 34612545, now seen corresponding path program 9 times [2022-01-18 10:00:19,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:19,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269144512] [2022-01-18 10:00:19,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:19,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:19,721 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 10:00:19,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:19,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269144512] [2022-01-18 10:00:19,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269144512] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:19,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:19,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 10:00:19,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891715013] [2022-01-18 10:00:19,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:19,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 10:00:19,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:19,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 10:00:19,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 10:00:19,722 INFO L87 Difference]: Start difference. First operand 8219 states and 17236 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:19,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:19,919 INFO L93 Difference]: Finished difference Result 17751 states and 36797 transitions. [2022-01-18 10:00:19,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 10:00:19,919 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 10:00:19,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:19,940 INFO L225 Difference]: With dead ends: 17751 [2022-01-18 10:00:19,940 INFO L226 Difference]: Without dead ends: 17751 [2022-01-18 10:00:19,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 10:00:19,941 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 524 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:19,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 1261 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 10:00:19,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17751 states. [2022-01-18 10:00:20,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17751 to 8195. [2022-01-18 10:00:20,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8195 states, 8192 states have (on average 2.097900390625) internal successors, (17186), 8194 states have internal predecessors, (17186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:20,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8195 states to 8195 states and 17186 transitions. [2022-01-18 10:00:20,117 INFO L78 Accepts]: Start accepts. Automaton has 8195 states and 17186 transitions. Word has length 78 [2022-01-18 10:00:20,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:20,117 INFO L470 AbstractCegarLoop]: Abstraction has 8195 states and 17186 transitions. [2022-01-18 10:00:20,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:20,117 INFO L276 IsEmpty]: Start isEmpty. Operand 8195 states and 17186 transitions. [2022-01-18 10:00:20,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 10:00:20,121 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:20,121 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] [2022-01-18 10:00:20,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-18 10:00:20,122 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:20,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:20,122 INFO L85 PathProgramCache]: Analyzing trace with hash 642429283, now seen corresponding path program 10 times [2022-01-18 10:00:20,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:20,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463620539] [2022-01-18 10:00:20,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:20,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:20,228 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 10:00:20,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:20,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463620539] [2022-01-18 10:00:20,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463620539] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:20,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:20,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 10:00:20,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002998542] [2022-01-18 10:00:20,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:20,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 10:00:20,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:20,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 10:00:20,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 10:00:20,230 INFO L87 Difference]: Start difference. First operand 8195 states and 17186 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:20,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:20,454 INFO L93 Difference]: Finished difference Result 14050 states and 29137 transitions. [2022-01-18 10:00:20,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 10:00:20,455 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 10:00:20,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:20,480 INFO L225 Difference]: With dead ends: 14050 [2022-01-18 10:00:20,480 INFO L226 Difference]: Without dead ends: 14050 [2022-01-18 10:00:20,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 10:00:20,481 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 549 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:20,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [549 Valid, 1052 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 10:00:20,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14050 states. [2022-01-18 10:00:20,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14050 to 9098. [2022-01-18 10:00:20,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9098 states, 9095 states have (on average 2.102363936228697) internal successors, (19121), 9097 states have internal predecessors, (19121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:20,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9098 states to 9098 states and 19121 transitions. [2022-01-18 10:00:20,656 INFO L78 Accepts]: Start accepts. Automaton has 9098 states and 19121 transitions. Word has length 78 [2022-01-18 10:00:20,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:20,656 INFO L470 AbstractCegarLoop]: Abstraction has 9098 states and 19121 transitions. [2022-01-18 10:00:20,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:20,657 INFO L276 IsEmpty]: Start isEmpty. Operand 9098 states and 19121 transitions. [2022-01-18 10:00:20,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 10:00:20,660 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:20,660 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] [2022-01-18 10:00:20,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-18 10:00:20,661 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:20,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:20,661 INFO L85 PathProgramCache]: Analyzing trace with hash -655223041, now seen corresponding path program 5 times [2022-01-18 10:00:20,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:20,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682463266] [2022-01-18 10:00:20,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:20,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:20,857 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 10:00:20,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:20,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682463266] [2022-01-18 10:00:20,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682463266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:20,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:20,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-18 10:00:20,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068553454] [2022-01-18 10:00:20,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:20,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 10:00:20,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:20,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 10:00:20,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-01-18 10:00:20,859 INFO L87 Difference]: Start difference. First operand 9098 states and 19121 transitions. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:23,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:23,431 INFO L93 Difference]: Finished difference Result 42338 states and 88537 transitions. [2022-01-18 10:00:23,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2022-01-18 10:00:23,431 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 10:00:23,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:23,491 INFO L225 Difference]: With dead ends: 42338 [2022-01-18 10:00:23,492 INFO L226 Difference]: Without dead ends: 42338 [2022-01-18 10:00:23,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3907 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2137, Invalid=9205, Unknown=0, NotChecked=0, Total=11342 [2022-01-18 10:00:23,493 INFO L933 BasicCegarLoop]: 734 mSDtfsCounter, 1392 mSDsluCounter, 5329 mSDsCounter, 0 mSdLazyCounter, 1879 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1392 SdHoareTripleChecker+Valid, 6063 SdHoareTripleChecker+Invalid, 1935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:23,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1392 Valid, 6063 Invalid, 1935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1879 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 10:00:23,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42338 states. [2022-01-18 10:00:23,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42338 to 9356. [2022-01-18 10:00:23,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9356 states, 9353 states have (on average 2.106382978723404) internal successors, (19701), 9355 states have internal predecessors, (19701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:23,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9356 states to 9356 states and 19701 transitions. [2022-01-18 10:00:23,797 INFO L78 Accepts]: Start accepts. Automaton has 9356 states and 19701 transitions. Word has length 78 [2022-01-18 10:00:23,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:23,797 INFO L470 AbstractCegarLoop]: Abstraction has 9356 states and 19701 transitions. [2022-01-18 10:00:23,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:23,797 INFO L276 IsEmpty]: Start isEmpty. Operand 9356 states and 19701 transitions. [2022-01-18 10:00:23,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 10:00:23,801 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:23,801 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] [2022-01-18 10:00:23,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-18 10:00:23,801 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:23,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:23,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1374270535, now seen corresponding path program 11 times [2022-01-18 10:00:23,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:23,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720171538] [2022-01-18 10:00:23,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:23,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:23,894 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 10:00:23,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:23,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720171538] [2022-01-18 10:00:23,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720171538] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:23,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:23,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 10:00:23,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538775575] [2022-01-18 10:00:23,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:23,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 10:00:23,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:23,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 10:00:23,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 10:00:23,896 INFO L87 Difference]: Start difference. First operand 9356 states and 19701 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:24,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:24,176 INFO L93 Difference]: Finished difference Result 19573 states and 40679 transitions. [2022-01-18 10:00:24,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 10:00:24,176 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 10:00:24,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:24,286 INFO L225 Difference]: With dead ends: 19573 [2022-01-18 10:00:24,287 INFO L226 Difference]: Without dead ends: 19573 [2022-01-18 10:00:24,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 10:00:24,287 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 506 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:24,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [506 Valid, 1263 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 10:00:24,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19573 states. [2022-01-18 10:00:24,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19573 to 9370. [2022-01-18 10:00:24,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9370 states, 9367 states have (on average 2.103448275862069) internal successors, (19703), 9369 states have internal predecessors, (19703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:24,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9370 states to 9370 states and 19703 transitions. [2022-01-18 10:00:24,435 INFO L78 Accepts]: Start accepts. Automaton has 9370 states and 19703 transitions. Word has length 78 [2022-01-18 10:00:24,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:24,436 INFO L470 AbstractCegarLoop]: Abstraction has 9370 states and 19703 transitions. [2022-01-18 10:00:24,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:24,436 INFO L276 IsEmpty]: Start isEmpty. Operand 9370 states and 19703 transitions. [2022-01-18 10:00:24,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 10:00:24,440 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:24,440 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] [2022-01-18 10:00:24,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-18 10:00:24,440 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:24,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:24,441 INFO L85 PathProgramCache]: Analyzing trace with hash 785852423, now seen corresponding path program 12 times [2022-01-18 10:00:24,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:24,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060256848] [2022-01-18 10:00:24,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:24,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:24,557 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 10:00:24,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:24,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060256848] [2022-01-18 10:00:24,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060256848] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:24,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:24,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 10:00:24,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213029751] [2022-01-18 10:00:24,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:24,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 10:00:24,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:24,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 10:00:24,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 10:00:24,559 INFO L87 Difference]: Start difference. First operand 9370 states and 19703 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:24,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:24,766 INFO L93 Difference]: Finished difference Result 13098 states and 27206 transitions. [2022-01-18 10:00:24,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 10:00:24,767 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 10:00:24,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:24,783 INFO L225 Difference]: With dead ends: 13098 [2022-01-18 10:00:24,783 INFO L226 Difference]: Without dead ends: 13098 [2022-01-18 10:00:24,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 10:00:24,784 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 380 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:24,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 1270 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 10:00:24,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13098 states. [2022-01-18 10:00:24,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13098 to 9142. [2022-01-18 10:00:24,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9142 states, 9139 states have (on average 2.0995732574679944) internal successors, (19188), 9141 states have internal predecessors, (19188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:24,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9142 states to 9142 states and 19188 transitions. [2022-01-18 10:00:24,898 INFO L78 Accepts]: Start accepts. Automaton has 9142 states and 19188 transitions. Word has length 78 [2022-01-18 10:00:24,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:24,898 INFO L470 AbstractCegarLoop]: Abstraction has 9142 states and 19188 transitions. [2022-01-18 10:00:24,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:24,898 INFO L276 IsEmpty]: Start isEmpty. Operand 9142 states and 19188 transitions. [2022-01-18 10:00:24,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 10:00:24,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:24,902 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] [2022-01-18 10:00:24,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-18 10:00:24,902 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:24,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:24,903 INFO L85 PathProgramCache]: Analyzing trace with hash 174352163, now seen corresponding path program 6 times [2022-01-18 10:00:24,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:24,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475774130] [2022-01-18 10:00:24,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:24,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:24,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:25,133 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 10:00:25,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:25,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475774130] [2022-01-18 10:00:25,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475774130] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:25,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:25,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-18 10:00:25,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980648631] [2022-01-18 10:00:25,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:25,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 10:00:25,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:25,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 10:00:25,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-01-18 10:00:25,135 INFO L87 Difference]: Start difference. First operand 9142 states and 19188 transitions. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:28,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:28,268 INFO L93 Difference]: Finished difference Result 45515 states and 95261 transitions. [2022-01-18 10:00:28,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-01-18 10:00:28,275 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 10:00:28,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:28,361 INFO L225 Difference]: With dead ends: 45515 [2022-01-18 10:00:28,361 INFO L226 Difference]: Without dead ends: 45515 [2022-01-18 10:00:28,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2801 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1874, Invalid=7246, Unknown=0, NotChecked=0, Total=9120 [2022-01-18 10:00:28,363 INFO L933 BasicCegarLoop]: 778 mSDtfsCounter, 1180 mSDsluCounter, 6158 mSDsCounter, 0 mSdLazyCounter, 2412 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 6936 SdHoareTripleChecker+Invalid, 2457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:28,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1180 Valid, 6936 Invalid, 2457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 2412 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-18 10:00:28,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45515 states. [2022-01-18 10:00:28,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45515 to 9322. [2022-01-18 10:00:28,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9322 states, 9319 states have (on average 2.0995815001609617) internal successors, (19566), 9321 states have internal predecessors, (19566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:28,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9322 states to 9322 states and 19566 transitions. [2022-01-18 10:00:28,795 INFO L78 Accepts]: Start accepts. Automaton has 9322 states and 19566 transitions. Word has length 78 [2022-01-18 10:00:28,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:28,795 INFO L470 AbstractCegarLoop]: Abstraction has 9322 states and 19566 transitions. [2022-01-18 10:00:28,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:28,795 INFO L276 IsEmpty]: Start isEmpty. Operand 9322 states and 19566 transitions. [2022-01-18 10:00:28,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 10:00:28,798 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:28,798 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] [2022-01-18 10:00:28,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-18 10:00:28,799 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:28,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:28,799 INFO L85 PathProgramCache]: Analyzing trace with hash -2091121557, now seen corresponding path program 13 times [2022-01-18 10:00:28,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:28,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763398821] [2022-01-18 10:00:28,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:28,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:28,901 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 10:00:28,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:28,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763398821] [2022-01-18 10:00:28,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763398821] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:28,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:28,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 10:00:28,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916906168] [2022-01-18 10:00:28,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:28,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 10:00:28,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:28,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 10:00:28,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 10:00:28,905 INFO L87 Difference]: Start difference. First operand 9322 states and 19566 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:29,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:29,148 INFO L93 Difference]: Finished difference Result 23356 states and 48220 transitions. [2022-01-18 10:00:29,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 10:00:29,149 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 10:00:29,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:29,179 INFO L225 Difference]: With dead ends: 23356 [2022-01-18 10:00:29,179 INFO L226 Difference]: Without dead ends: 23356 [2022-01-18 10:00:29,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 10:00:29,180 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 559 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 1292 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:29,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [559 Valid, 1292 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 10:00:29,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23356 states. [2022-01-18 10:00:29,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23356 to 9258. [2022-01-18 10:00:29,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9258 states, 9255 states have (on average 2.099837925445705) internal successors, (19434), 9257 states have internal predecessors, (19434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:29,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9258 states to 9258 states and 19434 transitions. [2022-01-18 10:00:29,370 INFO L78 Accepts]: Start accepts. Automaton has 9258 states and 19434 transitions. Word has length 78 [2022-01-18 10:00:29,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:29,370 INFO L470 AbstractCegarLoop]: Abstraction has 9258 states and 19434 transitions. [2022-01-18 10:00:29,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:29,371 INFO L276 IsEmpty]: Start isEmpty. Operand 9258 states and 19434 transitions. [2022-01-18 10:00:29,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 10:00:29,374 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:29,374 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] [2022-01-18 10:00:29,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-18 10:00:29,375 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:29,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:29,375 INFO L85 PathProgramCache]: Analyzing trace with hash -1483304819, now seen corresponding path program 14 times [2022-01-18 10:00:29,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:29,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106344464] [2022-01-18 10:00:29,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:29,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:29,467 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 10:00:29,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:29,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106344464] [2022-01-18 10:00:29,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106344464] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:29,468 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:29,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 10:00:29,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869713443] [2022-01-18 10:00:29,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:29,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 10:00:29,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:29,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 10:00:29,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 10:00:29,469 INFO L87 Difference]: Start difference. First operand 9258 states and 19434 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:29,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:29,710 INFO L93 Difference]: Finished difference Result 18644 states and 38505 transitions. [2022-01-18 10:00:29,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 10:00:29,710 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 10:00:29,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:29,733 INFO L225 Difference]: With dead ends: 18644 [2022-01-18 10:00:29,733 INFO L226 Difference]: Without dead ends: 18644 [2022-01-18 10:00:29,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 10:00:29,734 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 480 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:29,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 1270 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 10:00:29,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18644 states. [2022-01-18 10:00:29,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18644 to 8909. [2022-01-18 10:00:29,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8909 states, 8906 states have (on average 2.103188861441725) internal successors, (18731), 8908 states have internal predecessors, (18731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:29,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8909 states to 8909 states and 18731 transitions. [2022-01-18 10:00:29,872 INFO L78 Accepts]: Start accepts. Automaton has 8909 states and 18731 transitions. Word has length 78 [2022-01-18 10:00:29,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:29,872 INFO L470 AbstractCegarLoop]: Abstraction has 8909 states and 18731 transitions. [2022-01-18 10:00:29,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:29,873 INFO L276 IsEmpty]: Start isEmpty. Operand 8909 states and 18731 transitions. [2022-01-18 10:00:29,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 10:00:29,875 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:29,875 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] [2022-01-18 10:00:29,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-18 10:00:29,875 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:29,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:29,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1269523329, now seen corresponding path program 7 times [2022-01-18 10:00:29,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:29,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543713346] [2022-01-18 10:00:29,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:29,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:30,073 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 10:00:30,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:30,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543713346] [2022-01-18 10:00:30,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543713346] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:30,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:30,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-01-18 10:00:30,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152573059] [2022-01-18 10:00:30,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:30,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 10:00:30,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:30,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 10:00:30,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-01-18 10:00:30,075 INFO L87 Difference]: Start difference. First operand 8909 states and 18731 transitions. Second operand has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:33,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:33,078 INFO L93 Difference]: Finished difference Result 33119 states and 69705 transitions. [2022-01-18 10:00:33,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-18 10:00:33,079 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 10:00:33,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:33,130 INFO L225 Difference]: With dead ends: 33119 [2022-01-18 10:00:33,130 INFO L226 Difference]: Without dead ends: 33119 [2022-01-18 10:00:33,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2895 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1905, Invalid=7407, Unknown=0, NotChecked=0, Total=9312 [2022-01-18 10:00:33,132 INFO L933 BasicCegarLoop]: 751 mSDtfsCounter, 1159 mSDsluCounter, 5643 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 6394 SdHoareTripleChecker+Invalid, 2347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 2305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:33,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1159 Valid, 6394 Invalid, 2347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 2305 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 10:00:33,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33119 states. [2022-01-18 10:00:33,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33119 to 7895. [2022-01-18 10:00:33,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7895 states, 7892 states have (on average 2.087430309173847) internal successors, (16474), 7894 states have internal predecessors, (16474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:33,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7895 states to 7895 states and 16474 transitions. [2022-01-18 10:00:33,364 INFO L78 Accepts]: Start accepts. Automaton has 7895 states and 16474 transitions. Word has length 78 [2022-01-18 10:00:33,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:33,365 INFO L470 AbstractCegarLoop]: Abstraction has 7895 states and 16474 transitions. [2022-01-18 10:00:33,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.875) internal successors, (78), 16 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:33,365 INFO L276 IsEmpty]: Start isEmpty. Operand 7895 states and 16474 transitions. [2022-01-18 10:00:33,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 10:00:33,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:33,367 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] [2022-01-18 10:00:33,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-18 10:00:33,367 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:33,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:33,368 INFO L85 PathProgramCache]: Analyzing trace with hash 759970247, now seen corresponding path program 15 times [2022-01-18 10:00:33,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:33,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341493482] [2022-01-18 10:00:33,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:33,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:33,478 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 10:00:33,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:33,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341493482] [2022-01-18 10:00:33,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341493482] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:33,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:33,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 10:00:33,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120209106] [2022-01-18 10:00:33,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:33,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 10:00:33,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:33,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 10:00:33,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 10:00:33,480 INFO L87 Difference]: Start difference. First operand 7895 states and 16474 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:33,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:33,709 INFO L93 Difference]: Finished difference Result 15260 states and 31594 transitions. [2022-01-18 10:00:33,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 10:00:33,709 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 10:00:33,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:33,728 INFO L225 Difference]: With dead ends: 15260 [2022-01-18 10:00:33,729 INFO L226 Difference]: Without dead ends: 15260 [2022-01-18 10:00:33,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-01-18 10:00:33,729 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 480 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:33,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 1137 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 10:00:33,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15260 states. [2022-01-18 10:00:33,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15260 to 7887. [2022-01-18 10:00:33,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7887 states, 7884 states have (on average 2.084348046676814) internal successors, (16433), 7886 states have internal predecessors, (16433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:33,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7887 states to 7887 states and 16433 transitions. [2022-01-18 10:00:33,864 INFO L78 Accepts]: Start accepts. Automaton has 7887 states and 16433 transitions. Word has length 78 [2022-01-18 10:00:33,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:33,864 INFO L470 AbstractCegarLoop]: Abstraction has 7887 states and 16433 transitions. [2022-01-18 10:00:33,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:33,864 INFO L276 IsEmpty]: Start isEmpty. Operand 7887 states and 16433 transitions. [2022-01-18 10:00:33,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 10:00:33,867 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:33,867 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] [2022-01-18 10:00:33,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-18 10:00:33,868 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:33,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:33,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1367786985, now seen corresponding path program 16 times [2022-01-18 10:00:33,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:33,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091424620] [2022-01-18 10:00:33,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:33,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:33,965 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 10:00:33,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:33,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091424620] [2022-01-18 10:00:33,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091424620] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:33,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:33,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 10:00:33,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261740349] [2022-01-18 10:00:33,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:33,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 10:00:33,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:33,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 10:00:33,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 10:00:33,967 INFO L87 Difference]: Start difference. First operand 7887 states and 16433 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:34,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:34,153 INFO L93 Difference]: Finished difference Result 15277 states and 31545 transitions. [2022-01-18 10:00:34,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 10:00:34,154 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 10:00:34,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:34,172 INFO L225 Difference]: With dead ends: 15277 [2022-01-18 10:00:34,172 INFO L226 Difference]: Without dead ends: 15277 [2022-01-18 10:00:34,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-01-18 10:00:34,173 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 419 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:34,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [419 Valid, 977 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 10:00:34,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15277 states. [2022-01-18 10:00:34,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15277 to 7769. [2022-01-18 10:00:34,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7769 states, 7766 states have (on average 2.087818696883853) internal successors, (16214), 7768 states have internal predecessors, (16214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:34,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7769 states to 7769 states and 16214 transitions. [2022-01-18 10:00:34,282 INFO L78 Accepts]: Start accepts. Automaton has 7769 states and 16214 transitions. Word has length 78 [2022-01-18 10:00:34,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:34,282 INFO L470 AbstractCegarLoop]: Abstraction has 7769 states and 16214 transitions. [2022-01-18 10:00:34,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:34,282 INFO L276 IsEmpty]: Start isEmpty. Operand 7769 states and 16214 transitions. [2022-01-18 10:00:34,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-18 10:00:34,285 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:34,285 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] [2022-01-18 10:00:34,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-18 10:00:34,285 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:34,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:34,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1877525063, now seen corresponding path program 17 times [2022-01-18 10:00:34,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:34,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617451153] [2022-01-18 10:00:34,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:34,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:34,392 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 10:00:34,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:34,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617451153] [2022-01-18 10:00:34,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617451153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:34,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:34,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 10:00:34,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011823293] [2022-01-18 10:00:34,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:34,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 10:00:34,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:34,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 10:00:34,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 10:00:34,394 INFO L87 Difference]: Start difference. First operand 7769 states and 16214 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:34,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:34,560 INFO L93 Difference]: Finished difference Result 4518 states and 9036 transitions. [2022-01-18 10:00:34,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 10:00:34,561 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-18 10:00:34,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:34,567 INFO L225 Difference]: With dead ends: 4518 [2022-01-18 10:00:34,567 INFO L226 Difference]: Without dead ends: 4518 [2022-01-18 10:00:34,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-01-18 10:00:34,568 INFO L933 BasicCegarLoop]: 267 mSDtfsCounter, 369 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:34,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 884 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 10:00:34,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4518 states. [2022-01-18 10:00:34,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4518 to 3350. [2022-01-18 10:00:34,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3350 states, 3348 states have (on average 2.0074671445639187) internal successors, (6721), 3349 states have internal predecessors, (6721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:34,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3350 states to 3350 states and 6721 transitions. [2022-01-18 10:00:34,614 INFO L78 Accepts]: Start accepts. Automaton has 3350 states and 6721 transitions. Word has length 78 [2022-01-18 10:00:34,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:34,615 INFO L470 AbstractCegarLoop]: Abstraction has 3350 states and 6721 transitions. [2022-01-18 10:00:34,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:34,615 INFO L276 IsEmpty]: Start isEmpty. Operand 3350 states and 6721 transitions. [2022-01-18 10:00:34,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-18 10:00:34,617 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:34,618 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 10:00:34,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-18 10:00:34,618 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:34,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:34,618 INFO L85 PathProgramCache]: Analyzing trace with hash 185879758, now seen corresponding path program 1 times [2022-01-18 10:00:34,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:34,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418148477] [2022-01-18 10:00:34,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:34,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:34,886 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 10:00:34,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:34,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418148477] [2022-01-18 10:00:34,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418148477] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:34,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:34,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 10:00:34,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572945771] [2022-01-18 10:00:34,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:34,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 10:00:34,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:34,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 10:00:34,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-01-18 10:00:34,888 INFO L87 Difference]: Start difference. First operand 3350 states and 6721 transitions. Second operand has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:36,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:36,198 INFO L93 Difference]: Finished difference Result 5553 states and 11161 transitions. [2022-01-18 10:00:36,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 10:00:36,199 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:36,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:36,206 INFO L225 Difference]: With dead ends: 5553 [2022-01-18 10:00:36,206 INFO L226 Difference]: Without dead ends: 5553 [2022-01-18 10:00:36,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=581, Invalid=2499, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 10:00:36,207 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 1602 mSDsluCounter, 2986 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1602 SdHoareTripleChecker+Valid, 3268 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:36,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1602 Valid, 3268 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 10:00:36,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5553 states. [2022-01-18 10:00:36,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5553 to 3355. [2022-01-18 10:00:36,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3355 states, 3353 states have (on average 2.0071577691619447) internal successors, (6730), 3354 states have internal predecessors, (6730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:36,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3355 states to 3355 states and 6730 transitions. [2022-01-18 10:00:36,242 INFO L78 Accepts]: Start accepts. Automaton has 3355 states and 6730 transitions. Word has length 81 [2022-01-18 10:00:36,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:36,242 INFO L470 AbstractCegarLoop]: Abstraction has 3355 states and 6730 transitions. [2022-01-18 10:00:36,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:36,242 INFO L276 IsEmpty]: Start isEmpty. Operand 3355 states and 6730 transitions. [2022-01-18 10:00:36,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-18 10:00:36,244 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:36,244 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 10:00:36,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-18 10:00:36,244 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:36,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:36,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1324480462, now seen corresponding path program 2 times [2022-01-18 10:00:36,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:36,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264424847] [2022-01-18 10:00:36,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:36,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:36,483 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 10:00:36,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:36,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264424847] [2022-01-18 10:00:36,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264424847] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:36,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:36,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 10:00:36,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955353610] [2022-01-18 10:00:36,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:36,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 10:00:36,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:36,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 10:00:36,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-01-18 10:00:36,484 INFO L87 Difference]: Start difference. First operand 3355 states and 6730 transitions. Second operand has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:37,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:37,957 INFO L93 Difference]: Finished difference Result 6169 states and 12402 transitions. [2022-01-18 10:00:37,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 10:00:37,957 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:37,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:37,964 INFO L225 Difference]: With dead ends: 6169 [2022-01-18 10:00:37,964 INFO L226 Difference]: Without dead ends: 6169 [2022-01-18 10:00:37,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 730 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=563, Invalid=2517, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 10:00:37,969 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 1628 mSDsluCounter, 3295 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 3633 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:37,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1628 Valid, 3633 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 10:00:37,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6169 states. [2022-01-18 10:00:38,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6169 to 3406. [2022-01-18 10:00:38,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3406 states, 3404 states have (on average 2.0079318448883665) internal successors, (6835), 3405 states have internal predecessors, (6835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:38,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 6835 transitions. [2022-01-18 10:00:38,006 INFO L78 Accepts]: Start accepts. Automaton has 3406 states and 6835 transitions. Word has length 81 [2022-01-18 10:00:38,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:38,007 INFO L470 AbstractCegarLoop]: Abstraction has 3406 states and 6835 transitions. [2022-01-18 10:00:38,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:38,007 INFO L276 IsEmpty]: Start isEmpty. Operand 3406 states and 6835 transitions. [2022-01-18 10:00:38,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-18 10:00:38,009 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:38,009 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 10:00:38,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-18 10:00:38,009 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:38,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:38,009 INFO L85 PathProgramCache]: Analyzing trace with hash -178500404, now seen corresponding path program 3 times [2022-01-18 10:00:38,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:38,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210484734] [2022-01-18 10:00:38,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:38,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:38,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:38,272 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 10:00:38,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:38,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210484734] [2022-01-18 10:00:38,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210484734] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:38,272 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:38,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 10:00:38,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874356763] [2022-01-18 10:00:38,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:38,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 10:00:38,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:38,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 10:00:38,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-01-18 10:00:38,274 INFO L87 Difference]: Start difference. First operand 3406 states and 6835 transitions. Second operand has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:39,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:39,766 INFO L93 Difference]: Finished difference Result 5606 states and 11266 transitions. [2022-01-18 10:00:39,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 10:00:39,766 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:39,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:39,772 INFO L225 Difference]: With dead ends: 5606 [2022-01-18 10:00:39,772 INFO L226 Difference]: Without dead ends: 5606 [2022-01-18 10:00:39,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 843 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=641, Invalid=2781, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 10:00:39,773 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 1300 mSDsluCounter, 3481 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1300 SdHoareTripleChecker+Valid, 3786 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:39,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1300 Valid, 3786 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 10:00:39,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5606 states. [2022-01-18 10:00:39,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5606 to 3406. [2022-01-18 10:00:39,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3406 states, 3404 states have (on average 2.0079318448883665) internal successors, (6835), 3405 states have internal predecessors, (6835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:39,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3406 states to 3406 states and 6835 transitions. [2022-01-18 10:00:39,810 INFO L78 Accepts]: Start accepts. Automaton has 3406 states and 6835 transitions. Word has length 81 [2022-01-18 10:00:39,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:39,810 INFO L470 AbstractCegarLoop]: Abstraction has 3406 states and 6835 transitions. [2022-01-18 10:00:39,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:39,810 INFO L276 IsEmpty]: Start isEmpty. Operand 3406 states and 6835 transitions. [2022-01-18 10:00:39,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-18 10:00:39,812 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:39,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 10:00:39,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-18 10:00:39,812 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:39,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:39,813 INFO L85 PathProgramCache]: Analyzing trace with hash 164150042, now seen corresponding path program 4 times [2022-01-18 10:00:39,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:39,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31577712] [2022-01-18 10:00:39,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:39,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:40,075 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 10:00:40,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:40,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31577712] [2022-01-18 10:00:40,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31577712] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:40,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:40,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 10:00:40,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288934087] [2022-01-18 10:00:40,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:40,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 10:00:40,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:40,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 10:00:40,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2022-01-18 10:00:40,077 INFO L87 Difference]: Start difference. First operand 3406 states and 6835 transitions. Second operand has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:41,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:41,724 INFO L93 Difference]: Finished difference Result 6287 states and 12618 transitions. [2022-01-18 10:00:41,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 10:00:41,728 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:41,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:41,736 INFO L225 Difference]: With dead ends: 6287 [2022-01-18 10:00:41,736 INFO L226 Difference]: Without dead ends: 6287 [2022-01-18 10:00:41,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=680, Invalid=2626, Unknown=0, NotChecked=0, Total=3306 [2022-01-18 10:00:41,737 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 2000 mSDsluCounter, 3435 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2000 SdHoareTripleChecker+Valid, 3735 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:41,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2000 Valid, 3735 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 10:00:41,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6287 states. [2022-01-18 10:00:41,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6287 to 3436. [2022-01-18 10:00:41,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3436 states, 3434 states have (on average 2.006406523005242) internal successors, (6890), 3435 states have internal predecessors, (6890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:41,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3436 states to 3436 states and 6890 transitions. [2022-01-18 10:00:41,772 INFO L78 Accepts]: Start accepts. Automaton has 3436 states and 6890 transitions. Word has length 81 [2022-01-18 10:00:41,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:41,772 INFO L470 AbstractCegarLoop]: Abstraction has 3436 states and 6890 transitions. [2022-01-18 10:00:41,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:41,772 INFO L276 IsEmpty]: Start isEmpty. Operand 3436 states and 6890 transitions. [2022-01-18 10:00:41,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-18 10:00:41,774 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:41,774 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 10:00:41,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-18 10:00:41,774 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:41,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:41,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1025934648, now seen corresponding path program 5 times [2022-01-18 10:00:41,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:41,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535330084] [2022-01-18 10:00:41,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:41,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:42,061 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 10:00:42,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:42,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535330084] [2022-01-18 10:00:42,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535330084] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:42,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:42,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 10:00:42,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724508649] [2022-01-18 10:00:42,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:42,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 10:00:42,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:42,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 10:00:42,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-01-18 10:00:42,063 INFO L87 Difference]: Start difference. First operand 3436 states and 6890 transitions. Second operand has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:43,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:43,594 INFO L93 Difference]: Finished difference Result 5995 states and 11999 transitions. [2022-01-18 10:00:43,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 10:00:43,595 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:43,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:43,601 INFO L225 Difference]: With dead ends: 5995 [2022-01-18 10:00:43,601 INFO L226 Difference]: Without dead ends: 5995 [2022-01-18 10:00:43,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=623, Invalid=2569, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 10:00:43,602 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 1578 mSDsluCounter, 3122 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 3409 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:43,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1578 Valid, 3409 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1120 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 10:00:43,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5995 states. [2022-01-18 10:00:43,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5995 to 3439. [2022-01-18 10:00:43,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3439 states, 3437 states have (on average 2.0064009310445154) internal successors, (6896), 3438 states have internal predecessors, (6896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:43,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3439 states to 3439 states and 6896 transitions. [2022-01-18 10:00:43,639 INFO L78 Accepts]: Start accepts. Automaton has 3439 states and 6896 transitions. Word has length 81 [2022-01-18 10:00:43,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:43,639 INFO L470 AbstractCegarLoop]: Abstraction has 3439 states and 6896 transitions. [2022-01-18 10:00:43,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:43,640 INFO L276 IsEmpty]: Start isEmpty. Operand 3439 states and 6896 transitions. [2022-01-18 10:00:43,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-18 10:00:43,641 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:43,641 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 10:00:43,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-18 10:00:43,642 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:43,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:43,642 INFO L85 PathProgramCache]: Analyzing trace with hash -2130431944, now seen corresponding path program 6 times [2022-01-18 10:00:43,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:43,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783504519] [2022-01-18 10:00:43,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:43,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:43,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:43,909 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 10:00:43,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:43,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783504519] [2022-01-18 10:00:43,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783504519] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:43,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:43,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 10:00:43,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235952752] [2022-01-18 10:00:43,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:43,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 10:00:43,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:43,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 10:00:43,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2022-01-18 10:00:43,910 INFO L87 Difference]: Start difference. First operand 3439 states and 6896 transitions. Second operand has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:45,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:45,317 INFO L93 Difference]: Finished difference Result 6444 states and 12922 transitions. [2022-01-18 10:00:45,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 10:00:45,317 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:45,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:45,324 INFO L225 Difference]: With dead ends: 6444 [2022-01-18 10:00:45,324 INFO L226 Difference]: Without dead ends: 6444 [2022-01-18 10:00:45,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=598, Invalid=2482, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 10:00:45,325 INFO L933 BasicCegarLoop]: 353 mSDtfsCounter, 2089 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2089 SdHoareTripleChecker+Valid, 3033 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:45,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2089 Valid, 3033 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 918 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 10:00:45,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6444 states. [2022-01-18 10:00:45,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6444 to 3442. [2022-01-18 10:00:45,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3442 states, 3440 states have (on average 2.0063953488372093) internal successors, (6902), 3441 states have internal predecessors, (6902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:45,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3442 states to 3442 states and 6902 transitions. [2022-01-18 10:00:45,361 INFO L78 Accepts]: Start accepts. Automaton has 3442 states and 6902 transitions. Word has length 81 [2022-01-18 10:00:45,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:45,362 INFO L470 AbstractCegarLoop]: Abstraction has 3442 states and 6902 transitions. [2022-01-18 10:00:45,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:45,362 INFO L276 IsEmpty]: Start isEmpty. Operand 3442 states and 6902 transitions. [2022-01-18 10:00:45,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-18 10:00:45,364 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:45,364 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 10:00:45,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-18 10:00:45,364 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:45,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:45,364 INFO L85 PathProgramCache]: Analyzing trace with hash 661554486, now seen corresponding path program 7 times [2022-01-18 10:00:45,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:45,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834805046] [2022-01-18 10:00:45,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:45,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:45,619 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 10:00:45,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:45,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834805046] [2022-01-18 10:00:45,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834805046] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:45,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:45,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 10:00:45,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590584071] [2022-01-18 10:00:45,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:45,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 10:00:45,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:45,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 10:00:45,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-01-18 10:00:45,621 INFO L87 Difference]: Start difference. First operand 3442 states and 6902 transitions. Second operand has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:47,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:47,186 INFO L93 Difference]: Finished difference Result 6055 states and 12124 transitions. [2022-01-18 10:00:47,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 10:00:47,187 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:47,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:47,193 INFO L225 Difference]: With dead ends: 6055 [2022-01-18 10:00:47,193 INFO L226 Difference]: Without dead ends: 6055 [2022-01-18 10:00:47,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 824 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=670, Invalid=2752, Unknown=0, NotChecked=0, Total=3422 [2022-01-18 10:00:47,194 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 1993 mSDsluCounter, 3124 mSDsCounter, 0 mSdLazyCounter, 1070 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1993 SdHoareTripleChecker+Valid, 3441 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 1070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:47,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1993 Valid, 3441 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 1070 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 10:00:47,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6055 states. [2022-01-18 10:00:47,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6055 to 3436. [2022-01-18 10:00:47,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3436 states, 3434 states have (on average 2.006406523005242) internal successors, (6890), 3435 states have internal predecessors, (6890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:47,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3436 states to 3436 states and 6890 transitions. [2022-01-18 10:00:47,233 INFO L78 Accepts]: Start accepts. Automaton has 3436 states and 6890 transitions. Word has length 81 [2022-01-18 10:00:47,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:47,233 INFO L470 AbstractCegarLoop]: Abstraction has 3436 states and 6890 transitions. [2022-01-18 10:00:47,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:47,233 INFO L276 IsEmpty]: Start isEmpty. Operand 3436 states and 6890 transitions. [2022-01-18 10:00:47,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-18 10:00:47,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:47,235 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 10:00:47,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-18 10:00:47,235 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:47,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:47,236 INFO L85 PathProgramCache]: Analyzing trace with hash 475759382, now seen corresponding path program 8 times [2022-01-18 10:00:47,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:47,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080525638] [2022-01-18 10:00:47,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:47,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:47,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:47,495 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 10:00:47,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:47,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080525638] [2022-01-18 10:00:47,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080525638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:47,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:47,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 10:00:47,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166807660] [2022-01-18 10:00:47,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:47,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 10:00:47,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:47,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 10:00:47,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 10:00:47,497 INFO L87 Difference]: Start difference. First operand 3436 states and 6890 transitions. Second operand has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:48,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:48,796 INFO L93 Difference]: Finished difference Result 5842 states and 11611 transitions. [2022-01-18 10:00:48,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 10:00:48,796 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:48,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:48,802 INFO L225 Difference]: With dead ends: 5842 [2022-01-18 10:00:48,802 INFO L226 Difference]: Without dead ends: 5842 [2022-01-18 10:00:48,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=527, Invalid=2023, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 10:00:48,803 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 1513 mSDsluCounter, 3339 mSDsCounter, 0 mSdLazyCounter, 1313 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 3642 SdHoareTripleChecker+Invalid, 1367 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:48,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1513 Valid, 3642 Invalid, 1367 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1313 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 10:00:48,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5842 states. [2022-01-18 10:00:48,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5842 to 3463. [2022-01-18 10:00:48,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3463 states, 3461 states have (on average 2.0063565443513434) internal successors, (6944), 3462 states have internal predecessors, (6944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:48,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3463 states to 3463 states and 6944 transitions. [2022-01-18 10:00:48,839 INFO L78 Accepts]: Start accepts. Automaton has 3463 states and 6944 transitions. Word has length 81 [2022-01-18 10:00:48,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:48,839 INFO L470 AbstractCegarLoop]: Abstraction has 3463 states and 6944 transitions. [2022-01-18 10:00:48,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:48,839 INFO L276 IsEmpty]: Start isEmpty. Operand 3463 states and 6944 transitions. [2022-01-18 10:00:48,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-18 10:00:48,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:48,842 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 10:00:48,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-18 10:00:48,842 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:48,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:48,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1983120214, now seen corresponding path program 9 times [2022-01-18 10:00:48,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:48,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347296495] [2022-01-18 10:00:48,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:48,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:49,107 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 10:00:49,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:49,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347296495] [2022-01-18 10:00:49,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347296495] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:49,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:49,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 10:00:49,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344709122] [2022-01-18 10:00:49,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:49,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 10:00:49,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:49,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 10:00:49,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2022-01-18 10:00:49,108 INFO L87 Difference]: Start difference. First operand 3463 states and 6944 transitions. Second operand has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:50,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:50,454 INFO L93 Difference]: Finished difference Result 5620 states and 11195 transitions. [2022-01-18 10:00:50,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 10:00:50,455 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:50,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:50,461 INFO L225 Difference]: With dead ends: 5620 [2022-01-18 10:00:50,461 INFO L226 Difference]: Without dead ends: 5620 [2022-01-18 10:00:50,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 619 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=552, Invalid=2310, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 10:00:50,461 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 1547 mSDsluCounter, 3198 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 3490 SdHoareTripleChecker+Invalid, 1213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:50,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1547 Valid, 3490 Invalid, 1213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 10:00:50,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5620 states. [2022-01-18 10:00:50,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5620 to 3466. [2022-01-18 10:00:50,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3466 states, 3464 states have (on average 2.00635103926097) internal successors, (6950), 3465 states have internal predecessors, (6950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:50,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3466 states to 3466 states and 6950 transitions. [2022-01-18 10:00:50,496 INFO L78 Accepts]: Start accepts. Automaton has 3466 states and 6950 transitions. Word has length 81 [2022-01-18 10:00:50,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:50,497 INFO L470 AbstractCegarLoop]: Abstraction has 3466 states and 6950 transitions. [2022-01-18 10:00:50,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:50,497 INFO L276 IsEmpty]: Start isEmpty. Operand 3466 states and 6950 transitions. [2022-01-18 10:00:50,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-18 10:00:50,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:50,499 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 10:00:50,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-18 10:00:50,499 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:50,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:50,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1173246378, now seen corresponding path program 10 times [2022-01-18 10:00:50,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:50,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103153277] [2022-01-18 10:00:50,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:50,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:50,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:50,763 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 10:00:50,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:50,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103153277] [2022-01-18 10:00:50,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103153277] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:50,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:50,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 10:00:50,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922084847] [2022-01-18 10:00:50,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:50,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 10:00:50,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:50,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 10:00:50,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 10:00:50,765 INFO L87 Difference]: Start difference. First operand 3466 states and 6950 transitions. Second operand has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:52,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:52,157 INFO L93 Difference]: Finished difference Result 6725 states and 13452 transitions. [2022-01-18 10:00:52,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 10:00:52,157 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:52,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:52,165 INFO L225 Difference]: With dead ends: 6725 [2022-01-18 10:00:52,165 INFO L226 Difference]: Without dead ends: 6725 [2022-01-18 10:00:52,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 759 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=590, Invalid=2602, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 10:00:52,166 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 1899 mSDsluCounter, 3367 mSDsCounter, 0 mSdLazyCounter, 1162 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1899 SdHoareTripleChecker+Valid, 3722 SdHoareTripleChecker+Invalid, 1225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:52,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1899 Valid, 3722 Invalid, 1225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1162 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 10:00:52,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6725 states. [2022-01-18 10:00:52,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6725 to 3469. [2022-01-18 10:00:52,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3469 states, 3467 states have (on average 2.0063455436977216) internal successors, (6956), 3468 states have internal predecessors, (6956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:52,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3469 states to 3469 states and 6956 transitions. [2022-01-18 10:00:52,205 INFO L78 Accepts]: Start accepts. Automaton has 3469 states and 6956 transitions. Word has length 81 [2022-01-18 10:00:52,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:52,206 INFO L470 AbstractCegarLoop]: Abstraction has 3469 states and 6956 transitions. [2022-01-18 10:00:52,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:52,206 INFO L276 IsEmpty]: Start isEmpty. Operand 3469 states and 6956 transitions. [2022-01-18 10:00:52,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-18 10:00:52,209 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:52,210 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 10:00:52,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-18 10:00:52,210 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:52,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:52,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1618740052, now seen corresponding path program 11 times [2022-01-18 10:00:52,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:52,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590166241] [2022-01-18 10:00:52,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:52,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:52,456 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 10:00:52,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:52,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590166241] [2022-01-18 10:00:52,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590166241] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:52,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:52,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 10:00:52,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425977411] [2022-01-18 10:00:52,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:52,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 10:00:52,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:52,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 10:00:52,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2022-01-18 10:00:52,457 INFO L87 Difference]: Start difference. First operand 3469 states and 6956 transitions. Second operand has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:53,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:53,972 INFO L93 Difference]: Finished difference Result 6664 states and 13326 transitions. [2022-01-18 10:00:53,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 10:00:53,972 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:53,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:53,980 INFO L225 Difference]: With dead ends: 6664 [2022-01-18 10:00:53,980 INFO L226 Difference]: Without dead ends: 6664 [2022-01-18 10:00:53,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 850 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=660, Invalid=2880, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 10:00:53,981 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 1841 mSDsluCounter, 3409 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1841 SdHoareTripleChecker+Valid, 3731 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:53,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1841 Valid, 3731 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 10:00:53,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6664 states. [2022-01-18 10:00:54,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6664 to 3445. [2022-01-18 10:00:54,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3445 states, 3443 states have (on average 2.0063897763578273) internal successors, (6908), 3444 states have internal predecessors, (6908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:54,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3445 states to 3445 states and 6908 transitions. [2022-01-18 10:00:54,019 INFO L78 Accepts]: Start accepts. Automaton has 3445 states and 6908 transitions. Word has length 81 [2022-01-18 10:00:54,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:54,019 INFO L470 AbstractCegarLoop]: Abstraction has 3445 states and 6908 transitions. [2022-01-18 10:00:54,019 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:54,019 INFO L276 IsEmpty]: Start isEmpty. Operand 3445 states and 6908 transitions. [2022-01-18 10:00:54,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-18 10:00:54,021 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:54,021 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 10:00:54,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-18 10:00:54,021 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:54,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:54,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1108840562, now seen corresponding path program 12 times [2022-01-18 10:00:54,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:54,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227965902] [2022-01-18 10:00:54,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:54,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:54,306 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 10:00:54,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:54,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227965902] [2022-01-18 10:00:54,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227965902] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:54,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:54,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 10:00:54,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720121046] [2022-01-18 10:00:54,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:54,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 10:00:54,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:54,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 10:00:54,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 10:00:54,308 INFO L87 Difference]: Start difference. First operand 3445 states and 6908 transitions. Second operand has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:55,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:55,571 INFO L93 Difference]: Finished difference Result 5448 states and 10881 transitions. [2022-01-18 10:00:55,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 10:00:55,573 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:55,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:55,579 INFO L225 Difference]: With dead ends: 5448 [2022-01-18 10:00:55,579 INFO L226 Difference]: Without dead ends: 5448 [2022-01-18 10:00:55,579 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=500, Invalid=1950, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 10:00:55,580 INFO L933 BasicCegarLoop]: 305 mSDtfsCounter, 1251 mSDsluCounter, 3132 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1251 SdHoareTripleChecker+Valid, 3436 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:55,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1251 Valid, 3436 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 10:00:55,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5448 states. [2022-01-18 10:00:55,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5448 to 3451. [2022-01-18 10:00:55,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3451 states, 3449 states have (on average 2.0063786604812988) internal successors, (6920), 3450 states have internal predecessors, (6920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:55,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3451 states to 3451 states and 6920 transitions. [2022-01-18 10:00:55,614 INFO L78 Accepts]: Start accepts. Automaton has 3451 states and 6920 transitions. Word has length 81 [2022-01-18 10:00:55,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:55,614 INFO L470 AbstractCegarLoop]: Abstraction has 3451 states and 6920 transitions. [2022-01-18 10:00:55,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:55,614 INFO L276 IsEmpty]: Start isEmpty. Operand 3451 states and 6920 transitions. [2022-01-18 10:00:55,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-18 10:00:55,616 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:55,616 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 10:00:55,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-18 10:00:55,616 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:55,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:55,616 INFO L85 PathProgramCache]: Analyzing trace with hash 2023906220, now seen corresponding path program 13 times [2022-01-18 10:00:55,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:55,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671250122] [2022-01-18 10:00:55,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:55,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:55,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:55,861 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 10:00:55,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:55,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671250122] [2022-01-18 10:00:55,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671250122] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:55,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:55,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 10:00:55,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717144470] [2022-01-18 10:00:55,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:55,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 10:00:55,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:55,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 10:00:55,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 10:00:55,862 INFO L87 Difference]: Start difference. First operand 3451 states and 6920 transitions. Second operand has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:57,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:57,098 INFO L93 Difference]: Finished difference Result 5812 states and 11578 transitions. [2022-01-18 10:00:57,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 10:00:57,098 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:57,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:57,106 INFO L225 Difference]: With dead ends: 5812 [2022-01-18 10:00:57,106 INFO L226 Difference]: Without dead ends: 5812 [2022-01-18 10:00:57,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=524, Invalid=2026, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 10:00:57,107 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 1375 mSDsluCounter, 2969 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1375 SdHoareTripleChecker+Valid, 3289 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:57,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1375 Valid, 3289 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1147 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 10:00:57,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5812 states. [2022-01-18 10:00:57,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5812 to 3451. [2022-01-18 10:00:57,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3451 states, 3449 states have (on average 2.0063786604812988) internal successors, (6920), 3450 states have internal predecessors, (6920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:57,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3451 states to 3451 states and 6920 transitions. [2022-01-18 10:00:57,143 INFO L78 Accepts]: Start accepts. Automaton has 3451 states and 6920 transitions. Word has length 81 [2022-01-18 10:00:57,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:57,143 INFO L470 AbstractCegarLoop]: Abstraction has 3451 states and 6920 transitions. [2022-01-18 10:00:57,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:57,143 INFO L276 IsEmpty]: Start isEmpty. Operand 3451 states and 6920 transitions. [2022-01-18 10:00:57,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-18 10:00:57,145 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:57,145 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 10:00:57,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-18 10:00:57,145 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:57,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:57,145 INFO L85 PathProgramCache]: Analyzing trace with hash -763700244, now seen corresponding path program 14 times [2022-01-18 10:00:57,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:57,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212671307] [2022-01-18 10:00:57,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:57,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:57,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:57,393 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 10:00:57,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:57,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212671307] [2022-01-18 10:00:57,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212671307] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:57,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:57,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 10:00:57,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999375625] [2022-01-18 10:00:57,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:57,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 10:00:57,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:57,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 10:00:57,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2022-01-18 10:00:57,395 INFO L87 Difference]: Start difference. First operand 3451 states and 6920 transitions. Second operand has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:58,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:00:58,674 INFO L93 Difference]: Finished difference Result 5569 states and 11128 transitions. [2022-01-18 10:00:58,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-18 10:00:58,674 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:58,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:00:58,680 INFO L225 Difference]: With dead ends: 5569 [2022-01-18 10:00:58,680 INFO L226 Difference]: Without dead ends: 5569 [2022-01-18 10:00:58,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=549, Invalid=2313, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 10:00:58,681 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 1630 mSDsluCounter, 2492 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1630 SdHoareTripleChecker+Valid, 2801 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 10:00:58,681 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1630 Valid, 2801 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 10:00:58,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5569 states. [2022-01-18 10:00:58,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5569 to 3451. [2022-01-18 10:00:58,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3451 states, 3449 states have (on average 2.0063786604812988) internal successors, (6920), 3450 states have internal predecessors, (6920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:00:58,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3451 states to 3451 states and 6920 transitions. [2022-01-18 10:00:58,735 INFO L78 Accepts]: Start accepts. Automaton has 3451 states and 6920 transitions. Word has length 81 [2022-01-18 10:00:58,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:00:58,735 INFO L470 AbstractCegarLoop]: Abstraction has 3451 states and 6920 transitions. [2022-01-18 10:00:58,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:00:58,735 INFO L276 IsEmpty]: Start isEmpty. Operand 3451 states and 6920 transitions. [2022-01-18 10:00:58,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-18 10:00:58,736 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:00:58,737 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 10:00:58,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-18 10:00:58,737 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:00:58,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:00:58,737 INFO L85 PathProgramCache]: Analyzing trace with hash 374900460, now seen corresponding path program 15 times [2022-01-18 10:00:58,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:00:58,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399578784] [2022-01-18 10:00:58,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:00:58,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:00:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:00:58,964 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 10:00:58,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:00:58,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399578784] [2022-01-18 10:00:58,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399578784] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:00:58,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:00:58,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 10:00:58,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448329188] [2022-01-18 10:00:58,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:00:58,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 10:00:58,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:00:58,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 10:00:58,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 10:00:58,966 INFO L87 Difference]: Start difference. First operand 3451 states and 6920 transitions. Second operand has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:01:00,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:01:00,322 INFO L93 Difference]: Finished difference Result 6669 states and 13376 transitions. [2022-01-18 10:01:00,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 10:01:00,322 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:01:00,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:01:00,329 INFO L225 Difference]: With dead ends: 6669 [2022-01-18 10:01:00,329 INFO L226 Difference]: Without dead ends: 6669 [2022-01-18 10:01:00,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=586, Invalid=2606, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 10:01:00,330 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 1659 mSDsluCounter, 3168 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1659 SdHoareTripleChecker+Valid, 3540 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 10:01:00,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1659 Valid, 3540 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 10:01:00,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6669 states. [2022-01-18 10:01:00,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6669 to 3445. [2022-01-18 10:01:00,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3445 states, 3443 states have (on average 2.0063897763578273) internal successors, (6908), 3444 states have internal predecessors, (6908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:00,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3445 states to 3445 states and 6908 transitions. [2022-01-18 10:01:00,366 INFO L78 Accepts]: Start accepts. Automaton has 3445 states and 6908 transitions. Word has length 81 [2022-01-18 10:01:00,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:01:00,366 INFO L470 AbstractCegarLoop]: Abstraction has 3445 states and 6908 transitions. [2022-01-18 10:01:00,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:01:00,367 INFO L276 IsEmpty]: Start isEmpty. Operand 3445 states and 6908 transitions. [2022-01-18 10:01:00,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-18 10:01:00,368 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:01:00,369 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 10:01:00,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-18 10:01:00,369 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:01:00,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:01:00,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1128080406, now seen corresponding path program 16 times [2022-01-18 10:01:00,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:01:00,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307859369] [2022-01-18 10:01:00,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:01:00,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:01:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:01:00,614 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 10:01:00,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:01:00,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307859369] [2022-01-18 10:01:00,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307859369] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:01:00,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:01:00,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 10:01:00,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225175022] [2022-01-18 10:01:00,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:01:00,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 10:01:00,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:01:00,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 10:01:00,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2022-01-18 10:01:00,616 INFO L87 Difference]: Start difference. First operand 3445 states and 6908 transitions. Second operand has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:01:02,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:01:02,133 INFO L93 Difference]: Finished difference Result 6608 states and 13250 transitions. [2022-01-18 10:01:02,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 10:01:02,134 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:01:02,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:01:02,142 INFO L225 Difference]: With dead ends: 6608 [2022-01-18 10:01:02,142 INFO L226 Difference]: Without dead ends: 6608 [2022-01-18 10:01:02,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 853 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=657, Invalid=2883, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 10:01:02,143 INFO L933 BasicCegarLoop]: 339 mSDtfsCounter, 1680 mSDsluCounter, 3538 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1680 SdHoareTripleChecker+Valid, 3877 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 10:01:02,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1680 Valid, 3877 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 10:01:02,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6608 states. [2022-01-18 10:01:02,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6608 to 3421. [2022-01-18 10:01:02,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3421 states, 3419 states have (on average 2.0064346300087745) internal successors, (6860), 3420 states have internal predecessors, (6860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:02,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3421 states to 3421 states and 6860 transitions. [2022-01-18 10:01:02,182 INFO L78 Accepts]: Start accepts. Automaton has 3421 states and 6860 transitions. Word has length 81 [2022-01-18 10:01:02,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:01:02,182 INFO L470 AbstractCegarLoop]: Abstraction has 3421 states and 6860 transitions. [2022-01-18 10:01:02,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:01:02,182 INFO L276 IsEmpty]: Start isEmpty. Operand 3421 states and 6860 transitions. [2022-01-18 10:01:02,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-18 10:01:02,184 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:01:02,184 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 10:01:02,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-18 10:01:02,184 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:01:02,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:01:02,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1637979896, now seen corresponding path program 17 times [2022-01-18 10:01:02,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:01:02,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648695983] [2022-01-18 10:01:02,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:01:02,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:01:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:01:02,417 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 10:01:02,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:01:02,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648695983] [2022-01-18 10:01:02,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648695983] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:01:02,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:01:02,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 10:01:02,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683032425] [2022-01-18 10:01:02,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:01:02,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 10:01:02,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:01:02,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 10:01:02,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-01-18 10:01:02,419 INFO L87 Difference]: Start difference. First operand 3421 states and 6860 transitions. Second operand has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:01:03,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:01:03,733 INFO L93 Difference]: Finished difference Result 6000 states and 11941 transitions. [2022-01-18 10:01:03,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 10:01:03,734 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:01:03,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:01:03,740 INFO L225 Difference]: With dead ends: 6000 [2022-01-18 10:01:03,740 INFO L226 Difference]: Without dead ends: 6000 [2022-01-18 10:01:03,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=524, Invalid=2026, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 10:01:03,740 INFO L933 BasicCegarLoop]: 326 mSDtfsCounter, 1324 mSDsluCounter, 3266 mSDsCounter, 0 mSdLazyCounter, 1349 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 3592 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 10:01:03,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1324 Valid, 3592 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1349 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 10:01:03,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6000 states. [2022-01-18 10:01:03,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6000 to 3412. [2022-01-18 10:01:03,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3412 states, 3410 states have (on average 2.0064516129032257) internal successors, (6842), 3411 states have internal predecessors, (6842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:03,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3412 states to 3412 states and 6842 transitions. [2022-01-18 10:01:03,776 INFO L78 Accepts]: Start accepts. Automaton has 3412 states and 6842 transitions. Word has length 81 [2022-01-18 10:01:03,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:01:03,776 INFO L470 AbstractCegarLoop]: Abstraction has 3412 states and 6842 transitions. [2022-01-18 10:01:03,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:01:03,777 INFO L276 IsEmpty]: Start isEmpty. Operand 3412 states and 6842 transitions. [2022-01-18 10:01:03,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-18 10:01:03,778 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:01:03,778 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 10:01:03,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-18 10:01:03,778 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:01:03,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:01:03,779 INFO L85 PathProgramCache]: Analyzing trace with hash -2035292628, now seen corresponding path program 18 times [2022-01-18 10:01:03,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:01:03,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316319299] [2022-01-18 10:01:03,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:01:03,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:01:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:01:03,992 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 10:01:03,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:01:03,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316319299] [2022-01-18 10:01:03,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316319299] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:01:03,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:01:03,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-18 10:01:03,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300745557] [2022-01-18 10:01:03,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:01:03,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-18 10:01:03,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:01:03,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-18 10:01:03,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2022-01-18 10:01:03,993 INFO L87 Difference]: Start difference. First operand 3412 states and 6842 transitions. Second operand has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:01:05,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:01:05,148 INFO L93 Difference]: Finished difference Result 5400 states and 10821 transitions. [2022-01-18 10:01:05,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-18 10:01:05,149 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:01:05,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:01:05,154 INFO L225 Difference]: With dead ends: 5400 [2022-01-18 10:01:05,154 INFO L226 Difference]: Without dead ends: 5400 [2022-01-18 10:01:05,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=520, Invalid=2030, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 10:01:05,155 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 1703 mSDsluCounter, 2504 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1703 SdHoareTripleChecker+Valid, 2835 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 10:01:05,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1703 Valid, 2835 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 10:01:05,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5400 states. [2022-01-18 10:01:05,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5400 to 3386. [2022-01-18 10:01:05,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3384 states have (on average 2.009160756501182) internal successors, (6799), 3385 states have internal predecessors, (6799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:05,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 6799 transitions. [2022-01-18 10:01:05,189 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 6799 transitions. Word has length 81 [2022-01-18 10:01:05,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:01:05,189 INFO L470 AbstractCegarLoop]: Abstraction has 3386 states and 6799 transitions. [2022-01-18 10:01:05,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.857142857142857) internal successors, (81), 21 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 10:01:05,189 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 6799 transitions. [2022-01-18 10:01:05,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-18 10:01:05,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:01:05,191 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 10:01:05,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-18 10:01:05,191 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:01:05,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:01:05,192 INFO L85 PathProgramCache]: Analyzing trace with hash -820424251, now seen corresponding path program 1 times [2022-01-18 10:01:05,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:01:05,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541931700] [2022-01-18 10:01:05,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:01:05,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:01:05,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:01:05,412 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:01:05,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:01:05,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541931700] [2022-01-18 10:01:05,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541931700] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 10:01:05,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421125465] [2022-01-18 10:01:05,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:01:05,412 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:01:05,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 10:01:05,414 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 10:01:05,414 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 10:01:05,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:01:05,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 43 conjunts are in the unsatisfiable core [2022-01-18 10:01:05,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 10:01:05,737 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 10:01:05,738 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 10:01:05,883 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 11 treesize of output 7 [2022-01-18 10:01:05,980 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 10:01:06,354 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:01:06,505 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 10:01:06,516 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:01:06,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 10:01:06,938 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_689 (Array Int Int))) (<= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#tid~0#1.base| v_ArrVal_689) |c_~#pqb~0.base|) |c_~#pqb~0.offset|))) is different from false [2022-01-18 10:01:06,969 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:01:06,969 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 18 treesize of output 19 [2022-01-18 10:01:06,976 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:01:06,976 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 30 treesize of output 33 [2022-01-18 10:01:06,980 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 9 treesize of output 7 [2022-01-18 10:01:07,130 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 10:01:07,130 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 13 treesize of output 12 [2022-01-18 10:01:07,140 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:01:07,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421125465] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 10:01:07,141 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 10:01:07,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17, 17] total 45 [2022-01-18 10:01:07,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405826333] [2022-01-18 10:01:07,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 10:01:07,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 10:01:07,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:01:07,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 10:01:07,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=1711, Unknown=1, NotChecked=84, Total=1980 [2022-01-18 10:01:07,144 INFO L87 Difference]: Start difference. First operand 3386 states and 6799 transitions. Second operand has 45 states, 45 states have (on average 5.088888888888889) internal successors, (229), 45 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:09,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:01:09,771 INFO L93 Difference]: Finished difference Result 7054 states and 14168 transitions. [2022-01-18 10:01:09,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 10:01:09,771 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 5.088888888888889) internal successors, (229), 45 states have internal predecessors, (229), 0 states have call successors, (0), 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 94 [2022-01-18 10:01:09,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:01:09,779 INFO L225 Difference]: With dead ends: 7054 [2022-01-18 10:01:09,779 INFO L226 Difference]: Without dead ends: 7054 [2022-01-18 10:01:09,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 164 SyntacticMatches, 7 SemanticMatches, 81 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1691 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1321, Invalid=5324, Unknown=1, NotChecked=160, Total=6806 [2022-01-18 10:01:09,780 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 3072 mSDsluCounter, 5239 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3072 SdHoareTripleChecker+Valid, 5618 SdHoareTripleChecker+Invalid, 2508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1112 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 10:01:09,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3072 Valid, 5618 Invalid, 2508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1280 Invalid, 0 Unknown, 1112 Unchecked, 0.6s Time] [2022-01-18 10:01:09,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7054 states. [2022-01-18 10:01:09,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7054 to 4250. [2022-01-18 10:01:09,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4250 states, 4248 states have (on average 2.0185969868173257) internal successors, (8575), 4249 states have internal predecessors, (8575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:09,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4250 states to 4250 states and 8575 transitions. [2022-01-18 10:01:09,836 INFO L78 Accepts]: Start accepts. Automaton has 4250 states and 8575 transitions. Word has length 94 [2022-01-18 10:01:09,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:01:09,836 INFO L470 AbstractCegarLoop]: Abstraction has 4250 states and 8575 transitions. [2022-01-18 10:01:09,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.088888888888889) internal successors, (229), 45 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:09,836 INFO L276 IsEmpty]: Start isEmpty. Operand 4250 states and 8575 transitions. [2022-01-18 10:01:09,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-18 10:01:09,838 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:01:09,838 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 10:01:09,855 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-18 10:01:10,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-01-18 10:01:10,039 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:01:10,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:01:10,040 INFO L85 PathProgramCache]: Analyzing trace with hash 339187099, now seen corresponding path program 2 times [2022-01-18 10:01:10,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:01:10,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73533627] [2022-01-18 10:01:10,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:01:10,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:01:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:01:10,300 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:01:10,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:01:10,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73533627] [2022-01-18 10:01:10,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73533627] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 10:01:10,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386600506] [2022-01-18 10:01:10,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 10:01:10,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:01:10,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 10:01:10,302 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 10:01:10,303 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 10:01:10,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 10:01:10,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 10:01:10,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 43 conjunts are in the unsatisfiable core [2022-01-18 10:01:10,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 10:01:10,541 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 10:01:10,542 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 10:01:10,662 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 11 treesize of output 7 [2022-01-18 10:01:10,757 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 10:01:11,130 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:01:11,290 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 10:01:11,304 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:01:11,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 10:01:11,669 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_726 (Array Int Int))) (<= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#tid~0#1.base| v_ArrVal_726) |c_~#pqb~0.base|) |c_~#pqb~0.offset|))) is different from false [2022-01-18 10:01:11,696 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:01:11,697 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 18 treesize of output 19 [2022-01-18 10:01:11,702 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:01:11,702 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 30 treesize of output 33 [2022-01-18 10:01:11,707 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 9 treesize of output 7 [2022-01-18 10:01:11,840 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 10:01:11,840 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 13 treesize of output 12 [2022-01-18 10:01:11,848 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:01:11,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386600506] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 10:01:11,849 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 10:01:11,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17, 17] total 45 [2022-01-18 10:01:11,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082293105] [2022-01-18 10:01:11,849 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 10:01:11,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 10:01:11,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:01:11,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 10:01:11,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1708, Unknown=1, NotChecked=84, Total=1980 [2022-01-18 10:01:11,850 INFO L87 Difference]: Start difference. First operand 4250 states and 8575 transitions. Second operand has 45 states, 45 states have (on average 5.088888888888889) internal successors, (229), 45 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:14,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:01:14,263 INFO L93 Difference]: Finished difference Result 9523 states and 19206 transitions. [2022-01-18 10:01:14,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 10:01:14,264 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 5.088888888888889) internal successors, (229), 45 states have internal predecessors, (229), 0 states have call successors, (0), 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 94 [2022-01-18 10:01:14,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:01:14,274 INFO L225 Difference]: With dead ends: 9523 [2022-01-18 10:01:14,274 INFO L226 Difference]: Without dead ends: 9523 [2022-01-18 10:01:14,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 168 SyntacticMatches, 7 SemanticMatches, 82 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1764 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1421, Invalid=5388, Unknown=1, NotChecked=162, Total=6972 [2022-01-18 10:01:14,275 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 3669 mSDsluCounter, 4954 mSDsCounter, 0 mSdLazyCounter, 1399 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3669 SdHoareTripleChecker+Valid, 5346 SdHoareTripleChecker+Invalid, 2211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 1399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 673 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 10:01:14,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3669 Valid, 5346 Invalid, 2211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 1399 Invalid, 0 Unknown, 673 Unchecked, 0.6s Time] [2022-01-18 10:01:14,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9523 states. [2022-01-18 10:01:14,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9523 to 4369. [2022-01-18 10:01:14,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4369 states, 4367 states have (on average 2.0116784978245934) internal successors, (8785), 4368 states have internal predecessors, (8785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:14,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4369 states to 4369 states and 8785 transitions. [2022-01-18 10:01:14,327 INFO L78 Accepts]: Start accepts. Automaton has 4369 states and 8785 transitions. Word has length 94 [2022-01-18 10:01:14,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:01:14,327 INFO L470 AbstractCegarLoop]: Abstraction has 4369 states and 8785 transitions. [2022-01-18 10:01:14,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.088888888888889) internal successors, (229), 45 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:14,327 INFO L276 IsEmpty]: Start isEmpty. Operand 4369 states and 8785 transitions. [2022-01-18 10:01:14,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-18 10:01:14,329 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:01:14,329 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 10:01:14,345 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 10:01:14,530 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,SelfDestructingSolverStorable46 [2022-01-18 10:01:14,530 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:01:14,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:01:14,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1501853757, now seen corresponding path program 3 times [2022-01-18 10:01:14,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:01:14,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770592428] [2022-01-18 10:01:14,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:01:14,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:01:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:01:14,769 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:01:14,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:01:14,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770592428] [2022-01-18 10:01:14,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770592428] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 10:01:14,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481921130] [2022-01-18 10:01:14,770 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 10:01:14,770 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:01:14,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 10:01:14,771 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 10:01:14,772 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 10:01:14,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 10:01:14,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 10:01:14,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 43 conjunts are in the unsatisfiable core [2022-01-18 10:01:14,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 10:01:14,997 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 10:01:14,997 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 10:01:15,124 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 11 treesize of output 7 [2022-01-18 10:01:15,226 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 10:01:15,539 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:01:15,686 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 10:01:15,695 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:01:15,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 10:01:16,026 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_763 (Array Int Int))) (<= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#tid~0#1.base| v_ArrVal_763) |c_~#pqb~0.base|) |c_~#pqb~0.offset|))) is different from false [2022-01-18 10:01:16,052 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:01:16,052 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 18 treesize of output 19 [2022-01-18 10:01:16,059 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:01:16,059 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 30 treesize of output 33 [2022-01-18 10:01:16,062 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 9 treesize of output 7 [2022-01-18 10:01:16,201 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 10:01:16,201 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 13 treesize of output 12 [2022-01-18 10:01:16,209 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:01:16,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481921130] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 10:01:16,209 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 10:01:16,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17, 17] total 45 [2022-01-18 10:01:16,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059790099] [2022-01-18 10:01:16,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 10:01:16,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 10:01:16,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:01:16,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 10:01:16,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=1716, Unknown=1, NotChecked=84, Total=1980 [2022-01-18 10:01:16,211 INFO L87 Difference]: Start difference. First operand 4369 states and 8785 transitions. Second operand has 45 states, 45 states have (on average 5.088888888888889) internal successors, (229), 45 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:18,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:01:18,649 INFO L93 Difference]: Finished difference Result 9891 states and 19888 transitions. [2022-01-18 10:01:18,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-18 10:01:18,650 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 5.088888888888889) internal successors, (229), 45 states have internal predecessors, (229), 0 states have call successors, (0), 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 94 [2022-01-18 10:01:18,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:01:18,661 INFO L225 Difference]: With dead ends: 9891 [2022-01-18 10:01:18,661 INFO L226 Difference]: Without dead ends: 9891 [2022-01-18 10:01:18,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 166 SyntacticMatches, 3 SemanticMatches, 81 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1492 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1362, Invalid=5283, Unknown=1, NotChecked=160, Total=6806 [2022-01-18 10:01:18,662 INFO L933 BasicCegarLoop]: 399 mSDtfsCounter, 3333 mSDsluCounter, 5450 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3333 SdHoareTripleChecker+Valid, 5846 SdHoareTripleChecker+Invalid, 2376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 819 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 10:01:18,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3333 Valid, 5846 Invalid, 2376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1422 Invalid, 0 Unknown, 819 Unchecked, 0.6s Time] [2022-01-18 10:01:18,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9891 states. [2022-01-18 10:01:18,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9891 to 4483. [2022-01-18 10:01:18,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4483 states, 4481 states have (on average 2.0127203749163134) internal successors, (9019), 4482 states have internal predecessors, (9019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:18,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4483 states to 4483 states and 9019 transitions. [2022-01-18 10:01:18,725 INFO L78 Accepts]: Start accepts. Automaton has 4483 states and 9019 transitions. Word has length 94 [2022-01-18 10:01:18,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:01:18,725 INFO L470 AbstractCegarLoop]: Abstraction has 4483 states and 9019 transitions. [2022-01-18 10:01:18,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.088888888888889) internal successors, (229), 45 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:18,725 INFO L276 IsEmpty]: Start isEmpty. Operand 4483 states and 9019 transitions. [2022-01-18 10:01:18,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-01-18 10:01:18,728 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:01:18,728 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 10:01:18,744 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 10:01:18,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:01:18,929 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:01:18,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:01:18,929 INFO L85 PathProgramCache]: Analyzing trace with hash 420528999, now seen corresponding path program 4 times [2022-01-18 10:01:18,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:01:18,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215389729] [2022-01-18 10:01:18,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:01:18,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:01:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:01:19,157 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:01:19,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:01:19,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215389729] [2022-01-18 10:01:19,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215389729] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 10:01:19,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843091348] [2022-01-18 10:01:19,157 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 10:01:19,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:01:19,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 10:01:19,159 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 10:01:19,159 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 10:01:19,252 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 10:01:19,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 10:01:19,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 45 conjunts are in the unsatisfiable core [2022-01-18 10:01:19,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 10:01:19,390 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 10:01:19,390 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 10:01:19,491 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 11 treesize of output 7 [2022-01-18 10:01:19,567 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 10:01:19,867 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:01:20,040 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:01:20,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 10:01:20,382 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_800 (Array Int Int))) (<= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#tid~0#1.base| v_ArrVal_800) |c_~#pqb~0.base|) |c_~#pqb~0.offset|))) is different from false [2022-01-18 10:01:20,404 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:01:20,404 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 18 treesize of output 19 [2022-01-18 10:01:20,409 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:01:20,409 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 30 treesize of output 33 [2022-01-18 10:01:20,411 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 9 treesize of output 7 [2022-01-18 10:01:20,568 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 10:01:20,569 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 13 treesize of output 12 [2022-01-18 10:01:20,577 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:01:20,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843091348] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 10:01:20,578 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 10:01:20,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 17, 17] total 46 [2022-01-18 10:01:20,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653521805] [2022-01-18 10:01:20,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 10:01:20,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-01-18 10:01:20,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:01:20,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-01-18 10:01:20,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1797, Unknown=1, NotChecked=86, Total=2070 [2022-01-18 10:01:20,579 INFO L87 Difference]: Start difference. First operand 4483 states and 9019 transitions. Second operand has 46 states, 46 states have (on average 5.0) internal successors, (230), 46 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:22,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:01:22,982 INFO L93 Difference]: Finished difference Result 9836 states and 19719 transitions. [2022-01-18 10:01:22,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 10:01:22,982 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.0) internal successors, (230), 46 states have internal predecessors, (230), 0 states have call successors, (0), 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 94 [2022-01-18 10:01:22,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:01:22,993 INFO L225 Difference]: With dead ends: 9836 [2022-01-18 10:01:22,993 INFO L226 Difference]: Without dead ends: 9836 [2022-01-18 10:01:22,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 168 SyntacticMatches, 7 SemanticMatches, 80 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1571 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1285, Invalid=5198, Unknown=1, NotChecked=158, Total=6642 [2022-01-18 10:01:22,994 INFO L933 BasicCegarLoop]: 415 mSDtfsCounter, 3536 mSDsluCounter, 5499 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3536 SdHoareTripleChecker+Valid, 5914 SdHoareTripleChecker+Invalid, 2378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 797 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 10:01:22,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3536 Valid, 5914 Invalid, 2378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1452 Invalid, 0 Unknown, 797 Unchecked, 0.6s Time] [2022-01-18 10:01:23,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9836 states. [2022-01-18 10:01:23,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9836 to 4124. [2022-01-18 10:01:23,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4124 states, 4122 states have (on average 2.005337214944202) internal successors, (8266), 4123 states have internal predecessors, (8266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:23,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4124 states to 4124 states and 8266 transitions. [2022-01-18 10:01:23,046 INFO L78 Accepts]: Start accepts. Automaton has 4124 states and 8266 transitions. Word has length 94 [2022-01-18 10:01:23,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:01:23,046 INFO L470 AbstractCegarLoop]: Abstraction has 4124 states and 8266 transitions. [2022-01-18 10:01:23,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.0) internal successors, (230), 46 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:23,046 INFO L276 IsEmpty]: Start isEmpty. Operand 4124 states and 8266 transitions. [2022-01-18 10:01:23,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-18 10:01:23,049 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:01:23,049 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 10:01:23,066 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 10:01:23,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-01-18 10:01:23,250 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:01:23,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:01:23,250 INFO L85 PathProgramCache]: Analyzing trace with hash -579571583, now seen corresponding path program 1 times [2022-01-18 10:01:23,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:01:23,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110863949] [2022-01-18 10:01:23,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:01:23,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:01:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:01:23,404 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:01:23,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:01:23,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110863949] [2022-01-18 10:01:23,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110863949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:01:23,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 10:01:23,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-01-18 10:01:23,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79997598] [2022-01-18 10:01:23,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:01:23,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 10:01:23,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:01:23,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 10:01:23,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-01-18 10:01:23,406 INFO L87 Difference]: Start difference. First operand 4124 states and 8266 transitions. Second operand has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:23,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:01:23,789 INFO L93 Difference]: Finished difference Result 3495 states and 6986 transitions. [2022-01-18 10:01:23,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 10:01:23,790 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 0 states have call successors, (0), 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 10:01:23,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:01:23,799 INFO L225 Difference]: With dead ends: 3495 [2022-01-18 10:01:23,800 INFO L226 Difference]: Without dead ends: 3180 [2022-01-18 10:01:23,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2022-01-18 10:01:23,800 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 662 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 10:01:23,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [662 Valid, 1498 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 10:01:23,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3180 states. [2022-01-18 10:01:23,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3180 to 3172. [2022-01-18 10:01:23,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3172 states, 3170 states have (on average 2.00410094637224) internal successors, (6353), 3171 states have internal predecessors, (6353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:23,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3172 states to 3172 states and 6353 transitions. [2022-01-18 10:01:23,833 INFO L78 Accepts]: Start accepts. Automaton has 3172 states and 6353 transitions. Word has length 96 [2022-01-18 10:01:23,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:01:23,833 INFO L470 AbstractCegarLoop]: Abstraction has 3172 states and 6353 transitions. [2022-01-18 10:01:23,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:23,833 INFO L276 IsEmpty]: Start isEmpty. Operand 3172 states and 6353 transitions. [2022-01-18 10:01:23,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-18 10:01:23,835 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:01:23,836 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2022-01-18 10:01:23,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-18 10:01:23,836 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:01:23,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:01:23,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1471731716, now seen corresponding path program 5 times [2022-01-18 10:01:23,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:01:23,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454026713] [2022-01-18 10:01:23,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:01:23,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:01:23,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:01:24,142 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:01:24,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:01:24,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454026713] [2022-01-18 10:01:24,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454026713] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 10:01:24,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640817016] [2022-01-18 10:01:24,143 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 10:01:24,143 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:01:24,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 10:01:24,144 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 10:01:24,145 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 10:01:24,231 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 10:01:24,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 10:01:24,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-18 10:01:24,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 10:01:24,344 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 10:01:24,344 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 10:01:24,465 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 11 treesize of output 7 [2022-01-18 10:01:24,561 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 10:01:24,875 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:01:25,165 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:01:25,291 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 10:01:25,316 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:01:25,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 10:01:25,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640817016] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 10:01:25,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 10:01:25,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [27] total 47 [2022-01-18 10:01:25,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519870895] [2022-01-18 10:01:25,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 10:01:25,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-18 10:01:25,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:01:25,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-18 10:01:25,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=243, Invalid=1919, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 10:01:25,317 INFO L87 Difference]: Start difference. First operand 3172 states and 6353 transitions. Second operand has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:26,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:01:26,895 INFO L93 Difference]: Finished difference Result 6982 states and 14000 transitions. [2022-01-18 10:01:26,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 10:01:26,896 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-01-18 10:01:26,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:01:26,904 INFO L225 Difference]: With dead ends: 6982 [2022-01-18 10:01:26,904 INFO L226 Difference]: Without dead ends: 6982 [2022-01-18 10:01:26,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1521 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1330, Invalid=4832, Unknown=0, NotChecked=0, Total=6162 [2022-01-18 10:01:26,905 INFO L933 BasicCegarLoop]: 322 mSDtfsCounter, 1907 mSDsluCounter, 2199 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1907 SdHoareTripleChecker+Valid, 2514 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 10:01:26,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1907 Valid, 2514 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 10:01:26,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6982 states. [2022-01-18 10:01:26,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6982 to 3300. [2022-01-18 10:01:26,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3300 states, 3298 states have (on average 2.0051546391752577) internal successors, (6613), 3299 states have internal predecessors, (6613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:26,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3300 states to 3300 states and 6613 transitions. [2022-01-18 10:01:26,942 INFO L78 Accepts]: Start accepts. Automaton has 3300 states and 6613 transitions. Word has length 106 [2022-01-18 10:01:26,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:01:26,942 INFO L470 AbstractCegarLoop]: Abstraction has 3300 states and 6613 transitions. [2022-01-18 10:01:26,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.818181818181818) internal successors, (106), 22 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:26,942 INFO L276 IsEmpty]: Start isEmpty. Operand 3300 states and 6613 transitions. [2022-01-18 10:01:26,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-18 10:01:26,944 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:01:26,944 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2022-01-18 10:01:26,960 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 10:01:27,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:01:27,145 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:01:27,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:01:27,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1681139458, now seen corresponding path program 6 times [2022-01-18 10:01:27,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:01:27,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439822376] [2022-01-18 10:01:27,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:01:27,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:01:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:01:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:01:27,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:01:27,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439822376] [2022-01-18 10:01:27,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439822376] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 10:01:27,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769182065] [2022-01-18 10:01:27,485 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 10:01:27,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:01:27,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 10:01:27,486 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 10:01:27,486 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 10:01:27,582 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 10:01:27,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 10:01:27,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-18 10:01:27,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 10:01:27,706 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 10:01:27,706 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 10:01:27,812 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 11 treesize of output 7 [2022-01-18 10:01:27,902 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 10:01:28,153 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:01:28,529 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:01:28,612 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 10:01:28,638 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:01:28,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 10:01:29,211 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_916 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#tid~0#1.base| v_ArrVal_916) |c_~#pqb~0.base|) |c_~#pqb~0.offset|) 1))) is different from false [2022-01-18 10:01:29,235 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:01:29,235 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 20 treesize of output 21 [2022-01-18 10:01:29,240 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:01:29,240 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 34 treesize of output 37 [2022-01-18 10:01:29,244 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 11 treesize of output 9 [2022-01-18 10:01:29,379 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 10:01:29,379 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 13 treesize of output 12 [2022-01-18 10:01:29,387 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:01:29,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769182065] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 10:01:29,387 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 10:01:29,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 22, 22] total 62 [2022-01-18 10:01:29,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984982761] [2022-01-18 10:01:29,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 10:01:29,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-01-18 10:01:29,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:01:29,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-01-18 10:01:29,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=386, Invalid=3277, Unknown=1, NotChecked=118, Total=3782 [2022-01-18 10:01:29,389 INFO L87 Difference]: Start difference. First operand 3300 states and 6613 transitions. Second operand has 62 states, 62 states have (on average 4.370967741935484) internal successors, (271), 62 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:34,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:01:34,514 INFO L93 Difference]: Finished difference Result 12947 states and 26179 transitions. [2022-01-18 10:01:34,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-01-18 10:01:34,514 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.370967741935484) internal successors, (271), 62 states have internal predecessors, (271), 0 states have call successors, (0), 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 106 [2022-01-18 10:01:34,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:01:34,539 INFO L225 Difference]: With dead ends: 12947 [2022-01-18 10:01:34,539 INFO L226 Difference]: Without dead ends: 12947 [2022-01-18 10:01:34,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 194 SyntacticMatches, 9 SemanticMatches, 160 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8181 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=4214, Invalid=21549, Unknown=1, NotChecked=318, Total=26082 [2022-01-18 10:01:34,542 INFO L933 BasicCegarLoop]: 460 mSDtfsCounter, 4671 mSDsluCounter, 10297 mSDsCounter, 0 mSdLazyCounter, 3199 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4671 SdHoareTripleChecker+Valid, 10740 SdHoareTripleChecker+Invalid, 4448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 3199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1163 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 10:01:34,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4671 Valid, 10740 Invalid, 4448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 3199 Invalid, 0 Unknown, 1163 Unchecked, 1.1s Time] [2022-01-18 10:01:34,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12947 states. [2022-01-18 10:01:34,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12947 to 2581. [2022-01-18 10:01:34,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2581 states, 2579 states have (on average 1.9945715393563397) internal successors, (5144), 2580 states have internal predecessors, (5144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:34,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2581 states to 2581 states and 5144 transitions. [2022-01-18 10:01:34,620 INFO L78 Accepts]: Start accepts. Automaton has 2581 states and 5144 transitions. Word has length 106 [2022-01-18 10:01:34,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:01:34,621 INFO L470 AbstractCegarLoop]: Abstraction has 2581 states and 5144 transitions. [2022-01-18 10:01:34,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.370967741935484) internal successors, (271), 62 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:34,621 INFO L276 IsEmpty]: Start isEmpty. Operand 2581 states and 5144 transitions. [2022-01-18 10:01:34,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-18 10:01:34,622 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:01:34,623 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2022-01-18 10:01:34,645 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 10:01:34,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:01:34,839 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:01:34,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:01:34,840 INFO L85 PathProgramCache]: Analyzing trace with hash -207921658, now seen corresponding path program 7 times [2022-01-18 10:01:34,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:01:34,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912720006] [2022-01-18 10:01:34,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:01:34,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:01:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:01:35,211 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:01:35,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:01:35,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912720006] [2022-01-18 10:01:35,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912720006] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 10:01:35,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451928739] [2022-01-18 10:01:35,212 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 10:01:35,212 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:01:35,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 10:01:35,213 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 10:01:35,213 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 10:01:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:01:35,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-18 10:01:35,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 10:01:35,454 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 10:01:35,455 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 10:01:35,567 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 11 treesize of output 7 [2022-01-18 10:01:35,649 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 10:01:36,083 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:01:36,458 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:01:36,510 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 10:01:36,537 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:01:36,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 10:01:44,905 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_967 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#tid~0#1.base| v_ArrVal_967) |c_~#pqb~0.base|) |c_~#pqb~0.offset|) 1))) is different from false [2022-01-18 10:01:44,933 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:01:44,933 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 20 treesize of output 21 [2022-01-18 10:01:44,940 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:01:44,940 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 34 treesize of output 37 [2022-01-18 10:01:44,943 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 11 treesize of output 9 [2022-01-18 10:01:45,148 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 10:01:45,148 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 13 treesize of output 12 [2022-01-18 10:01:45,156 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:01:45,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451928739] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 10:01:45,156 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 10:01:45,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 22] total 64 [2022-01-18 10:01:45,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397430638] [2022-01-18 10:01:45,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 10:01:45,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-18 10:01:45,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:01:45,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-18 10:01:45,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=3553, Unknown=4, NotChecked=122, Total=4032 [2022-01-18 10:01:45,158 INFO L87 Difference]: Start difference. First operand 2581 states and 5144 transitions. Second operand has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:48,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:01:48,434 INFO L93 Difference]: Finished difference Result 4446 states and 8836 transitions. [2022-01-18 10:01:48,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-18 10:01:48,435 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 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 106 [2022-01-18 10:01:48,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:01:48,441 INFO L225 Difference]: With dead ends: 4446 [2022-01-18 10:01:48,441 INFO L226 Difference]: Without dead ends: 4446 [2022-01-18 10:01:48,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 178 SyntacticMatches, 11 SemanticMatches, 106 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3334 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=1941, Invalid=9401, Unknown=4, NotChecked=210, Total=11556 [2022-01-18 10:01:48,444 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 3221 mSDsluCounter, 6352 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3221 SdHoareTripleChecker+Valid, 6652 SdHoareTripleChecker+Invalid, 2708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 970 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 10:01:48,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3221 Valid, 6652 Invalid, 2708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1617 Invalid, 0 Unknown, 970 Unchecked, 0.7s Time] [2022-01-18 10:01:48,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4446 states. [2022-01-18 10:01:48,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4446 to 2577. [2022-01-18 10:01:48,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2577 states, 2575 states have (on average 1.9945631067961165) internal successors, (5136), 2576 states have internal predecessors, (5136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:48,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2577 states to 2577 states and 5136 transitions. [2022-01-18 10:01:48,504 INFO L78 Accepts]: Start accepts. Automaton has 2577 states and 5136 transitions. Word has length 106 [2022-01-18 10:01:48,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:01:48,504 INFO L470 AbstractCegarLoop]: Abstraction has 2577 states and 5136 transitions. [2022-01-18 10:01:48,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:01:48,504 INFO L276 IsEmpty]: Start isEmpty. Operand 2577 states and 5136 transitions. [2022-01-18 10:01:48,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-18 10:01:48,506 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:01:48,506 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2022-01-18 10:01:48,531 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 10:01:48,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:01:48,711 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:01:48,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:01:48,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1735581496, now seen corresponding path program 8 times [2022-01-18 10:01:48,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:01:48,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159826232] [2022-01-18 10:01:48,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:01:48,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:01:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:01:49,157 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:01:49,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:01:49,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159826232] [2022-01-18 10:01:49,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159826232] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 10:01:49,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [540309045] [2022-01-18 10:01:49,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 10:01:49,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:01:49,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 10:01:49,159 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 10:01:49,160 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 10:01:49,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 10:01:49,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 10:01:49,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-18 10:01:49,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 10:01:49,424 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 10:01:49,424 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 10:01:49,550 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 11 treesize of output 7 [2022-01-18 10:01:49,645 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 10:01:50,140 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:01:50,540 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:01:50,599 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 10:01:50,632 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:01:50,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 10:02:01,106 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1018 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#tid~0#1.base| v_ArrVal_1018) |c_~#pqb~0.base|) |c_~#pqb~0.offset|) 1))) is different from false [2022-01-18 10:02:01,136 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:02:01,136 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 20 treesize of output 21 [2022-01-18 10:02:01,144 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:02:01,145 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 34 treesize of output 37 [2022-01-18 10:02:01,147 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 11 treesize of output 9 [2022-01-18 10:02:01,320 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 10:02:01,321 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 13 treesize of output 12 [2022-01-18 10:02:01,329 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:02:01,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [540309045] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 10:02:01,329 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 10:02:01,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 22] total 64 [2022-01-18 10:02:01,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252432500] [2022-01-18 10:02:01,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 10:02:01,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-18 10:02:01,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:02:01,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-18 10:02:01,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=3544, Unknown=3, NotChecked=122, Total=4032 [2022-01-18 10:02:01,331 INFO L87 Difference]: Start difference. First operand 2577 states and 5136 transitions. Second operand has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:02:05,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:02:05,303 INFO L93 Difference]: Finished difference Result 7327 states and 14654 transitions. [2022-01-18 10:02:05,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-01-18 10:02:05,304 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 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 106 [2022-01-18 10:02:05,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:02:05,312 INFO L225 Difference]: With dead ends: 7327 [2022-01-18 10:02:05,312 INFO L226 Difference]: Without dead ends: 7327 [2022-01-18 10:02:05,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 185 SyntacticMatches, 19 SemanticMatches, 124 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 5363 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=2174, Invalid=13327, Unknown=3, NotChecked=246, Total=15750 [2022-01-18 10:02:05,313 INFO L933 BasicCegarLoop]: 356 mSDtfsCounter, 2652 mSDsluCounter, 7018 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2652 SdHoareTripleChecker+Valid, 7367 SdHoareTripleChecker+Invalid, 3142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1503 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 10:02:05,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2652 Valid, 7367 Invalid, 3142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1558 Invalid, 0 Unknown, 1503 Unchecked, 0.8s Time] [2022-01-18 10:02:05,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7327 states. [2022-01-18 10:02:05,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7327 to 2580. [2022-01-18 10:02:05,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2580 states, 2578 states have (on average 1.9945694336695112) internal successors, (5142), 2579 states have internal predecessors, (5142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:02:05,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 5142 transitions. [2022-01-18 10:02:05,346 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 5142 transitions. Word has length 106 [2022-01-18 10:02:05,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:02:05,346 INFO L470 AbstractCegarLoop]: Abstraction has 2580 states and 5142 transitions. [2022-01-18 10:02:05,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:02:05,346 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 5142 transitions. [2022-01-18 10:02:05,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-18 10:02:05,348 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:02:05,348 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2022-01-18 10:02:05,364 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 10:02:05,549 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,SelfDestructingSolverStorable53 [2022-01-18 10:02:05,549 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:02:05,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:02:05,550 INFO L85 PathProgramCache]: Analyzing trace with hash 444086522, now seen corresponding path program 9 times [2022-01-18 10:02:05,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:02:05,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926033438] [2022-01-18 10:02:05,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:02:05,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:02:05,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:02:06,037 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:02:06,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:02:06,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926033438] [2022-01-18 10:02:06,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926033438] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 10:02:06,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513630400] [2022-01-18 10:02:06,038 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 10:02:06,038 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:02:06,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 10:02:06,040 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 10:02:06,040 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 10:02:06,144 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 10:02:06,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 10:02:06,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-18 10:02:06,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 10:02:06,279 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 10:02:06,280 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 10:02:06,413 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 11 treesize of output 7 [2022-01-18 10:02:06,506 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 10:02:07,007 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:02:07,434 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:02:07,498 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 10:02:07,533 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:02:07,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 10:02:12,420 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1069 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#tid~0#1.base| v_ArrVal_1069) |c_~#pqb~0.base|) |c_~#pqb~0.offset|) 1))) is different from false [2022-01-18 10:02:12,444 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:02:12,444 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 20 treesize of output 21 [2022-01-18 10:02:12,450 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:02:12,450 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 34 treesize of output 37 [2022-01-18 10:02:12,452 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 11 treesize of output 9 [2022-01-18 10:02:12,631 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 10:02:12,631 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 13 treesize of output 12 [2022-01-18 10:02:12,640 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:02:12,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513630400] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 10:02:12,640 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 10:02:12,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 22] total 64 [2022-01-18 10:02:12,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549765269] [2022-01-18 10:02:12,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 10:02:12,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-18 10:02:12,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:02:12,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-18 10:02:12,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=348, Invalid=3560, Unknown=2, NotChecked=122, Total=4032 [2022-01-18 10:02:12,642 INFO L87 Difference]: Start difference. First operand 2580 states and 5142 transitions. Second operand has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:02:19,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:02:19,397 INFO L93 Difference]: Finished difference Result 6230 states and 12435 transitions. [2022-01-18 10:02:19,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-01-18 10:02:19,397 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 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 106 [2022-01-18 10:02:19,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:02:19,403 INFO L225 Difference]: With dead ends: 6230 [2022-01-18 10:02:19,404 INFO L226 Difference]: Without dead ends: 6230 [2022-01-18 10:02:19,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 183 SyntacticMatches, 21 SemanticMatches, 145 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 6875 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=4008, Invalid=17164, Unknown=2, NotChecked=288, Total=21462 [2022-01-18 10:02:19,405 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 4191 mSDsluCounter, 7488 mSDsCounter, 0 mSdLazyCounter, 1941 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4191 SdHoareTripleChecker+Valid, 7829 SdHoareTripleChecker+Invalid, 4047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1939 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-18 10:02:19,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4191 Valid, 7829 Invalid, 4047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1941 Invalid, 0 Unknown, 1939 Unchecked, 1.0s Time] [2022-01-18 10:02:19,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6230 states. [2022-01-18 10:02:19,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6230 to 2573. [2022-01-18 10:02:19,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2573 states, 2571 states have (on average 1.9945546479968883) internal successors, (5128), 2572 states have internal predecessors, (5128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:02:19,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 5128 transitions. [2022-01-18 10:02:19,432 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 5128 transitions. Word has length 106 [2022-01-18 10:02:19,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:02:19,432 INFO L470 AbstractCegarLoop]: Abstraction has 2573 states and 5128 transitions. [2022-01-18 10:02:19,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:02:19,433 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 5128 transitions. [2022-01-18 10:02:19,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-18 10:02:19,434 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:02:19,434 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2022-01-18 10:02:19,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-01-18 10:02:19,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:02:19,635 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:02:19,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:02:19,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1988436372, now seen corresponding path program 10 times [2022-01-18 10:02:19,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:02:19,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283381657] [2022-01-18 10:02:19,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:02:19,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:02:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:02:20,149 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:02:20,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:02:20,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283381657] [2022-01-18 10:02:20,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283381657] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 10:02:20,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140500320] [2022-01-18 10:02:20,150 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 10:02:20,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:02:20,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 10:02:20,151 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 10:02:20,152 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 10:02:20,255 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 10:02:20,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 10:02:20,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 10:02:20,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 10:02:20,402 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 10:02:20,402 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 10:02:20,530 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 11 treesize of output 7 [2022-01-18 10:02:20,623 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 10:02:21,121 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:02:21,542 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:02:21,666 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:02:21,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 10:02:33,587 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1120 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#tid~0#1.base| v_ArrVal_1120) |c_~#pqb~0.base|) |c_~#pqb~0.offset|) 1))) is different from false [2022-01-18 10:02:33,612 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:02:33,612 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 20 treesize of output 21 [2022-01-18 10:02:33,619 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:02:33,619 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 34 treesize of output 37 [2022-01-18 10:02:33,622 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 11 treesize of output 9 [2022-01-18 10:02:33,830 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 10:02:33,830 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 13 treesize of output 12 [2022-01-18 10:02:33,841 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:02:33,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140500320] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 10:02:33,841 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 10:02:33,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 22] total 64 [2022-01-18 10:02:33,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316890289] [2022-01-18 10:02:33,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 10:02:33,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-18 10:02:33,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:02:33,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-18 10:02:33,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=391, Invalid=3515, Unknown=4, NotChecked=122, Total=4032 [2022-01-18 10:02:33,843 INFO L87 Difference]: Start difference. First operand 2573 states and 5128 transitions. Second operand has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:03:03,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:03:03,040 INFO L93 Difference]: Finished difference Result 15296 states and 30680 transitions. [2022-01-18 10:03:03,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2022-01-18 10:03:03,040 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 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 106 [2022-01-18 10:03:03,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:03:03,060 INFO L225 Difference]: With dead ends: 15296 [2022-01-18 10:03:03,060 INFO L226 Difference]: Without dead ends: 15296 [2022-01-18 10:03:03,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 189 SyntacticMatches, 6 SemanticMatches, 168 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 9748 ImplicationChecksByTransitivity, 39.8s TimeCoverageRelationStatistics Valid=3634, Invalid=24753, Unknown=9, NotChecked=334, Total=28730 [2022-01-18 10:03:03,063 INFO L933 BasicCegarLoop]: 427 mSDtfsCounter, 3308 mSDsluCounter, 13982 mSDsCounter, 0 mSdLazyCounter, 2812 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3308 SdHoareTripleChecker+Valid, 14398 SdHoareTripleChecker+Invalid, 6334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3473 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 10:03:03,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3308 Valid, 14398 Invalid, 6334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2812 Invalid, 0 Unknown, 3473 Unchecked, 1.5s Time] [2022-01-18 10:03:03,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15296 states. [2022-01-18 10:03:03,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15296 to 2599. [2022-01-18 10:03:03,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2599 states, 2597 states have (on average 1.993068925683481) internal successors, (5176), 2598 states have internal predecessors, (5176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:03:03,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2599 states to 2599 states and 5176 transitions. [2022-01-18 10:03:03,151 INFO L78 Accepts]: Start accepts. Automaton has 2599 states and 5176 transitions. Word has length 106 [2022-01-18 10:03:03,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:03:03,151 INFO L470 AbstractCegarLoop]: Abstraction has 2599 states and 5176 transitions. [2022-01-18 10:03:03,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:03:03,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2599 states and 5176 transitions. [2022-01-18 10:03:03,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-18 10:03:03,152 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:03:03,153 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2022-01-18 10:03:03,170 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 10:03:03,355 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,SelfDestructingSolverStorable55 [2022-01-18 10:03:03,356 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:03:03,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:03:03,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1681124850, now seen corresponding path program 11 times [2022-01-18 10:03:03,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:03:03,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757746722] [2022-01-18 10:03:03,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:03:03,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:03:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:03:03,974 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:03:03,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:03:03,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757746722] [2022-01-18 10:03:03,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757746722] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 10:03:03,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634816864] [2022-01-18 10:03:03,974 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 10:03:03,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:03:03,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 10:03:03,975 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 10:03:03,976 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 10:03:04,074 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 10:03:04,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 10:03:04,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-18 10:03:04,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 10:03:04,225 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 10:03:04,225 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 10:03:04,371 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 11 treesize of output 7 [2022-01-18 10:03:04,471 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 10:03:05,024 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:03:05,479 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:03:05,551 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 10:03:05,590 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:03:05,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 10:03:13,007 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1171 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#tid~0#1.base| v_ArrVal_1171) |c_~#pqb~0.base|) |c_~#pqb~0.offset|) 1))) is different from false [2022-01-18 10:03:13,047 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:03:13,047 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 20 treesize of output 21 [2022-01-18 10:03:13,056 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:03:13,057 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 34 treesize of output 37 [2022-01-18 10:03:13,060 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 11 treesize of output 9 [2022-01-18 10:03:13,302 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 10:03:13,302 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 13 treesize of output 12 [2022-01-18 10:03:13,313 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:03:13,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634816864] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 10:03:13,314 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 10:03:13,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 22] total 64 [2022-01-18 10:03:13,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708160775] [2022-01-18 10:03:13,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 10:03:13,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-18 10:03:13,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:03:13,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-18 10:03:13,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=3548, Unknown=3, NotChecked=122, Total=4032 [2022-01-18 10:03:13,316 INFO L87 Difference]: Start difference. First operand 2599 states and 5176 transitions. Second operand has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:03:21,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:03:21,002 INFO L93 Difference]: Finished difference Result 6773 states and 13528 transitions. [2022-01-18 10:03:21,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-01-18 10:03:21,003 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 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 106 [2022-01-18 10:03:21,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:03:21,011 INFO L225 Difference]: With dead ends: 6773 [2022-01-18 10:03:21,011 INFO L226 Difference]: Without dead ends: 6773 [2022-01-18 10:03:21,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 181 SyntacticMatches, 37 SemanticMatches, 125 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6116 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=2169, Invalid=13582, Unknown=3, NotChecked=248, Total=16002 [2022-01-18 10:03:21,013 INFO L933 BasicCegarLoop]: 427 mSDtfsCounter, 2266 mSDsluCounter, 10359 mSDsCounter, 0 mSdLazyCounter, 2155 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2266 SdHoareTripleChecker+Valid, 10775 SdHoareTripleChecker+Invalid, 3613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 2155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1408 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 10:03:21,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2266 Valid, 10775 Invalid, 3613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 2155 Invalid, 0 Unknown, 1408 Unchecked, 1.4s Time] [2022-01-18 10:03:21,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6773 states. [2022-01-18 10:03:21,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6773 to 2602. [2022-01-18 10:03:21,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2602 states, 2600 states have (on average 1.993076923076923) internal successors, (5182), 2601 states have internal predecessors, (5182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:03:21,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2602 states to 2602 states and 5182 transitions. [2022-01-18 10:03:21,046 INFO L78 Accepts]: Start accepts. Automaton has 2602 states and 5182 transitions. Word has length 106 [2022-01-18 10:03:21,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:03:21,046 INFO L470 AbstractCegarLoop]: Abstraction has 2602 states and 5182 transitions. [2022-01-18 10:03:21,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:03:21,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2602 states and 5182 transitions. [2022-01-18 10:03:21,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-18 10:03:21,048 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:03:21,048 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2022-01-18 10:03:21,070 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 10:03:21,266 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,SelfDestructingSolverStorable56 [2022-01-18 10:03:21,266 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:03:21,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:03:21,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1322347472, now seen corresponding path program 12 times [2022-01-18 10:03:21,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:03:21,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681906835] [2022-01-18 10:03:21,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:03:21,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:03:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:03:21,988 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:03:21,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:03:21,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681906835] [2022-01-18 10:03:21,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681906835] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 10:03:21,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98458182] [2022-01-18 10:03:21,989 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 10:03:21,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:03:21,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 10:03:21,990 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 10:03:21,991 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 10:03:22,098 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 10:03:22,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 10:03:22,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-18 10:03:22,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 10:03:22,269 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 10:03:22,269 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 10:03:22,448 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 11 treesize of output 7 [2022-01-18 10:03:22,566 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 10:03:23,215 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:03:23,767 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:03:23,853 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 10:03:23,901 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:03:23,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 10:03:31,064 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1222 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#tid~0#1.base| v_ArrVal_1222) |c_~#pqb~0.base|) |c_~#pqb~0.offset|) 1))) is different from false [2022-01-18 10:03:31,095 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:03:31,095 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 20 treesize of output 21 [2022-01-18 10:03:31,104 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:03:31,105 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 34 treesize of output 37 [2022-01-18 10:03:31,108 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 11 treesize of output 9 [2022-01-18 10:03:31,367 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 10:03:31,367 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 13 treesize of output 12 [2022-01-18 10:03:31,377 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:03:31,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98458182] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 10:03:31,377 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 10:03:31,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 22] total 64 [2022-01-18 10:03:31,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143944418] [2022-01-18 10:03:31,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 10:03:31,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-18 10:03:31,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:03:31,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-18 10:03:31,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=3556, Unknown=2, NotChecked=122, Total=4032 [2022-01-18 10:03:31,379 INFO L87 Difference]: Start difference. First operand 2602 states and 5182 transitions. Second operand has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:03:37,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:03:37,549 INFO L93 Difference]: Finished difference Result 5834 states and 11662 transitions. [2022-01-18 10:03:37,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-18 10:03:37,550 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 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 106 [2022-01-18 10:03:37,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:03:37,557 INFO L225 Difference]: With dead ends: 5834 [2022-01-18 10:03:37,557 INFO L226 Difference]: Without dead ends: 5834 [2022-01-18 10:03:37,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 186 SyntacticMatches, 4 SemanticMatches, 115 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3779 ImplicationChecksByTransitivity, 12.4s TimeCoverageRelationStatistics Valid=1769, Invalid=11573, Unknown=2, NotChecked=228, Total=13572 [2022-01-18 10:03:37,558 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 1897 mSDsluCounter, 10193 mSDsCounter, 0 mSdLazyCounter, 2316 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 10577 SdHoareTripleChecker+Invalid, 3905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1571 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 10:03:37,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1897 Valid, 10577 Invalid, 3905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2316 Invalid, 0 Unknown, 1571 Unchecked, 1.8s Time] [2022-01-18 10:03:37,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5834 states. [2022-01-18 10:03:37,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5834 to 2585. [2022-01-18 10:03:37,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2585 states, 2583 states have (on average 1.9930313588850175) internal successors, (5148), 2584 states have internal predecessors, (5148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:03:37,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2585 states to 2585 states and 5148 transitions. [2022-01-18 10:03:37,586 INFO L78 Accepts]: Start accepts. Automaton has 2585 states and 5148 transitions. Word has length 106 [2022-01-18 10:03:37,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:03:37,587 INFO L470 AbstractCegarLoop]: Abstraction has 2585 states and 5148 transitions. [2022-01-18 10:03:37,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:03:37,587 INFO L276 IsEmpty]: Start isEmpty. Operand 2585 states and 5148 transitions. [2022-01-18 10:03:37,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-18 10:03:37,588 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:03:37,588 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2022-01-18 10:03:37,605 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 10:03:37,788 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,SelfDestructingSolverStorable57 [2022-01-18 10:03:37,789 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:03:37,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:03:37,789 INFO L85 PathProgramCache]: Analyzing trace with hash -525088272, now seen corresponding path program 13 times [2022-01-18 10:03:37,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:03:37,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625503300] [2022-01-18 10:03:37,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:03:37,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:03:37,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:03:38,610 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:03:38,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:03:38,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625503300] [2022-01-18 10:03:38,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625503300] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 10:03:38,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385822218] [2022-01-18 10:03:38,610 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 10:03:38,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:03:38,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 10:03:38,612 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 10:03:38,612 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 10:03:38,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:03:38,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-18 10:03:38,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 10:03:38,904 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 10:03:38,904 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 10:03:39,085 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 11 treesize of output 7 [2022-01-18 10:03:39,283 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 10:03:40,056 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:03:40,634 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:03:40,728 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 10:03:40,778 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:03:40,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 10:04:03,296 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1273 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#tid~0#1.base| v_ArrVal_1273) |c_~#pqb~0.base|) |c_~#pqb~0.offset|) 1))) is different from false [2022-01-18 10:04:03,334 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:04:03,335 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 20 treesize of output 21 [2022-01-18 10:04:03,349 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:04:03,349 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 34 treesize of output 37 [2022-01-18 10:04:03,353 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 11 treesize of output 9 [2022-01-18 10:04:03,634 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 10:04:03,634 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 13 treesize of output 12 [2022-01-18 10:04:03,643 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:04:03,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385822218] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 10:04:03,644 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 10:04:03,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 22] total 64 [2022-01-18 10:04:03,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162272141] [2022-01-18 10:04:03,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 10:04:03,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-18 10:04:03,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:04:03,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-18 10:04:03,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=3527, Unknown=7, NotChecked=122, Total=4032 [2022-01-18 10:04:03,645 INFO L87 Difference]: Start difference. First operand 2585 states and 5148 transitions. Second operand has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:04:57,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:04:57,474 INFO L93 Difference]: Finished difference Result 15288 states and 30642 transitions. [2022-01-18 10:04:57,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-01-18 10:04:57,474 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 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 106 [2022-01-18 10:04:57,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:04:57,492 INFO L225 Difference]: With dead ends: 15288 [2022-01-18 10:04:57,492 INFO L226 Difference]: Without dead ends: 15288 [2022-01-18 10:04:57,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 187 SyntacticMatches, 7 SemanticMatches, 164 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 9219 ImplicationChecksByTransitivity, 74.6s TimeCoverageRelationStatistics Valid=3498, Invalid=23549, Unknown=17, NotChecked=326, Total=27390 [2022-01-18 10:04:57,495 INFO L933 BasicCegarLoop]: 477 mSDtfsCounter, 3390 mSDsluCounter, 14535 mSDsCounter, 0 mSdLazyCounter, 2471 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3390 SdHoareTripleChecker+Valid, 15010 SdHoareTripleChecker+Invalid, 6392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3839 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-18 10:04:57,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3390 Valid, 15010 Invalid, 6392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2471 Invalid, 0 Unknown, 3839 Unchecked, 2.3s Time] [2022-01-18 10:04:57,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15288 states. [2022-01-18 10:04:57,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15288 to 2612. [2022-01-18 10:04:57,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2612 states, 2610 states have (on average 1.993103448275862) internal successors, (5202), 2611 states have internal predecessors, (5202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:04:57,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2612 states to 2612 states and 5202 transitions. [2022-01-18 10:04:57,557 INFO L78 Accepts]: Start accepts. Automaton has 2612 states and 5202 transitions. Word has length 106 [2022-01-18 10:04:57,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:04:57,557 INFO L470 AbstractCegarLoop]: Abstraction has 2612 states and 5202 transitions. [2022-01-18 10:04:57,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:04:57,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2612 states and 5202 transitions. [2022-01-18 10:04:57,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-18 10:04:57,558 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:04:57,559 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2022-01-18 10:04:57,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 10:04:57,759 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,SelfDestructingSolverStorable58 [2022-01-18 10:04:57,759 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:04:57,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:04:57,759 INFO L85 PathProgramCache]: Analyzing trace with hash -373288528, now seen corresponding path program 14 times [2022-01-18 10:04:57,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:04:57,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653226382] [2022-01-18 10:04:57,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:04:57,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:04:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:04:58,578 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:04:58,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:04:58,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653226382] [2022-01-18 10:04:58,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653226382] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 10:04:58,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542888260] [2022-01-18 10:04:58,578 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 10:04:58,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:04:58,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 10:04:58,580 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 10:04:58,580 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 10:04:58,691 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 10:04:58,691 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 10:04:58,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-18 10:04:58,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 10:04:58,898 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 10:04:58,899 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 10:04:59,131 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 11 treesize of output 7 [2022-01-18 10:04:59,278 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 10:05:00,133 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:05:00,833 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:05:00,937 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 10:05:01,001 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:05:01,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 10:05:10,579 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1324 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#tid~0#1.base| v_ArrVal_1324) |c_~#pqb~0.base|) |c_~#pqb~0.offset|) 1))) is different from false [2022-01-18 10:05:10,616 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:05:10,617 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 20 treesize of output 21 [2022-01-18 10:05:10,629 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:05:10,629 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 34 treesize of output 37 [2022-01-18 10:05:10,634 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 11 treesize of output 9 [2022-01-18 10:05:10,945 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 10:05:10,945 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 13 treesize of output 12 [2022-01-18 10:05:10,955 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:05:10,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542888260] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 10:05:10,955 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 10:05:10,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 22] total 64 [2022-01-18 10:05:10,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803040654] [2022-01-18 10:05:10,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 10:05:10,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-18 10:05:10,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:05:10,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-18 10:05:10,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=3564, Unknown=4, NotChecked=122, Total=4032 [2022-01-18 10:05:10,957 INFO L87 Difference]: Start difference. First operand 2612 states and 5202 transitions. Second operand has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:05:13,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:05:13,877 INFO L93 Difference]: Finished difference Result 5081 states and 10132 transitions. [2022-01-18 10:05:13,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 10:05:13,877 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 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 106 [2022-01-18 10:05:13,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:05:13,883 INFO L225 Difference]: With dead ends: 5081 [2022-01-18 10:05:13,883 INFO L226 Difference]: Without dead ends: 5081 [2022-01-18 10:05:13,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 176 SyntacticMatches, 8 SemanticMatches, 84 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2258 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=789, Invalid=6351, Unknown=4, NotChecked=166, Total=7310 [2022-01-18 10:05:13,885 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 1231 mSDsluCounter, 6687 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1231 SdHoareTripleChecker+Valid, 7017 SdHoareTripleChecker+Invalid, 1980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1046 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 10:05:13,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1231 Valid, 7017 Invalid, 1980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 898 Invalid, 0 Unknown, 1046 Unchecked, 0.8s Time] [2022-01-18 10:05:13,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5081 states. [2022-01-18 10:05:13,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5081 to 2803. [2022-01-18 10:05:13,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2803 states, 2801 states have (on average 1.9892895394501964) internal successors, (5572), 2802 states have internal predecessors, (5572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:05:13,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2803 states to 2803 states and 5572 transitions. [2022-01-18 10:05:13,928 INFO L78 Accepts]: Start accepts. Automaton has 2803 states and 5572 transitions. Word has length 106 [2022-01-18 10:05:13,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:05:13,928 INFO L470 AbstractCegarLoop]: Abstraction has 2803 states and 5572 transitions. [2022-01-18 10:05:13,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:05:13,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2803 states and 5572 transitions. [2022-01-18 10:05:13,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-18 10:05:13,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:05:13,931 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2022-01-18 10:05:13,957 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 10:05:14,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:05:14,152 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:05:14,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:05:14,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1664783502, now seen corresponding path program 15 times [2022-01-18 10:05:14,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:05:14,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463405999] [2022-01-18 10:05:14,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:05:14,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:05:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:05:15,237 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:05:15,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:05:15,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463405999] [2022-01-18 10:05:15,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463405999] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 10:05:15,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313078526] [2022-01-18 10:05:15,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 10:05:15,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:05:15,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 10:05:15,239 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 10:05:15,240 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 10:05:15,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 10:05:15,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 10:05:15,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-18 10:05:15,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 10:05:15,604 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 10:05:15,604 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 10:05:15,853 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 11 treesize of output 7 [2022-01-18 10:05:16,035 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 10:05:16,991 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:05:17,731 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:05:17,841 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 10:05:17,900 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:05:17,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 10:05:29,234 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1375 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#tid~0#1.base| v_ArrVal_1375) |c_~#pqb~0.base|) |c_~#pqb~0.offset|) 1))) is different from false [2022-01-18 10:05:29,285 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:05:29,285 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 20 treesize of output 21 [2022-01-18 10:05:29,299 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:05:29,299 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 34 treesize of output 37 [2022-01-18 10:05:29,305 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 11 treesize of output 9 [2022-01-18 10:05:29,643 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 10:05:29,644 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 13 treesize of output 12 [2022-01-18 10:05:29,653 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:05:29,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313078526] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 10:05:29,653 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 10:05:29,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 22] total 64 [2022-01-18 10:05:29,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859912164] [2022-01-18 10:05:29,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 10:05:29,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-18 10:05:29,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:05:29,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-18 10:05:29,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=3570, Unknown=4, NotChecked=122, Total=4032 [2022-01-18 10:05:29,655 INFO L87 Difference]: Start difference. First operand 2803 states and 5572 transitions. Second operand has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:05:38,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:05:38,216 INFO L93 Difference]: Finished difference Result 7736 states and 15421 transitions. [2022-01-18 10:05:38,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2022-01-18 10:05:38,216 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 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 106 [2022-01-18 10:05:38,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:05:38,224 INFO L225 Difference]: With dead ends: 7736 [2022-01-18 10:05:38,224 INFO L226 Difference]: Without dead ends: 7736 [2022-01-18 10:05:38,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 185 SyntacticMatches, 12 SemanticMatches, 133 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 5688 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=2147, Invalid=15675, Unknown=4, NotChecked=264, Total=18090 [2022-01-18 10:05:38,225 INFO L933 BasicCegarLoop]: 522 mSDtfsCounter, 2386 mSDsluCounter, 14996 mSDsCounter, 0 mSdLazyCounter, 2083 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2386 SdHoareTripleChecker+Valid, 15517 SdHoareTripleChecker+Invalid, 5170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3015 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 10:05:38,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2386 Valid, 15517 Invalid, 5170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 2083 Invalid, 0 Unknown, 3015 Unchecked, 1.8s Time] [2022-01-18 10:05:38,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7736 states. [2022-01-18 10:05:38,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7736 to 2982. [2022-01-18 10:05:38,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 2980 states have (on average 1.9875838926174496) internal successors, (5923), 2981 states have internal predecessors, (5923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:05:38,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 5923 transitions. [2022-01-18 10:05:38,260 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 5923 transitions. Word has length 106 [2022-01-18 10:05:38,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:05:38,260 INFO L470 AbstractCegarLoop]: Abstraction has 2982 states and 5923 transitions. [2022-01-18 10:05:38,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:05:38,260 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 5923 transitions. [2022-01-18 10:05:38,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-18 10:05:38,262 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:05:38,262 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2022-01-18 10:05:38,278 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 10:05:38,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:05:38,462 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:05:38,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:05:38,463 INFO L85 PathProgramCache]: Analyzing trace with hash 432684052, now seen corresponding path program 16 times [2022-01-18 10:05:38,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:05:38,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118247003] [2022-01-18 10:05:38,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:05:38,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:05:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:05:39,381 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:05:39,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:05:39,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118247003] [2022-01-18 10:05:39,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118247003] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 10:05:39,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132489034] [2022-01-18 10:05:39,381 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 10:05:39,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:05:39,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 10:05:39,382 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 10:05:39,383 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 10:05:39,502 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 10:05:39,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 10:05:39,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 10:05:39,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 10:05:39,709 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 10:05:39,710 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 10:05:39,914 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 11 treesize of output 7 [2022-01-18 10:05:40,062 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 10:05:40,873 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:05:41,517 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:05:41,701 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:05:41,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 10:06:06,015 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1426 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#tid~0#1.base| v_ArrVal_1426) |c_~#pqb~0.base|) |c_~#pqb~0.offset|) 1))) is different from false [2022-01-18 10:06:06,081 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:06:06,081 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 20 treesize of output 21 [2022-01-18 10:06:06,107 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:06:06,107 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 34 treesize of output 37 [2022-01-18 10:06:06,116 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 11 treesize of output 9 [2022-01-18 10:06:06,626 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 10:06:06,626 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 13 treesize of output 12 [2022-01-18 10:06:06,637 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:06:06,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132489034] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 10:06:06,637 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 10:06:06,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 22] total 64 [2022-01-18 10:06:06,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850602879] [2022-01-18 10:06:06,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 10:06:06,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-18 10:06:06,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:06:06,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-18 10:06:06,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=3495, Unknown=6, NotChecked=122, Total=4032 [2022-01-18 10:06:06,639 INFO L87 Difference]: Start difference. First operand 2982 states and 5923 transitions. Second operand has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:06:19,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:06:19,682 INFO L93 Difference]: Finished difference Result 8245 states and 16400 transitions. [2022-01-18 10:06:19,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-18 10:06:19,682 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 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 106 [2022-01-18 10:06:19,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:06:19,692 INFO L225 Difference]: With dead ends: 8245 [2022-01-18 10:06:19,692 INFO L226 Difference]: Without dead ends: 8245 [2022-01-18 10:06:19,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 185 SyntacticMatches, 10 SemanticMatches, 123 ConstructedPredicates, 1 IntricatePredicates, 2 DeprecatedPredicates, 5013 ImplicationChecksByTransitivity, 34.9s TimeCoverageRelationStatistics Valid=2066, Invalid=13184, Unknown=6, NotChecked=244, Total=15500 [2022-01-18 10:06:19,694 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 2219 mSDsluCounter, 13255 mSDsCounter, 0 mSdLazyCounter, 2231 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2219 SdHoareTripleChecker+Valid, 13783 SdHoareTripleChecker+Invalid, 4342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 2231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2074 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-01-18 10:06:19,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2219 Valid, 13783 Invalid, 4342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 2231 Invalid, 0 Unknown, 2074 Unchecked, 3.4s Time] [2022-01-18 10:06:19,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8245 states. [2022-01-18 10:06:19,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8245 to 3173. [2022-01-18 10:06:19,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3173 states, 3171 states have (on average 1.9820245979186377) internal successors, (6285), 3172 states have internal predecessors, (6285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:06:19,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3173 states to 3173 states and 6285 transitions. [2022-01-18 10:06:19,749 INFO L78 Accepts]: Start accepts. Automaton has 3173 states and 6285 transitions. Word has length 106 [2022-01-18 10:06:19,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:06:19,749 INFO L470 AbstractCegarLoop]: Abstraction has 3173 states and 6285 transitions. [2022-01-18 10:06:19,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:06:19,750 INFO L276 IsEmpty]: Start isEmpty. Operand 3173 states and 6285 transitions. [2022-01-18 10:06:19,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-18 10:06:19,752 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:06:19,752 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2022-01-18 10:06:19,775 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 10:06:19,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:06:19,967 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:06:19,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:06:19,968 INFO L85 PathProgramCache]: Analyzing trace with hash 849782298, now seen corresponding path program 17 times [2022-01-18 10:06:19,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:06:19,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756390426] [2022-01-18 10:06:19,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:06:19,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:06:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:06:21,312 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:06:21,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:06:21,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756390426] [2022-01-18 10:06:21,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756390426] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 10:06:21,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111801160] [2022-01-18 10:06:21,312 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 10:06:21,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:06:21,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 10:06:21,313 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 10:06:21,314 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 10:06:21,429 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 10:06:21,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 10:06:21,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-18 10:06:21,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 10:06:21,824 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 10:06:21,824 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 10:06:22,186 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 11 treesize of output 7 [2022-01-18 10:06:22,408 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 10:06:23,686 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:06:24,715 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:06:24,872 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 10:06:24,968 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:06:24,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 10:06:45,707 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1477 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#tid~0#1.base| v_ArrVal_1477) |c_~#pqb~0.base|) |c_~#pqb~0.offset|) 1))) is different from false [2022-01-18 10:06:45,764 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:06:45,765 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 20 treesize of output 21 [2022-01-18 10:06:45,790 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:06:45,791 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 34 treesize of output 37 [2022-01-18 10:06:45,798 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 11 treesize of output 9 [2022-01-18 10:06:46,302 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 10:06:46,302 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 13 treesize of output 12 [2022-01-18 10:06:46,313 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:06:46,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111801160] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 10:06:46,313 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 10:06:46,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 22] total 64 [2022-01-18 10:06:46,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056153831] [2022-01-18 10:06:46,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 10:06:46,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-18 10:06:46,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:06:46,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-18 10:06:46,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=368, Invalid=3536, Unknown=6, NotChecked=122, Total=4032 [2022-01-18 10:06:46,314 INFO L87 Difference]: Start difference. First operand 3173 states and 6285 transitions. Second operand has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:07:04,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:07:04,051 INFO L93 Difference]: Finished difference Result 8868 states and 17681 transitions. [2022-01-18 10:07:04,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-01-18 10:07:04,051 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 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 106 [2022-01-18 10:07:04,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:07:04,061 INFO L225 Difference]: With dead ends: 8868 [2022-01-18 10:07:04,061 INFO L226 Difference]: Without dead ends: 8868 [2022-01-18 10:07:04,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 185 SyntacticMatches, 27 SemanticMatches, 149 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7645 ImplicationChecksByTransitivity, 36.7s TimeCoverageRelationStatistics Valid=4005, Invalid=18343, Unknown=6, NotChecked=296, Total=22650 [2022-01-18 10:07:04,062 INFO L933 BasicCegarLoop]: 546 mSDtfsCounter, 3977 mSDsluCounter, 7883 mSDsCounter, 0 mSdLazyCounter, 2197 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3977 SdHoareTripleChecker+Valid, 8429 SdHoareTripleChecker+Invalid, 4143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 2197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1798 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-01-18 10:07:04,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3977 Valid, 8429 Invalid, 4143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 2197 Invalid, 0 Unknown, 1798 Unchecked, 3.7s Time] [2022-01-18 10:07:04,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8868 states. [2022-01-18 10:07:04,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8868 to 3249. [2022-01-18 10:07:04,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3249 states, 3247 states have (on average 1.9824453341546042) internal successors, (6437), 3248 states have internal predecessors, (6437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:07:04,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3249 states to 3249 states and 6437 transitions. [2022-01-18 10:07:04,104 INFO L78 Accepts]: Start accepts. Automaton has 3249 states and 6437 transitions. Word has length 106 [2022-01-18 10:07:04,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:07:04,104 INFO L470 AbstractCegarLoop]: Abstraction has 3249 states and 6437 transitions. [2022-01-18 10:07:04,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:07:04,104 INFO L276 IsEmpty]: Start isEmpty. Operand 3249 states and 6437 transitions. [2022-01-18 10:07:04,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-18 10:07:04,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:07:04,106 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2022-01-18 10:07:04,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-01-18 10:07:04,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:07:04,307 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:07:04,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:07:04,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1001582042, now seen corresponding path program 18 times [2022-01-18 10:07:04,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:07:04,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872473893] [2022-01-18 10:07:04,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:07:04,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:07:04,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:07:05,679 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:07:05,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:07:05,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872473893] [2022-01-18 10:07:05,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872473893] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 10:07:05,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1377132189] [2022-01-18 10:07:05,680 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 10:07:05,680 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:07:05,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 10:07:05,681 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 10:07:05,682 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 10:07:05,800 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 10:07:05,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 10:07:05,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-18 10:07:05,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 10:07:06,136 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 10:07:06,137 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 10:07:06,536 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 11 treesize of output 7 [2022-01-18 10:07:06,840 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 10:07:08,240 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:07:09,278 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:07:09,442 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 10:07:09,545 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:07:09,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 10:07:25,375 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1528 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#tid~0#1.base| v_ArrVal_1528) |c_~#pqb~0.base|) |c_~#pqb~0.offset|) 1))) is different from false [2022-01-18 10:07:25,425 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:07:25,425 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 20 treesize of output 21 [2022-01-18 10:07:25,442 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:07:25,442 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 34 treesize of output 37 [2022-01-18 10:07:25,447 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 11 treesize of output 9 [2022-01-18 10:07:25,972 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 10:07:25,972 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 13 treesize of output 12 [2022-01-18 10:07:25,983 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:07:25,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1377132189] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 10:07:25,983 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 10:07:25,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 22] total 64 [2022-01-18 10:07:25,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879907515] [2022-01-18 10:07:25,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 10:07:25,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-18 10:07:25,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:07:25,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-18 10:07:25,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=340, Invalid=3565, Unknown=5, NotChecked=122, Total=4032 [2022-01-18 10:07:25,985 INFO L87 Difference]: Start difference. First operand 3249 states and 6437 transitions. Second operand has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:08:37,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:08:37,041 INFO L93 Difference]: Finished difference Result 13236 states and 26466 transitions. [2022-01-18 10:08:37,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-01-18 10:08:37,042 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 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 106 [2022-01-18 10:08:37,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:08:37,056 INFO L225 Difference]: With dead ends: 13236 [2022-01-18 10:08:37,056 INFO L226 Difference]: Without dead ends: 13236 [2022-01-18 10:08:37,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 192 SyntacticMatches, 47 SemanticMatches, 171 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 12466 ImplicationChecksByTransitivity, 85.0s TimeCoverageRelationStatistics Valid=4769, Invalid=24624, Unknown=23, NotChecked=340, Total=29756 [2022-01-18 10:08:37,057 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 5956 mSDsluCounter, 10095 mSDsCounter, 0 mSdLazyCounter, 2122 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5956 SdHoareTripleChecker+Valid, 10500 SdHoareTripleChecker+Invalid, 5060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 2122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2753 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-01-18 10:08:37,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5956 Valid, 10500 Invalid, 5060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 2122 Invalid, 0 Unknown, 2753 Unchecked, 3.7s Time] [2022-01-18 10:08:37,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13236 states. [2022-01-18 10:08:37,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13236 to 3338. [2022-01-18 10:08:37,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3338 states, 3336 states have (on average 1.980515587529976) internal successors, (6607), 3337 states have internal predecessors, (6607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:08:37,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3338 states to 3338 states and 6607 transitions. [2022-01-18 10:08:37,113 INFO L78 Accepts]: Start accepts. Automaton has 3338 states and 6607 transitions. Word has length 106 [2022-01-18 10:08:37,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:08:37,113 INFO L470 AbstractCegarLoop]: Abstraction has 3338 states and 6607 transitions. [2022-01-18 10:08:37,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:08:37,114 INFO L276 IsEmpty]: Start isEmpty. Operand 3338 states and 6607 transitions. [2022-01-18 10:08:37,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-18 10:08:37,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:08:37,116 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2022-01-18 10:08:37,132 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 10:08:37,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:08:37,317 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:08:37,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:08:37,317 INFO L85 PathProgramCache]: Analyzing trace with hash -289912932, now seen corresponding path program 19 times [2022-01-18 10:08:37,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:08:37,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365454694] [2022-01-18 10:08:37,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:08:37,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:08:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:08:39,612 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:08:39,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:08:39,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365454694] [2022-01-18 10:08:39,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365454694] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 10:08:39,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381401723] [2022-01-18 10:08:39,612 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 10:08:39,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:08:39,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 10:08:39,616 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 10:08:39,622 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 10:08:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:08:39,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-18 10:08:39,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 10:08:40,282 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 10:08:40,282 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 10:08:40,881 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 11 treesize of output 7 [2022-01-18 10:08:41,253 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 10:08:43,326 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:08:45,029 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:08:45,306 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 10:08:45,482 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:08:45,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 10:09:01,750 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1579 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#tid~0#1.base| v_ArrVal_1579) |c_~#pqb~0.base|) |c_~#pqb~0.offset|) 1))) is different from false [2022-01-18 10:09:01,825 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:09:01,825 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 20 treesize of output 21 [2022-01-18 10:09:01,855 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:09:01,855 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 34 treesize of output 37 [2022-01-18 10:09:01,863 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 11 treesize of output 9 [2022-01-18 10:09:02,715 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 10:09:02,716 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 13 treesize of output 12 [2022-01-18 10:09:02,732 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:09:02,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381401723] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 10:09:02,733 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 10:09:02,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 22] total 64 [2022-01-18 10:09:02,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364241714] [2022-01-18 10:09:02,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 10:09:02,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-18 10:09:02,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:09:02,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-18 10:09:02,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=3568, Unknown=6, NotChecked=122, Total=4032 [2022-01-18 10:09:02,735 INFO L87 Difference]: Start difference. First operand 3338 states and 6607 transitions. Second operand has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:09:47,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:09:47,169 INFO L93 Difference]: Finished difference Result 7159 states and 14231 transitions. [2022-01-18 10:09:47,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-18 10:09:47,170 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 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 106 [2022-01-18 10:09:47,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:09:47,179 INFO L225 Difference]: With dead ends: 7159 [2022-01-18 10:09:47,179 INFO L226 Difference]: Without dead ends: 7159 [2022-01-18 10:09:47,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 192 SyntacticMatches, 29 SemanticMatches, 147 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7582 ImplicationChecksByTransitivity, 61.1s TimeCoverageRelationStatistics Valid=3646, Invalid=18100, Unknown=14, NotChecked=292, Total=22052 [2022-01-18 10:09:47,181 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 3494 mSDsluCounter, 8307 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3494 SdHoareTripleChecker+Valid, 8819 SdHoareTripleChecker+Invalid, 3937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2536 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-01-18 10:09:47,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3494 Valid, 8819 Invalid, 3937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1289 Invalid, 0 Unknown, 2536 Unchecked, 3.5s Time] [2022-01-18 10:09:47,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7159 states. [2022-01-18 10:09:47,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7159 to 3512. [2022-01-18 10:09:47,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3512 states, 3510 states have (on average 1.9817663817663818) internal successors, (6956), 3511 states have internal predecessors, (6956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:09:47,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3512 states to 3512 states and 6956 transitions. [2022-01-18 10:09:47,248 INFO L78 Accepts]: Start accepts. Automaton has 3512 states and 6956 transitions. Word has length 106 [2022-01-18 10:09:47,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:09:47,249 INFO L470 AbstractCegarLoop]: Abstraction has 3512 states and 6956 transitions. [2022-01-18 10:09:47,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.390625) internal successors, (281), 64 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:09:47,249 INFO L276 IsEmpty]: Start isEmpty. Operand 3512 states and 6956 transitions. [2022-01-18 10:09:47,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-18 10:09:47,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:09:47,252 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:09:47,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-18 10:09:47,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:09:47,463 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:09:47,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:09:47,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1150805599, now seen corresponding path program 1 times [2022-01-18 10:09:47,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:09:47,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432052973] [2022-01-18 10:09:47,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:09:47,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:09:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:09:48,306 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:09:48,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:09:48,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432052973] [2022-01-18 10:09:48,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432052973] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 10:09:48,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688126745] [2022-01-18 10:09:48,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:09:48,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:09:48,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 10:09:48,308 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 10:09:48,310 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 10:09:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:09:48,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 34 conjunts are in the unsatisfiable core [2022-01-18 10:09:48,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 10:09:50,522 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:09:51,498 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 24 treesize of output 12 [2022-01-18 10:09:51,768 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:09:51,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 10:09:53,102 INFO L353 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2022-01-18 10:09:53,103 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 44 treesize of output 32 [2022-01-18 10:09:53,283 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:09:53,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688126745] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 10:09:53,283 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 10:09:53,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 36 [2022-01-18 10:09:53,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163457430] [2022-01-18 10:09:53,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 10:09:53,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-01-18 10:09:53,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:09:53,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-01-18 10:09:53,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1110, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 10:09:53,284 INFO L87 Difference]: Start difference. First operand 3512 states and 6956 transitions. Second operand has 36 states, 36 states have (on average 6.805555555555555) internal successors, (245), 36 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:09:59,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:09:59,449 INFO L93 Difference]: Finished difference Result 5738 states and 11420 transitions. [2022-01-18 10:09:59,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 10:09:59,450 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 6.805555555555555) internal successors, (245), 36 states have internal predecessors, (245), 0 states have call successors, (0), 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 116 [2022-01-18 10:09:59,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:09:59,455 INFO L225 Difference]: With dead ends: 5738 [2022-01-18 10:09:59,455 INFO L226 Difference]: Without dead ends: 4623 [2022-01-18 10:09:59,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 240 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 847 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=690, Invalid=2850, Unknown=0, NotChecked=0, Total=3540 [2022-01-18 10:09:59,456 INFO L933 BasicCegarLoop]: 435 mSDtfsCounter, 2050 mSDsluCounter, 7177 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 7611 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 228 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 10:09:59,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2050 Valid, 7611 Invalid, 1273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1006 Invalid, 0 Unknown, 228 Unchecked, 2.6s Time] [2022-01-18 10:09:59,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4623 states. [2022-01-18 10:09:59,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4623 to 3382. [2022-01-18 10:09:59,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3382 states, 3380 states have (on average 1.96301775147929) internal successors, (6635), 3381 states have internal predecessors, (6635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:09:59,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3382 states to 3382 states and 6635 transitions. [2022-01-18 10:09:59,491 INFO L78 Accepts]: Start accepts. Automaton has 3382 states and 6635 transitions. Word has length 116 [2022-01-18 10:09:59,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:09:59,491 INFO L470 AbstractCegarLoop]: Abstraction has 3382 states and 6635 transitions. [2022-01-18 10:09:59,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 6.805555555555555) internal successors, (245), 36 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:09:59,491 INFO L276 IsEmpty]: Start isEmpty. Operand 3382 states and 6635 transitions. [2022-01-18 10:09:59,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-18 10:09:59,493 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:09:59,493 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-18 10:09:59,509 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 10:09:59,694 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,SelfDestructingSolverStorable65 [2022-01-18 10:09:59,694 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:09:59,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:09:59,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1299269377, now seen corresponding path program 20 times [2022-01-18 10:09:59,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:09:59,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779776419] [2022-01-18 10:09:59,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:09:59,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:09:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:10:02,117 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:10:02,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:10:02,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779776419] [2022-01-18 10:10:02,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779776419] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 10:10:02,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477633321] [2022-01-18 10:10:02,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 10:10:02,117 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:10:02,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 10:10:02,118 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 10:10:02,119 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 10:10:02,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 10:10:02,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 10:10:02,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-18 10:10:02,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 10:10:02,805 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 10:10:02,805 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 10:10:03,404 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 11 treesize of output 7 [2022-01-18 10:10:03,788 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 10:10:05,974 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:10:07,719 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:10:08,203 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 10:10:08,381 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:10:08,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 10:10:24,965 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1676 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#tid~0#1.base| v_ArrVal_1676) |c_~#pqb~0.base|) |c_~#pqb~0.offset|) 1))) is different from false [2022-01-18 10:10:25,042 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:10:25,043 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 20 treesize of output 21 [2022-01-18 10:10:25,075 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:10:25,075 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 34 treesize of output 37 [2022-01-18 10:10:25,083 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 11 treesize of output 9 [2022-01-18 10:10:25,982 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 10:10:25,983 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 13 treesize of output 12 [2022-01-18 10:10:25,996 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:10:25,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477633321] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 10:10:25,996 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 10:10:25,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 22] total 64 [2022-01-18 10:10:25,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558423752] [2022-01-18 10:10:25,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 10:10:25,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-18 10:10:25,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:10:25,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-18 10:10:25,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=3563, Unknown=5, NotChecked=122, Total=4032 [2022-01-18 10:10:25,998 INFO L87 Difference]: Start difference. First operand 3382 states and 6635 transitions. Second operand has 64 states, 64 states have (on average 4.734375) internal successors, (303), 64 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:10:45,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:10:45,283 INFO L93 Difference]: Finished difference Result 8257 states and 16359 transitions. [2022-01-18 10:10:45,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-01-18 10:10:45,284 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.734375) internal successors, (303), 64 states have internal predecessors, (303), 0 states have call successors, (0), 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 117 [2022-01-18 10:10:45,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:10:45,292 INFO L225 Difference]: With dead ends: 8257 [2022-01-18 10:10:45,292 INFO L226 Difference]: Without dead ends: 8187 [2022-01-18 10:10:45,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 206 SyntacticMatches, 7 SemanticMatches, 120 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4361 ImplicationChecksByTransitivity, 32.8s TimeCoverageRelationStatistics Valid=1685, Invalid=12834, Unknown=5, NotChecked=238, Total=14762 [2022-01-18 10:10:45,293 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 1839 mSDsluCounter, 12116 mSDsCounter, 0 mSdLazyCounter, 2622 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1839 SdHoareTripleChecker+Valid, 12540 SdHoareTripleChecker+Invalid, 4801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2144 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-01-18 10:10:45,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1839 Valid, 12540 Invalid, 4801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2622 Invalid, 0 Unknown, 2144 Unchecked, 7.1s Time] [2022-01-18 10:10:45,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8187 states. [2022-01-18 10:10:45,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8187 to 3103. [2022-01-18 10:10:45,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3103 states, 3101 states have (on average 1.9709771041599484) internal successors, (6112), 3102 states have internal predecessors, (6112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:10:45,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3103 states to 3103 states and 6112 transitions. [2022-01-18 10:10:45,328 INFO L78 Accepts]: Start accepts. Automaton has 3103 states and 6112 transitions. Word has length 117 [2022-01-18 10:10:45,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:10:45,328 INFO L470 AbstractCegarLoop]: Abstraction has 3103 states and 6112 transitions. [2022-01-18 10:10:45,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.734375) internal successors, (303), 64 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:10:45,328 INFO L276 IsEmpty]: Start isEmpty. Operand 3103 states and 6112 transitions. [2022-01-18 10:10:45,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-18 10:10:45,330 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:10:45,330 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-18 10:10:45,346 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 10:10:45,530 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,SelfDestructingSolverStorable66 [2022-01-18 10:10:45,531 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:10:45,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:10:45,531 INFO L85 PathProgramCache]: Analyzing trace with hash 2097498146, now seen corresponding path program 1 times [2022-01-18 10:10:45,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:10:45,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282333104] [2022-01-18 10:10:45,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:10:45,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:10:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:10:48,056 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:10:48,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:10:48,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282333104] [2022-01-18 10:10:48,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282333104] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 10:10:48,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314693983] [2022-01-18 10:10:48,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:10:48,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:10:48,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 10:10:48,058 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 10:10:48,059 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 10:10:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:10:48,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-18 10:10:48,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 10:10:48,726 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 10:10:48,726 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 10:10:49,355 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 11 treesize of output 7 [2022-01-18 10:10:49,737 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 10:10:51,932 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:10:53,704 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:10:54,084 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 10:10:54,301 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:10:54,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 10:11:08,366 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1729 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#tid~0#1.base| v_ArrVal_1729) |c_~#pqb~0.base|) |c_~#pqb~0.offset|) 1))) is different from false [2022-01-18 10:11:08,441 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:11:08,442 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 20 treesize of output 21 [2022-01-18 10:11:08,472 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:11:08,472 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 34 treesize of output 37 [2022-01-18 10:11:08,481 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 11 treesize of output 9 [2022-01-18 10:11:09,330 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 10:11:09,331 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 13 treesize of output 12 [2022-01-18 10:11:09,343 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:11:09,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314693983] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 10:11:09,344 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 10:11:09,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 22] total 64 [2022-01-18 10:11:09,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349687228] [2022-01-18 10:11:09,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 10:11:09,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-18 10:11:09,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:11:09,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-18 10:11:09,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=3569, Unknown=5, NotChecked=122, Total=4032 [2022-01-18 10:11:09,345 INFO L87 Difference]: Start difference. First operand 3103 states and 6112 transitions. Second operand has 64 states, 64 states have (on average 4.734375) internal successors, (303), 64 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:11:35,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:11:35,275 INFO L93 Difference]: Finished difference Result 9140 states and 18164 transitions. [2022-01-18 10:11:35,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-18 10:11:35,275 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.734375) internal successors, (303), 64 states have internal predecessors, (303), 0 states have call successors, (0), 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 117 [2022-01-18 10:11:35,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:11:35,285 INFO L225 Difference]: With dead ends: 9140 [2022-01-18 10:11:35,286 INFO L226 Difference]: Without dead ends: 9035 [2022-01-18 10:11:35,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 222 SyntacticMatches, 40 SemanticMatches, 135 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6240 ImplicationChecksByTransitivity, 39.6s TimeCoverageRelationStatistics Valid=3251, Invalid=15108, Unknown=5, NotChecked=268, Total=18632 [2022-01-18 10:11:35,288 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 3532 mSDsluCounter, 8495 mSDsCounter, 0 mSdLazyCounter, 1623 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3532 SdHoareTripleChecker+Valid, 8901 SdHoareTripleChecker+Invalid, 3656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1873 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-01-18 10:11:35,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3532 Valid, 8901 Invalid, 3656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1623 Invalid, 0 Unknown, 1873 Unchecked, 4.6s Time] [2022-01-18 10:11:35,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9035 states. [2022-01-18 10:11:35,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9035 to 2870. [2022-01-18 10:11:35,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2870 states, 2868 states have (on average 1.9735006973500697) internal successors, (5660), 2869 states have internal predecessors, (5660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:11:35,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2870 states to 2870 states and 5660 transitions. [2022-01-18 10:11:35,357 INFO L78 Accepts]: Start accepts. Automaton has 2870 states and 5660 transitions. Word has length 117 [2022-01-18 10:11:35,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:11:35,357 INFO L470 AbstractCegarLoop]: Abstraction has 2870 states and 5660 transitions. [2022-01-18 10:11:35,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.734375) internal successors, (303), 64 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:11:35,357 INFO L276 IsEmpty]: Start isEmpty. Operand 2870 states and 5660 transitions. [2022-01-18 10:11:35,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-18 10:11:35,359 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:11:35,359 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2022-01-18 10:11:35,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-18 10:11:35,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:11:35,560 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:11:35,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:11:35,560 INFO L85 PathProgramCache]: Analyzing trace with hash -87180448, now seen corresponding path program 21 times [2022-01-18 10:11:35,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:11:35,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224864662] [2022-01-18 10:11:35,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:11:35,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:11:35,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:11:37,994 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:11:37,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:11:37,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224864662] [2022-01-18 10:11:37,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224864662] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 10:11:37,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831500801] [2022-01-18 10:11:37,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 10:11:37,995 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:11:37,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 10:11:37,996 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 10:11:37,997 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 10:11:38,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 10:11:38,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 10:11:38,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 56 conjunts are in the unsatisfiable core [2022-01-18 10:11:38,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 10:11:38,677 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 10:11:38,678 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 10:11:39,319 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 11 treesize of output 7 [2022-01-18 10:11:39,715 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 10:11:41,943 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:11:43,722 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:11:44,302 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 10:11:44,486 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:11:44,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 10:11:55,278 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1780 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#tid~0#1.base| v_ArrVal_1780) |c_~#pqb~0.base|) |c_~#pqb~0.offset|) 1))) is different from false [2022-01-18 10:11:55,355 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:11:55,356 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 20 treesize of output 21 [2022-01-18 10:11:55,387 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:11:55,388 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 34 treesize of output 37 [2022-01-18 10:11:55,396 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 11 treesize of output 9 [2022-01-18 10:11:56,349 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 10:11:56,350 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 13 treesize of output 12 [2022-01-18 10:11:56,364 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:11:56,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831500801] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 10:11:56,364 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 10:11:56,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 22] total 64 [2022-01-18 10:11:56,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236158263] [2022-01-18 10:11:56,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 10:11:56,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-18 10:11:56,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:11:56,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-18 10:11:56,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=3570, Unknown=4, NotChecked=122, Total=4032 [2022-01-18 10:11:56,365 INFO L87 Difference]: Start difference. First operand 2870 states and 5660 transitions. Second operand has 64 states, 64 states have (on average 4.828125) internal successors, (309), 64 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:12:04,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:12:04,626 INFO L93 Difference]: Finished difference Result 5171 states and 10171 transitions. [2022-01-18 10:12:04,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 10:12:04,626 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.828125) internal successors, (309), 64 states have internal predecessors, (309), 0 states have call successors, (0), 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 120 [2022-01-18 10:12:04,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:12:04,634 INFO L225 Difference]: With dead ends: 5171 [2022-01-18 10:12:04,634 INFO L226 Difference]: Without dead ends: 5101 [2022-01-18 10:12:04,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 209 SyntacticMatches, 9 SemanticMatches, 89 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2476 ImplicationChecksByTransitivity, 21.1s TimeCoverageRelationStatistics Valid=937, Invalid=7073, Unknown=4, NotChecked=176, Total=8190 [2022-01-18 10:12:04,635 INFO L933 BasicCegarLoop]: 344 mSDtfsCounter, 1468 mSDsluCounter, 6938 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 7280 SdHoareTripleChecker+Invalid, 1981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1040 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-18 10:12:04,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1468 Valid, 7280 Invalid, 1981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 898 Invalid, 0 Unknown, 1040 Unchecked, 2.4s Time] [2022-01-18 10:12:04,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5101 states. [2022-01-18 10:12:04,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5101 to 3113. [2022-01-18 10:12:04,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3113 states, 3111 states have (on average 1.9723561555769848) internal successors, (6136), 3112 states have internal predecessors, (6136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:12:04,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3113 states to 3113 states and 6136 transitions. [2022-01-18 10:12:04,694 INFO L78 Accepts]: Start accepts. Automaton has 3113 states and 6136 transitions. Word has length 120 [2022-01-18 10:12:04,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:12:04,694 INFO L470 AbstractCegarLoop]: Abstraction has 3113 states and 6136 transitions. [2022-01-18 10:12:04,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.828125) internal successors, (309), 64 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:12:04,694 INFO L276 IsEmpty]: Start isEmpty. Operand 3113 states and 6136 transitions. [2022-01-18 10:12:04,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-18 10:12:04,696 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:12:04,696 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2022-01-18 10:12:04,714 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 10:12:04,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:12:04,897 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:12:04,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:12:04,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1133805392, now seen corresponding path program 22 times [2022-01-18 10:12:04,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:12:04,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678969288] [2022-01-18 10:12:04,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:12:04,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:12:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:12:07,245 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:12:07,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:12:07,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678969288] [2022-01-18 10:12:07,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678969288] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 10:12:07,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566017407] [2022-01-18 10:12:07,246 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 10:12:07,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:12:07,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 10:12:07,247 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 10:12:07,247 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 10:12:07,388 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 10:12:07,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 10:12:07,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 10:12:07,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 10:12:07,930 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 10:12:07,930 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 10:12:08,516 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 11 treesize of output 7 [2022-01-18 10:12:08,901 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 10:12:10,994 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2022-01-18 10:12:12,731 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 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 28 treesize of output 16 [2022-01-18 10:12:13,519 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:12:13,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 10:12:27,620 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1831 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#tid~0#1.base| v_ArrVal_1831) |c_~#pqb~0.base|) |c_~#pqb~0.offset|) 1))) is different from false [2022-01-18 10:12:27,721 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:12:27,721 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 20 treesize of output 21 [2022-01-18 10:12:27,761 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 10:12:27,761 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 34 treesize of output 37 [2022-01-18 10:12:27,772 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 11 treesize of output 9 [2022-01-18 10:12:28,711 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 10:12:28,712 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 13 treesize of output 12 [2022-01-18 10:12:28,726 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 17 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:12:28,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566017407] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 10:12:28,727 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 10:12:28,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 22, 22] total 64 [2022-01-18 10:12:28,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583369501] [2022-01-18 10:12:28,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 10:12:28,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-01-18 10:12:28,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 10:12:28,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-01-18 10:12:28,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=3564, Unknown=5, NotChecked=122, Total=4032 [2022-01-18 10:12:28,729 INFO L87 Difference]: Start difference. First operand 3113 states and 6136 transitions. Second operand has 64 states, 64 states have (on average 4.828125) internal successors, (309), 64 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:13:09,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 10:13:09,838 INFO L93 Difference]: Finished difference Result 10825 states and 21495 transitions. [2022-01-18 10:13:09,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-01-18 10:13:09,838 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 4.828125) internal successors, (309), 64 states have internal predecessors, (309), 0 states have call successors, (0), 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 120 [2022-01-18 10:13:09,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 10:13:09,850 INFO L225 Difference]: With dead ends: 10825 [2022-01-18 10:13:09,850 INFO L226 Difference]: Without dead ends: 10790 [2022-01-18 10:13:09,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 218 SyntacticMatches, 35 SemanticMatches, 133 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7171 ImplicationChecksByTransitivity, 54.0s TimeCoverageRelationStatistics Valid=1854, Invalid=15964, Unknown=8, NotChecked=264, Total=18090 [2022-01-18 10:13:09,852 INFO L933 BasicCegarLoop]: 510 mSDtfsCounter, 1639 mSDsluCounter, 14267 mSDsCounter, 0 mSdLazyCounter, 2008 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1639 SdHoareTripleChecker+Valid, 14768 SdHoareTripleChecker+Invalid, 4875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 2008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2853 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-01-18 10:13:09,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1639 Valid, 14768 Invalid, 4875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 2008 Invalid, 0 Unknown, 2853 Unchecked, 5.2s Time] [2022-01-18 10:13:09,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10790 states. [2022-01-18 10:13:09,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10790 to 3247. [2022-01-18 10:13:09,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3247 states, 3245 states have (on average 1.9679506933744222) internal successors, (6386), 3246 states have internal predecessors, (6386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:13:09,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3247 states to 3247 states and 6386 transitions. [2022-01-18 10:13:09,900 INFO L78 Accepts]: Start accepts. Automaton has 3247 states and 6386 transitions. Word has length 120 [2022-01-18 10:13:09,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 10:13:09,901 INFO L470 AbstractCegarLoop]: Abstraction has 3247 states and 6386 transitions. [2022-01-18 10:13:09,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 4.828125) internal successors, (309), 64 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 10:13:09,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3247 states and 6386 transitions. [2022-01-18 10:13:09,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-18 10:13:09,903 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 10:13:09,903 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2022-01-18 10:13:09,919 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 10:13:10,103 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,SelfDestructingSolverStorable69 [2022-01-18 10:13:10,103 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-18 10:13:10,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 10:13:10,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1591036760, now seen corresponding path program 23 times [2022-01-18 10:13:10,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 10:13:10,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441758660] [2022-01-18 10:13:10,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 10:13:10,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 10:13:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 10:13:12,594 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 10:13:12,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 10:13:12,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441758660] [2022-01-18 10:13:12,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441758660] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 10:13:12,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521806733] [2022-01-18 10:13:12,595 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 10:13:12,595 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:13:12,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 10:13:12,596 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 10:13:12,597 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 10:13:12,725 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 10:13:12,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 10:13:12,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-18 10:13:12,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 10:13:13,266 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-18 10:13:13,266 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 10:13:13,872 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 11 treesize of output 7 [2022-01-18 10:13:14,247 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 Received shutdown request... [2022-01-18 10:13:16,100 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-01-18 10:13:16,100 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 10:13:16,110 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 10:13:16,116 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 10:13:16,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 10:13:16,301 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 121 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-8-1 term,while PolyPacSimplificationTermWalker was simplifying 8 xjuncts wrt. a ATOM-1 context. [2022-01-18 10:13:16,302 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2022-01-18 10:13:16,303 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2022-01-18 10:13:16,303 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2022-01-18 10:13:16,303 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2022-01-18 10:13:16,305 INFO L732 BasicCegarLoop]: Path program histogram: [23, 18, 17, 7, 1, 1, 1, 1, 1, 1] [2022-01-18 10:13:16,308 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 10:13:16,308 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 10:13:16,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 10:13:16 BasicIcfg [2022-01-18 10:13:16,309 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 10:13:16,309 INFO L158 Benchmark]: Toolchain (without parser) took 807018.13ms. Allocated memory was 388.0MB in the beginning and 1.1GB in the end (delta: 677.4MB). Free memory was 333.7MB in the beginning and 438.8MB in the end (delta: -105.1MB). Peak memory consumption was 573.9MB. Max. memory is 16.0GB. [2022-01-18 10:13:16,309 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 388.0MB. Free memory was 351.1MB in the beginning and 351.1MB in the end (delta: 57.9kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 10:13:16,309 INFO L158 Benchmark]: CACSL2BoogieTranslator took 377.43ms. Allocated memory is still 388.0MB. Free memory was 333.4MB in the beginning and 351.5MB in the end (delta: -18.1MB). Peak memory consumption was 17.4MB. Max. memory is 16.0GB. [2022-01-18 10:13:16,309 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.86ms. Allocated memory is still 388.0MB. Free memory was 351.5MB in the beginning and 349.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 10:13:16,309 INFO L158 Benchmark]: Boogie Preprocessor took 21.73ms. Allocated memory is still 388.0MB. Free memory was 349.4MB in the beginning and 347.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 10:13:16,310 INFO L158 Benchmark]: RCFGBuilder took 422.35ms. Allocated memory is still 388.0MB. Free memory was 347.3MB in the beginning and 331.6MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-18 10:13:16,310 INFO L158 Benchmark]: TraceAbstraction took 806157.80ms. Allocated memory was 388.0MB in the beginning and 1.1GB in the end (delta: 677.4MB). Free memory was 331.6MB in the beginning and 438.8MB in the end (delta: -107.2MB). Peak memory consumption was 573.3MB. Max. memory is 16.0GB. [2022-01-18 10:13:16,310 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 388.0MB. Free memory was 351.1MB in the beginning and 351.1MB in the end (delta: 57.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 377.43ms. Allocated memory is still 388.0MB. Free memory was 333.4MB in the beginning and 351.5MB in the end (delta: -18.1MB). Peak memory consumption was 17.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 34.86ms. Allocated memory is still 388.0MB. Free memory was 351.5MB in the beginning and 349.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 21.73ms. Allocated memory is still 388.0MB. Free memory was 349.4MB in the beginning and 347.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 422.35ms. Allocated memory is still 388.0MB. Free memory was 347.3MB in the beginning and 331.6MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 806157.80ms. Allocated memory was 388.0MB in the beginning and 1.1GB in the end (delta: 677.4MB). Free memory was 331.6MB in the beginning and 438.8MB in the end (delta: -107.2MB). Peak memory consumption was 573.3MB. 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: 19]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 121 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-8-1 term,while PolyPacSimplificationTermWalker was simplifying 8 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 748]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 121 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-8-1 term,while PolyPacSimplificationTermWalker was simplifying 8 xjuncts wrt. a ATOM-1 context. - TimeoutResultAtElement [Line: 19]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was analyzing trace of length 121 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-8-1 term,while PolyPacSimplificationTermWalker was simplifying 8 xjuncts wrt. a ATOM-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 190 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 806.0s, OverallIterations: 71, TraceHistogramMax: 3, PathProgramHistogramMax: 23, EmptinessCheckTime: 0.2s, AutomataDifference: 446.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 131688 SdHoareTripleChecker+Valid, 71.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 131688 mSDsluCounter, 366289 SdHoareTripleChecker+Invalid, 64.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 40627 IncrementalHoareTripleChecker+Unchecked, 338699 mSDsCounter, 4060 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 87805 IncrementalHoareTripleChecker+Invalid, 132492 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4060 mSolverCounterUnsat, 27772 mSDtfsCounter, 87805 mSolverCounterSat, 0.8s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10191 GetRequests, 4830 SyntacticMatches, 365 SemanticMatches, 4996 ConstructedPredicates, 22 IntricatePredicates, 6 DeprecatedPredicates, 167348 ImplicationChecksByTransitivity, 638.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9370occurred in iteration=19, InterpolantAutomatonStates: 3417, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 6.7s AutomataMinimizationTime, 70 MinimizatonAttempts, 500720 StatesRemovedByMinimization, 69 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 337.2s InterpolantComputationTime, 8719 NumberOfCodeBlocks, 8719 NumberOfCodeBlocksAsserted, 113 NumberOfCheckSat, 11052 ConstructedInterpolants, 1043 QuantifiedInterpolants, 121867 SizeOfPredicates, 582 NumberOfNonLiveVariables, 6074 ConjunctsInSsa, 1278 ConjunctsInUnsatCore, 117 InterpolantComputations, 47 PerfectInterpolantSequences, 263/1248 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