/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/fib_safe-6.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 17:20:32,619 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 17:20:32,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 17:20:32,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 17:20:32,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 17:20:32,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 17:20:32,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 17:20:32,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 17:20:32,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 17:20:32,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 17:20:32,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 17:20:32,718 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 17:20:32,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 17:20:32,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 17:20:32,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 17:20:32,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 17:20:32,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 17:20:32,723 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 17:20:32,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 17:20:32,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 17:20:32,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 17:20:32,744 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 17:20:32,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 17:20:32,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 17:20:32,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-15 17:20:32,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-15 17:20:32,749 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-15 17:20:32,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-15 17:20:32,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-15 17:20:32,750 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-15 17:20:32,751 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-15 17:20:32,751 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-15 17:20:32,752 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-15 17:20:32,752 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-15 17:20:32,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-15 17:20:32,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-15 17:20:32,753 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-15 17:20:32,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-15 17:20:32,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 17:20:32,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 17:20:32,754 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 17:20:32,756 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2022-03-15 17:20:32,779 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 17:20:32,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 17:20:32,780 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 17:20:32,780 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 17:20:32,780 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 17:20:32,780 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 17:20:32,780 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 17:20:32,781 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 17:20:32,781 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 17:20:32,781 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 17:20:32,781 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 17:20:32,781 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 17:20:32,781 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 17:20:32,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 17:20:32,782 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 17:20:32,782 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 17:20:32,782 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 17:20:32,782 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 17:20:32,782 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 17:20:32,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 17:20:32,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 17:20:32,782 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 17:20:32,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 17:20:32,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 17:20:32,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 17:20:32,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 17:20:32,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 17:20:32,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 17:20:32,784 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 17:20:32,784 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 17:20:32,784 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 17:20:32,784 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 17:20:32,784 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 17:20:32,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 17:20:32,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 17:20:33,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 17:20:33,001 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 17:20:33,002 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 17:20:33,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_safe-6.i [2022-03-15 17:20:33,049 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b1fa12fa/8a636de8998943bdaeaff45b93617101/FLAGccc9d0034 [2022-03-15 17:20:33,390 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 17:20:33,391 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-6.i [2022-03-15 17:20:33,404 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b1fa12fa/8a636de8998943bdaeaff45b93617101/FLAGccc9d0034 [2022-03-15 17:20:33,767 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b1fa12fa/8a636de8998943bdaeaff45b93617101 [2022-03-15 17:20:33,769 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 17:20:33,769 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 17:20:33,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 17:20:33,770 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 17:20:33,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 17:20:33,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 05:20:33" (1/1) ... [2022-03-15 17:20:33,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ca471d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:33, skipping insertion in model container [2022-03-15 17:20:33,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 05:20:33" (1/1) ... [2022-03-15 17:20:33,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 17:20:33,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 17:20:34,069 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-6.i[30813,30826] [2022-03-15 17:20:34,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 17:20:34,075 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 17:20:34,124 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_safe-6.i[30813,30826] [2022-03-15 17:20:34,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 17:20:34,153 INFO L208 MainTranslator]: Completed translation [2022-03-15 17:20:34,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:34 WrapperNode [2022-03-15 17:20:34,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 17:20:34,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 17:20:34,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 17:20:34,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 17:20:34,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:34" (1/1) ... [2022-03-15 17:20:34,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:34" (1/1) ... [2022-03-15 17:20:34,203 INFO L137 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-03-15 17:20:34,204 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 17:20:34,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 17:20:34,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 17:20:34,205 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 17:20:34,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:34" (1/1) ... [2022-03-15 17:20:34,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:34" (1/1) ... [2022-03-15 17:20:34,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:34" (1/1) ... [2022-03-15 17:20:34,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:34" (1/1) ... [2022-03-15 17:20:34,218 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:34" (1/1) ... [2022-03-15 17:20:34,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:34" (1/1) ... [2022-03-15 17:20:34,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:34" (1/1) ... [2022-03-15 17:20:34,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 17:20:34,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 17:20:34,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 17:20:34,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 17:20:34,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:34" (1/1) ... [2022-03-15 17:20:34,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 17:20:34,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:34,276 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) [2022-03-15 17:20:34,279 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 [2022-03-15 17:20:34,300 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-03-15 17:20:34,301 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-03-15 17:20:34,301 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-03-15 17:20:34,301 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-03-15 17:20:34,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 17:20:34,301 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-15 17:20:34,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 17:20:34,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 17:20:34,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 17:20:34,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 17:20:34,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-15 17:20:34,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 17:20:34,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 17:20:34,303 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 17:20:34,373 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 17:20:34,375 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 17:20:34,488 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 17:20:34,493 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 17:20:34,493 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-15 17:20:34,494 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 05:20:34 BoogieIcfgContainer [2022-03-15 17:20:34,494 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 17:20:34,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 17:20:34,496 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 17:20:34,498 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 17:20:34,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 05:20:33" (1/3) ... [2022-03-15 17:20:34,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216d216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 05:20:34, skipping insertion in model container [2022-03-15 17:20:34,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:34" (2/3) ... [2022-03-15 17:20:34,499 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216d216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 05:20:34, skipping insertion in model container [2022-03-15 17:20:34,499 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 05:20:34" (3/3) ... [2022-03-15 17:20:34,500 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_safe-6.i [2022-03-15 17:20:34,503 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 17:20:34,503 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 17:20:34,503 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 17:20:34,503 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 17:20:34,529 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,529 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,529 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,529 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,530 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,530 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,530 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,530 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,531 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,531 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,531 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,531 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,532 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,532 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,532 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,533 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,533 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,533 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,533 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,533 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,534 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,534 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,534 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,534 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,534 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,534 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,535 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,535 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,535 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,536 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,536 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,536 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,536 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,537 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,537 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,537 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,540 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,540 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,540 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,540 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,540 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,542 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,542 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,542 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,543 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,543 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,543 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-03-15 17:20:34,573 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 17:20:34,578 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, 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=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 17:20:34,578 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-15 17:20:34,587 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 17:20:34,594 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 96 transitions, 202 flow [2022-03-15 17:20:34,596 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 96 transitions, 202 flow [2022-03-15 17:20:34,597 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions, 202 flow [2022-03-15 17:20:34,632 INFO L129 PetriNetUnfolder]: 7/94 cut-off events. [2022-03-15 17:20:34,632 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-03-15 17:20:34,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 94 events. 7/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 73 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2022-03-15 17:20:34,637 INFO L116 LiptonReduction]: Number of co-enabled transitions 1870 [2022-03-15 17:20:37,416 INFO L131 LiptonReduction]: Checked pairs total: 1462 [2022-03-15 17:20:37,417 INFO L133 LiptonReduction]: Total number of compositions: 92 [2022-03-15 17:20:37,428 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 42 flow [2022-03-15 17:20:37,445 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 34 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:37,447 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 34 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:37,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-03-15 17:20:37,450 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:37,451 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-03-15 17:20:37,451 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:37,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:37,455 INFO L85 PathProgramCache]: Analyzing trace with hash -2083717598, now seen corresponding path program 1 times [2022-03-15 17:20:37,471 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:37,471 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514079106] [2022-03-15 17:20:37,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:37,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:37,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:37,594 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:37,594 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514079106] [2022-03-15 17:20:37,595 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514079106] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 17:20:37,595 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 17:20:37,595 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 17:20:37,596 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1120027835] [2022-03-15 17:20:37,596 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:37,598 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:37,604 INFO L252 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2022-03-15 17:20:37,604 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:37,606 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:37,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 17:20:37,607 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:37,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 17:20:37,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 17:20:37,621 INFO L87 Difference]: Start difference. First operand has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 34 states have internal predecessors, (95), 0 states have call successors, (0), 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 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:37,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:37,645 INFO L93 Difference]: Finished difference Result 44 states and 122 transitions. [2022-03-15 17:20:37,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 17:20:37,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2022-03-15 17:20:37,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:37,654 INFO L225 Difference]: With dead ends: 44 [2022-03-15 17:20:37,655 INFO L226 Difference]: Without dead ends: 44 [2022-03-15 17:20:37,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 17:20:37,659 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:37,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:37,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-03-15 17:20:37,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-03-15 17:20:37,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 2.8372093023255816) internal successors, (122), 43 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:37,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 122 transitions. [2022-03-15 17:20:37,689 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 122 transitions. Word has length 6 [2022-03-15 17:20:37,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:37,689 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 122 transitions. [2022-03-15 17:20:37,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:37,690 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 122 transitions. [2022-03-15 17:20:37,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-03-15 17:20:37,691 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:37,692 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:37,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 17:20:37,692 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:37,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:37,694 INFO L85 PathProgramCache]: Analyzing trace with hash -170735922, now seen corresponding path program 1 times [2022-03-15 17:20:37,695 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:37,698 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348153698] [2022-03-15 17:20:37,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:37,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:37,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:37,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:37,774 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:37,774 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348153698] [2022-03-15 17:20:37,774 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348153698] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:37,774 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857912891] [2022-03-15 17:20:37,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:37,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:37,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:37,776 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) [2022-03-15 17:20:37,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-15 17:20:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:37,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-15 17:20:37,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:37,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:37,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:37,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:37,903 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857912891] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:37,903 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:37,903 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-03-15 17:20:37,903 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1109622560] [2022-03-15 17:20:37,904 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:37,904 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:37,905 INFO L252 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2022-03-15 17:20:37,905 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:37,905 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:37,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 17:20:37,906 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:37,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 17:20:37,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-03-15 17:20:37,906 INFO L87 Difference]: Start difference. First operand 44 states and 122 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:37,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:37,944 INFO L93 Difference]: Finished difference Result 53 states and 149 transitions. [2022-03-15 17:20:37,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 17:20:37,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2022-03-15 17:20:37,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:37,945 INFO L225 Difference]: With dead ends: 53 [2022-03-15 17:20:37,945 INFO L226 Difference]: Without dead ends: 53 [2022-03-15 17:20:37,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-03-15 17:20:37,946 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:37,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:37,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-03-15 17:20:37,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-03-15 17:20:37,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 2.8653846153846154) internal successors, (149), 52 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:37,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 149 transitions. [2022-03-15 17:20:37,951 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 149 transitions. Word has length 7 [2022-03-15 17:20:37,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:37,951 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 149 transitions. [2022-03-15 17:20:37,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:37,952 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 149 transitions. [2022-03-15 17:20:37,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-03-15 17:20:37,952 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:37,952 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:37,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:38,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:38,164 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:38,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:38,164 INFO L85 PathProgramCache]: Analyzing trace with hash -997846110, now seen corresponding path program 2 times [2022-03-15 17:20:38,166 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:38,166 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991643639] [2022-03-15 17:20:38,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:38,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:38,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:38,233 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:38,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991643639] [2022-03-15 17:20:38,233 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991643639] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:38,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418461027] [2022-03-15 17:20:38,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:20:38,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:38,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:38,234 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) [2022-03-15 17:20:38,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-15 17:20:38,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 17:20:38,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:38,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-15 17:20:38,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:38,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:38,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:38,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:38,352 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418461027] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:38,352 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:38,352 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-03-15 17:20:38,352 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1394607666] [2022-03-15 17:20:38,352 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:38,353 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:38,354 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2022-03-15 17:20:38,354 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:38,354 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:38,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 17:20:38,355 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:38,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 17:20:38,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-03-15 17:20:38,355 INFO L87 Difference]: Start difference. First operand 53 states and 149 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:38,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:38,385 INFO L93 Difference]: Finished difference Result 62 states and 176 transitions. [2022-03-15 17:20:38,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 17:20:38,385 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-03-15 17:20:38,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:38,386 INFO L225 Difference]: With dead ends: 62 [2022-03-15 17:20:38,386 INFO L226 Difference]: Without dead ends: 62 [2022-03-15 17:20:38,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-03-15 17:20:38,387 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:38,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:38,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-03-15 17:20:38,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-03-15 17:20:38,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 2.8852459016393444) internal successors, (176), 61 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:38,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 176 transitions. [2022-03-15 17:20:38,405 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 176 transitions. Word has length 8 [2022-03-15 17:20:38,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:38,405 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 176 transitions. [2022-03-15 17:20:38,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:38,405 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 176 transitions. [2022-03-15 17:20:38,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-03-15 17:20:38,406 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:38,406 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:38,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:38,606 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,SelfDestructingSolverStorable2 [2022-03-15 17:20:38,608 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:38,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:38,610 INFO L85 PathProgramCache]: Analyzing trace with hash -868458162, now seen corresponding path program 3 times [2022-03-15 17:20:38,611 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:38,611 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476064628] [2022-03-15 17:20:38,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:38,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:38,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:38,659 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:38,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476064628] [2022-03-15 17:20:38,659 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476064628] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:38,659 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139777456] [2022-03-15 17:20:38,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 17:20:38,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:38,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:38,660 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) [2022-03-15 17:20:38,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-15 17:20:38,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 17:20:38,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:38,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-15 17:20:38,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:38,734 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:38,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:38,766 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:38,766 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139777456] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:38,766 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:38,767 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-03-15 17:20:38,767 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2038077631] [2022-03-15 17:20:38,767 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:38,768 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:38,769 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2022-03-15 17:20:38,769 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:38,769 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:38,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 17:20:38,769 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:38,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 17:20:38,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2022-03-15 17:20:38,770 INFO L87 Difference]: Start difference. First operand 62 states and 176 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:38,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:38,803 INFO L93 Difference]: Finished difference Result 71 states and 203 transitions. [2022-03-15 17:20:38,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 17:20:38,804 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 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 9 [2022-03-15 17:20:38,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:38,804 INFO L225 Difference]: With dead ends: 71 [2022-03-15 17:20:38,805 INFO L226 Difference]: Without dead ends: 71 [2022-03-15 17:20:38,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2022-03-15 17:20:38,805 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 57 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:38,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 0 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:38,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-03-15 17:20:38,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-03-15 17:20:38,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 2.9) internal successors, (203), 70 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:38,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 203 transitions. [2022-03-15 17:20:38,810 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 203 transitions. Word has length 9 [2022-03-15 17:20:38,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:38,810 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 203 transitions. [2022-03-15 17:20:38,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:38,810 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 203 transitions. [2022-03-15 17:20:38,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-03-15 17:20:38,811 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:38,811 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:38,846 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:39,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:39,029 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:39,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:39,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1152399070, now seen corresponding path program 4 times [2022-03-15 17:20:39,030 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:39,030 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087338008] [2022-03-15 17:20:39,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:39,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:39,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:39,107 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:39,107 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:39,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087338008] [2022-03-15 17:20:39,107 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087338008] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:39,107 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819942607] [2022-03-15 17:20:39,107 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 17:20:39,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:39,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:39,108 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) [2022-03-15 17:20:39,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-15 17:20:39,161 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 17:20:39,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:39,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-15 17:20:39,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:39,181 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:39,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:39,222 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:39,222 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819942607] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:39,222 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:39,222 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-03-15 17:20:39,222 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1081830830] [2022-03-15 17:20:39,223 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:39,223 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:39,224 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2022-03-15 17:20:39,224 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:39,224 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:39,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 17:20:39,224 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:39,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 17:20:39,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-03-15 17:20:39,225 INFO L87 Difference]: Start difference. First operand 71 states and 203 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:39,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:39,264 INFO L93 Difference]: Finished difference Result 80 states and 230 transitions. [2022-03-15 17:20:39,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 17:20:39,264 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-03-15 17:20:39,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:39,265 INFO L225 Difference]: With dead ends: 80 [2022-03-15 17:20:39,265 INFO L226 Difference]: Without dead ends: 80 [2022-03-15 17:20:39,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-03-15 17:20:39,266 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 90 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:39,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 0 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:39,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-03-15 17:20:39,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-03-15 17:20:39,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 2.911392405063291) internal successors, (230), 79 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) [2022-03-15 17:20:39,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 230 transitions. [2022-03-15 17:20:39,270 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 230 transitions. Word has length 10 [2022-03-15 17:20:39,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:39,270 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 230 transitions. [2022-03-15 17:20:39,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:39,270 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 230 transitions. [2022-03-15 17:20:39,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-15 17:20:39,271 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:39,271 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:39,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:39,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:39,487 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:39,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:39,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1364632626, now seen corresponding path program 5 times [2022-03-15 17:20:39,489 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:39,489 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691211403] [2022-03-15 17:20:39,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:39,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:39,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:39,549 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:39,549 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:39,549 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691211403] [2022-03-15 17:20:39,550 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691211403] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:39,550 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407650450] [2022-03-15 17:20:39,550 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 17:20:39,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:39,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:39,558 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) [2022-03-15 17:20:39,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-15 17:20:39,635 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 17:20:39,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:39,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 17:20:39,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:39,662 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:39,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:39,722 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:39,722 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407650450] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:39,722 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:39,722 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-03-15 17:20:39,723 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [985535272] [2022-03-15 17:20:39,723 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:39,723 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:39,724 INFO L252 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2022-03-15 17:20:39,724 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:39,725 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:39,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 17:20:39,725 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:39,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 17:20:39,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:39,726 INFO L87 Difference]: Start difference. First operand 80 states and 230 transitions. Second operand has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:39,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:39,782 INFO L93 Difference]: Finished difference Result 89 states and 257 transitions. [2022-03-15 17:20:39,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 17:20:39,783 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 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 11 [2022-03-15 17:20:39,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:39,784 INFO L225 Difference]: With dead ends: 89 [2022-03-15 17:20:39,784 INFO L226 Difference]: Without dead ends: 89 [2022-03-15 17:20:39,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:39,786 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 69 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:39,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 0 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 17:20:39,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-03-15 17:20:39,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-03-15 17:20:39,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 88 states have (on average 2.9204545454545454) internal successors, (257), 88 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:39,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 257 transitions. [2022-03-15 17:20:39,824 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 257 transitions. Word has length 11 [2022-03-15 17:20:39,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:39,824 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 257 transitions. [2022-03-15 17:20:39,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:39,824 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 257 transitions. [2022-03-15 17:20:39,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-15 17:20:39,824 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:39,824 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:39,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:40,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:40,044 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:40,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:40,045 INFO L85 PathProgramCache]: Analyzing trace with hash 646061730, now seen corresponding path program 6 times [2022-03-15 17:20:40,049 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:40,049 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231210033] [2022-03-15 17:20:40,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:40,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:40,118 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:40,119 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:40,119 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231210033] [2022-03-15 17:20:40,119 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231210033] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:40,119 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663047571] [2022-03-15 17:20:40,119 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 17:20:40,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:40,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:40,132 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) [2022-03-15 17:20:40,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-15 17:20:40,220 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 17:20:40,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:40,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 17:20:40,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:40,248 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:40,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:40,337 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:40,337 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663047571] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:40,337 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:40,337 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-03-15 17:20:40,338 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [204723723] [2022-03-15 17:20:40,338 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:40,338 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:40,339 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2022-03-15 17:20:40,339 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:40,339 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:40,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 17:20:40,340 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:40,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 17:20:40,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-03-15 17:20:40,340 INFO L87 Difference]: Start difference. First operand 89 states and 257 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:40,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:40,402 INFO L93 Difference]: Finished difference Result 98 states and 284 transitions. [2022-03-15 17:20:40,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 17:20:40,402 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2022-03-15 17:20:40,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:40,403 INFO L225 Difference]: With dead ends: 98 [2022-03-15 17:20:40,403 INFO L226 Difference]: Without dead ends: 98 [2022-03-15 17:20:40,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-03-15 17:20:40,404 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 81 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:40,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 0 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 17:20:40,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-03-15 17:20:40,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-03-15 17:20:40,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 2.9278350515463916) internal successors, (284), 97 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:40,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 284 transitions. [2022-03-15 17:20:40,407 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 284 transitions. Word has length 12 [2022-03-15 17:20:40,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:40,407 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 284 transitions. [2022-03-15 17:20:40,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:40,407 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 284 transitions. [2022-03-15 17:20:40,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-15 17:20:40,408 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:40,408 INFO L514 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:40,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:40,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:40,624 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:40,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:40,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1446922674, now seen corresponding path program 7 times [2022-03-15 17:20:40,625 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:40,625 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875293722] [2022-03-15 17:20:40,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:40,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:40,685 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:40,686 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:40,686 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875293722] [2022-03-15 17:20:40,686 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875293722] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:40,686 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153264551] [2022-03-15 17:20:40,686 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 17:20:40,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:40,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:40,704 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) [2022-03-15 17:20:40,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-15 17:20:40,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:40,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 17:20:40,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:40,830 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:40,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:40,906 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:40,907 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153264551] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:40,907 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:40,907 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2022-03-15 17:20:40,907 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [289185131] [2022-03-15 17:20:40,907 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:40,908 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:40,909 INFO L252 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2022-03-15 17:20:40,909 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:40,909 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:40,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 17:20:40,910 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:40,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 17:20:40,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-03-15 17:20:40,910 INFO L87 Difference]: Start difference. First operand 98 states and 284 transitions. Second operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:40,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:40,971 INFO L93 Difference]: Finished difference Result 107 states and 311 transitions. [2022-03-15 17:20:40,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 17:20:40,971 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 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 13 [2022-03-15 17:20:40,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:40,972 INFO L225 Difference]: With dead ends: 107 [2022-03-15 17:20:40,972 INFO L226 Difference]: Without dead ends: 107 [2022-03-15 17:20:40,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-03-15 17:20:40,973 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 90 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:40,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 0 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 17:20:40,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-03-15 17:20:40,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-03-15 17:20:40,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 2.9339622641509435) internal successors, (311), 106 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:40,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 311 transitions. [2022-03-15 17:20:40,976 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 311 transitions. Word has length 13 [2022-03-15 17:20:40,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:40,976 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 311 transitions. [2022-03-15 17:20:40,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:40,976 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 311 transitions. [2022-03-15 17:20:40,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-15 17:20:40,977 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:40,977 INFO L514 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:40,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:41,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:41,191 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:41,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:41,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1904929758, now seen corresponding path program 8 times [2022-03-15 17:20:41,192 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:41,193 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807219948] [2022-03-15 17:20:41,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:41,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:41,250 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:41,250 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:41,250 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807219948] [2022-03-15 17:20:41,251 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807219948] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:41,251 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696440380] [2022-03-15 17:20:41,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:20:41,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:41,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:41,252 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) [2022-03-15 17:20:41,253 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-15 17:20:41,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 17:20:41,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:41,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-15 17:20:41,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:41,342 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:41,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:41,435 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:41,436 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696440380] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:41,436 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:41,436 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2022-03-15 17:20:41,436 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [473177644] [2022-03-15 17:20:41,436 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:41,437 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:41,438 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 14 transitions. [2022-03-15 17:20:41,438 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:41,438 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:41,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 17:20:41,439 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:41,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 17:20:41,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-03-15 17:20:41,439 INFO L87 Difference]: Start difference. First operand 107 states and 311 transitions. Second operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:41,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:41,509 INFO L93 Difference]: Finished difference Result 116 states and 338 transitions. [2022-03-15 17:20:41,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 17:20:41,510 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2022-03-15 17:20:41,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:41,510 INFO L225 Difference]: With dead ends: 116 [2022-03-15 17:20:41,510 INFO L226 Difference]: Without dead ends: 116 [2022-03-15 17:20:41,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-03-15 17:20:41,511 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 138 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:41,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 0 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 17:20:41,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-03-15 17:20:41,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2022-03-15 17:20:41,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 2.9391304347826086) internal successors, (338), 115 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:41,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 338 transitions. [2022-03-15 17:20:41,520 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 338 transitions. Word has length 14 [2022-03-15 17:20:41,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:41,520 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 338 transitions. [2022-03-15 17:20:41,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:41,520 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 338 transitions. [2022-03-15 17:20:41,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 17:20:41,524 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:41,524 INFO L514 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:41,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:41,740 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,SelfDestructingSolverStorable8 [2022-03-15 17:20:41,740 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:41,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:41,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1076719822, now seen corresponding path program 9 times [2022-03-15 17:20:41,741 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:41,742 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258354586] [2022-03-15 17:20:41,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:41,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:41,817 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:41,817 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:41,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258354586] [2022-03-15 17:20:41,817 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258354586] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:41,817 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221746261] [2022-03-15 17:20:41,818 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 17:20:41,818 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:41,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:41,819 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) [2022-03-15 17:20:41,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-15 17:20:41,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-15 17:20:41,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:41,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 17:20:41,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:41,903 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:41,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:41,971 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:41,971 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221746261] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:41,971 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:41,971 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 16 [2022-03-15 17:20:41,971 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [965779452] [2022-03-15 17:20:41,971 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:41,972 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:41,973 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2022-03-15 17:20:41,973 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:41,974 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:41,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 17:20:41,974 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:41,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 17:20:41,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-03-15 17:20:41,974 INFO L87 Difference]: Start difference. First operand 116 states and 338 transitions. Second operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:42,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:42,044 INFO L93 Difference]: Finished difference Result 125 states and 365 transitions. [2022-03-15 17:20:42,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 17:20:42,045 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 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 15 [2022-03-15 17:20:42,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:42,046 INFO L225 Difference]: With dead ends: 125 [2022-03-15 17:20:42,046 INFO L226 Difference]: Without dead ends: 125 [2022-03-15 17:20:42,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-03-15 17:20:42,046 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 144 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:42,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 0 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 17:20:42,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-03-15 17:20:42,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2022-03-15 17:20:42,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 2.943548387096774) internal successors, (365), 124 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:42,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 365 transitions. [2022-03-15 17:20:42,049 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 365 transitions. Word has length 15 [2022-03-15 17:20:42,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:42,050 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 365 transitions. [2022-03-15 17:20:42,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:42,050 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 365 transitions. [2022-03-15 17:20:42,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 17:20:42,050 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:42,050 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:42,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-03-15 17:20:42,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-15 17:20:42,267 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:42,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:42,267 INFO L85 PathProgramCache]: Analyzing trace with hash -981423710, now seen corresponding path program 10 times [2022-03-15 17:20:42,268 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:42,268 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774777627] [2022-03-15 17:20:42,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:42,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:42,384 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:42,385 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:42,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774777627] [2022-03-15 17:20:42,385 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774777627] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:42,385 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79623441] [2022-03-15 17:20:42,385 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 17:20:42,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:42,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:42,386 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) [2022-03-15 17:20:42,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-15 17:20:42,449 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 17:20:42,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:42,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 17:20:42,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:42,477 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:42,478 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:42,533 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:42,534 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79623441] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:42,534 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:42,534 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 16 [2022-03-15 17:20:42,534 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [754652514] [2022-03-15 17:20:42,534 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:42,536 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:42,537 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 16 transitions. [2022-03-15 17:20:42,537 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:42,537 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:42,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 17:20:42,537 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:42,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 17:20:42,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-03-15 17:20:42,538 INFO L87 Difference]: Start difference. First operand 125 states and 365 transitions. Second operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:42,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:42,609 INFO L93 Difference]: Finished difference Result 134 states and 392 transitions. [2022-03-15 17:20:42,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 17:20:42,609 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 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 16 [2022-03-15 17:20:42,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:42,610 INFO L225 Difference]: With dead ends: 134 [2022-03-15 17:20:42,610 INFO L226 Difference]: Without dead ends: 134 [2022-03-15 17:20:42,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-03-15 17:20:42,610 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 162 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:42,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 0 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 17:20:42,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-03-15 17:20:42,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2022-03-15 17:20:42,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 2.9473684210526314) internal successors, (392), 133 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:42,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 392 transitions. [2022-03-15 17:20:42,631 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 392 transitions. Word has length 16 [2022-03-15 17:20:42,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:42,633 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 392 transitions. [2022-03-15 17:20:42,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:42,634 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 392 transitions. [2022-03-15 17:20:42,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 17:20:42,634 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:42,634 INFO L514 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:42,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:42,850 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,SelfDestructingSolverStorable10 [2022-03-15 17:20:42,850 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:42,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:42,850 INFO L85 PathProgramCache]: Analyzing trace with hash -359363762, now seen corresponding path program 11 times [2022-03-15 17:20:42,851 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:42,851 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880098525] [2022-03-15 17:20:42,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:42,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:42,945 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:42,945 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:42,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880098525] [2022-03-15 17:20:42,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880098525] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:42,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611292928] [2022-03-15 17:20:42,945 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 17:20:42,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:42,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:42,946 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) [2022-03-15 17:20:42,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-15 17:20:43,014 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-03-15 17:20:43,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:43,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-15 17:20:43,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:43,047 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:43,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:43,098 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:43,098 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611292928] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:43,098 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:43,098 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 16 [2022-03-15 17:20:43,098 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [626600406] [2022-03-15 17:20:43,098 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:43,099 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:43,101 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2022-03-15 17:20:43,101 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:43,101 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:43,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 17:20:43,102 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:43,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 17:20:43,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-03-15 17:20:43,102 INFO L87 Difference]: Start difference. First operand 134 states and 392 transitions. Second operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:43,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:43,179 INFO L93 Difference]: Finished difference Result 143 states and 419 transitions. [2022-03-15 17:20:43,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 17:20:43,180 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2022-03-15 17:20:43,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:43,181 INFO L225 Difference]: With dead ends: 143 [2022-03-15 17:20:43,181 INFO L226 Difference]: Without dead ends: 143 [2022-03-15 17:20:43,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-03-15 17:20:43,182 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 159 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:43,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 0 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 17:20:43,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-03-15 17:20:43,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2022-03-15 17:20:43,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 2.9507042253521125) internal successors, (419), 142 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:43,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 419 transitions. [2022-03-15 17:20:43,187 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 419 transitions. Word has length 17 [2022-03-15 17:20:43,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:43,187 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 419 transitions. [2022-03-15 17:20:43,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:43,187 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 419 transitions. [2022-03-15 17:20:43,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 17:20:43,188 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:43,188 INFO L514 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:43,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:43,406 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,SelfDestructingSolverStorable11 [2022-03-15 17:20:43,407 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:43,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:43,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1744625442, now seen corresponding path program 12 times [2022-03-15 17:20:43,408 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:43,408 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382605867] [2022-03-15 17:20:43,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:43,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:43,508 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:43,508 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:43,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382605867] [2022-03-15 17:20:43,508 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382605867] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:43,508 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212885306] [2022-03-15 17:20:43,508 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 17:20:43,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:43,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:43,509 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) [2022-03-15 17:20:43,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-15 17:20:43,576 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-15 17:20:43,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:43,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 17:20:43,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:43,607 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:43,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:43,657 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:43,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212885306] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:43,658 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:43,658 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 16 [2022-03-15 17:20:43,658 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1770794740] [2022-03-15 17:20:43,658 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:43,659 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:43,662 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 18 transitions. [2022-03-15 17:20:43,662 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:43,662 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:43,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 17:20:43,662 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:43,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 17:20:43,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-03-15 17:20:43,663 INFO L87 Difference]: Start difference. First operand 143 states and 419 transitions. Second operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:43,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:43,751 INFO L93 Difference]: Finished difference Result 152 states and 446 transitions. [2022-03-15 17:20:43,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 17:20:43,751 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 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 18 [2022-03-15 17:20:43,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:43,752 INFO L225 Difference]: With dead ends: 152 [2022-03-15 17:20:43,752 INFO L226 Difference]: Without dead ends: 152 [2022-03-15 17:20:43,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-03-15 17:20:43,753 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 237 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:43,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 0 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 17:20:43,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-03-15 17:20:43,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2022-03-15 17:20:43,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 2.9536423841059603) internal successors, (446), 151 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:43,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 446 transitions. [2022-03-15 17:20:43,757 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 446 transitions. Word has length 18 [2022-03-15 17:20:43,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:43,757 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 446 transitions. [2022-03-15 17:20:43,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:43,757 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 446 transitions. [2022-03-15 17:20:43,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 17:20:43,757 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:43,757 INFO L514 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:43,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:43,973 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,SelfDestructingSolverStorable12 [2022-03-15 17:20:43,974 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:43,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:43,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1751185970, now seen corresponding path program 13 times [2022-03-15 17:20:43,975 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:43,975 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348971423] [2022-03-15 17:20:43,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:43,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:43,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:44,093 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:44,094 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:44,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348971423] [2022-03-15 17:20:44,094 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348971423] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:44,094 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144311555] [2022-03-15 17:20:44,094 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 17:20:44,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:44,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:44,095 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) [2022-03-15 17:20:44,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-15 17:20:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:44,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-15 17:20:44,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:44,200 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:44,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:44,235 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:44,236 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144311555] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:44,236 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:44,236 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 16 [2022-03-15 17:20:44,236 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1299008755] [2022-03-15 17:20:44,236 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:44,237 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:44,239 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2022-03-15 17:20:44,239 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:44,239 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:44,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 17:20:44,239 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:44,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 17:20:44,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-03-15 17:20:44,240 INFO L87 Difference]: Start difference. First operand 152 states and 446 transitions. Second operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:44,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:44,332 INFO L93 Difference]: Finished difference Result 161 states and 473 transitions. [2022-03-15 17:20:44,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-15 17:20:44,332 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2022-03-15 17:20:44,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:44,333 INFO L225 Difference]: With dead ends: 161 [2022-03-15 17:20:44,333 INFO L226 Difference]: Without dead ends: 161 [2022-03-15 17:20:44,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-03-15 17:20:44,334 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 195 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:44,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 0 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 17:20:44,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-03-15 17:20:44,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2022-03-15 17:20:44,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 2.95625) internal successors, (473), 160 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:44,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 473 transitions. [2022-03-15 17:20:44,337 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 473 transitions. Word has length 19 [2022-03-15 17:20:44,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:44,337 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 473 transitions. [2022-03-15 17:20:44,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:44,337 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 473 transitions. [2022-03-15 17:20:44,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 17:20:44,338 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:44,338 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:44,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:44,553 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,SelfDestructingSolverStorable13 [2022-03-15 17:20:44,554 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:44,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:44,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1547809954, now seen corresponding path program 14 times [2022-03-15 17:20:44,555 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:44,555 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817148475] [2022-03-15 17:20:44,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:44,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:44,958 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:44,958 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:44,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817148475] [2022-03-15 17:20:44,958 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817148475] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:44,958 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890310130] [2022-03-15 17:20:44,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:20:44,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:44,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:44,959 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) [2022-03-15 17:20:44,961 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-15 17:20:45,031 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 17:20:45,031 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:45,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 46 conjunts are in the unsatisfiable core [2022-03-15 17:20:45,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:45,671 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 78 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:45,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:21:37,399 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:21:37,400 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890310130] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:21:37,400 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:21:37,400 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2022-03-15 17:21:37,400 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2142400151] [2022-03-15 17:21:37,400 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:21:37,401 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:21:37,403 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 20 transitions. [2022-03-15 17:21:37,403 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:21:37,403 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:21:37,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 17:21:37,403 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:21:37,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 17:21:37,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=1767, Unknown=15, NotChecked=0, Total=2162 [2022-03-15 17:21:37,404 INFO L87 Difference]: Start difference. First operand 161 states and 473 transitions. Second operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:38,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:21:38,521 INFO L93 Difference]: Finished difference Result 294 states and 868 transitions. [2022-03-15 17:21:38,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 17:21:38,522 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2022-03-15 17:21:38,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:21:38,523 INFO L225 Difference]: With dead ends: 294 [2022-03-15 17:21:38,523 INFO L226 Difference]: Without dead ends: 294 [2022-03-15 17:21:38,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 488 ImplicationChecksByTransitivity, 44.2s TimeCoverageRelationStatistics Valid=380, Invalid=1767, Unknown=15, NotChecked=0, Total=2162 [2022-03-15 17:21:38,524 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 60 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:21:38,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 0 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-03-15 17:21:38,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-03-15 17:21:38,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 280. [2022-03-15 17:21:38,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 3.060931899641577) internal successors, (854), 279 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:38,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 854 transitions. [2022-03-15 17:21:38,529 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 854 transitions. Word has length 20 [2022-03-15 17:21:38,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:21:38,529 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 854 transitions. [2022-03-15 17:21:38,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:38,529 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 854 transitions. [2022-03-15 17:21:38,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 17:21:38,530 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:21:38,530 INFO L514 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1] [2022-03-15 17:21:38,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-15 17:21:38,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:38,731 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:21:38,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:21:38,732 INFO L85 PathProgramCache]: Analyzing trace with hash 737468494, now seen corresponding path program 15 times [2022-03-15 17:21:38,733 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:21:38,733 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771640564] [2022-03-15 17:21:38,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:38,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:21:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:38,899 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 106 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:21:38,899 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:21:38,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771640564] [2022-03-15 17:21:38,899 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771640564] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:21:38,899 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304026528] [2022-03-15 17:21:38,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 17:21:38,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:38,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:21:38,900 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) [2022-03-15 17:21:38,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-15 17:21:39,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-03-15 17:21:39,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:21:39,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-15 17:21:39,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:21:39,062 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:21:39,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 17:21:39,062 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304026528] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 17:21:39,062 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 17:21:39,063 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [17] total 18 [2022-03-15 17:21:39,063 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [845733696] [2022-03-15 17:21:39,063 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:21:39,064 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:21:39,066 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2022-03-15 17:21:39,066 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:21:39,066 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:21:39,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 17:21:39,067 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:21:39,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 17:21:39,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=167, Unknown=0, NotChecked=0, Total=306 [2022-03-15 17:21:39,069 INFO L87 Difference]: Start difference. First operand 280 states and 854 transitions. Second operand has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:39,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:21:39,295 INFO L93 Difference]: Finished difference Result 292 states and 845 transitions. [2022-03-15 17:21:39,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 17:21:39,296 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 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 21 [2022-03-15 17:21:39,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:21:39,301 INFO L225 Difference]: With dead ends: 292 [2022-03-15 17:21:39,302 INFO L226 Difference]: Without dead ends: 276 [2022-03-15 17:21:39,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=167, Unknown=0, NotChecked=0, Total=306 [2022-03-15 17:21:39,303 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 96 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-15 17:21:39,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 0 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-15 17:21:39,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-03-15 17:21:39,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2022-03-15 17:21:39,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 2.901818181818182) internal successors, (798), 275 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:39,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 798 transitions. [2022-03-15 17:21:39,322 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 798 transitions. Word has length 21 [2022-03-15 17:21:39,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:21:39,322 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 798 transitions. [2022-03-15 17:21:39,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:39,322 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 798 transitions. [2022-03-15 17:21:39,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 17:21:39,322 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:21:39,323 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:21:39,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-15 17:21:39,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-15 17:21:39,532 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:21:39,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:21:39,533 INFO L85 PathProgramCache]: Analyzing trace with hash 802506834, now seen corresponding path program 1 times [2022-03-15 17:21:39,534 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:21:39,534 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175707938] [2022-03-15 17:21:39,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:39,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:21:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:39,905 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:21:39,905 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:21:39,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175707938] [2022-03-15 17:21:39,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175707938] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:21:39,905 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130319312] [2022-03-15 17:21:39,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:39,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:39,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:21:39,907 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) [2022-03-15 17:21:39,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-15 17:21:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:39,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-15 17:21:39,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:21:40,794 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 78 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:21:40,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:22:59,038 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:22:59,038 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130319312] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:22:59,038 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:22:59,039 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 48 [2022-03-15 17:22:59,039 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [15808122] [2022-03-15 17:22:59,039 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:22:59,040 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:22:59,045 INFO L252 McrAutomatonBuilder]: Finished intersection with 53 states and 82 transitions. [2022-03-15 17:22:59,045 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:23:00,577 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 14 new interpolants: [7728#(and (<= (+ ~i~0 376) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ ~j~0 ~i~0 375) (+ (* ~prev~0 55) (* ~cur~0 89)))), 7719#(and (<= (+ ~j~0 ~i~0 375) (+ ~prev~0 ~cur~0)) (<= (+ ~i~0 376) (+ ~prev~0 ~cur~0))), 7720#(and (<= (+ ~i~0 376) (+ ~prev~0 (* ~cur~0 2))) (<= (+ ~j~0 ~i~0 375) (+ ~prev~0 (* ~cur~0 2)))), 7726#(and (<= (+ ~j~0 ~i~0 375) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ ~i~0 376) (+ (* ~cur~0 34) (* ~prev~0 21)))), 7721#(and (<= (+ ~j~0 ~i~0 375) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ ~i~0 376) (+ (* ~cur~0 3) (* ~prev~0 2)))), 7717#(and (<= (+ ~i~0 376) ~prev~0) (<= (+ ~j~0 ~i~0 375) ~prev~0)), 7724#(and (<= (+ ~j~0 ~i~0 375) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ ~i~0 376) (+ (* ~prev~0 8) (* ~cur~0 13)))), 7725#(and (<= (+ ~j~0 ~i~0 375) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ ~i~0 376) (+ (* ~cur~0 21) (* ~prev~0 13)))), 7718#(and (<= (+ ~j~0 ~i~0 375) ~cur~0) (<= (+ ~i~0 376) ~cur~0)), 7723#(and (<= (+ ~j~0 ~i~0 375) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ ~i~0 376) (+ (* ~prev~0 5) (* ~cur~0 8)))), 7722#(and (<= (+ ~i~0 376) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ ~j~0 ~i~0 375) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 7727#(and (<= (+ ~i~0 376) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ ~j~0 ~i~0 375) (+ (* ~cur~0 55) (* ~prev~0 34)))), 7729#(and (<= (+ ~j~0 ~i~0 375) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ ~i~0 376) (+ (* ~prev~0 89) (* ~cur~0 144)))), 7730#(and (<= (+ ~j~0 ~i~0 375) (+ (* 233 ~cur~0) (* ~prev~0 144))) (<= (+ ~i~0 376) (+ (* 233 ~cur~0) (* ~prev~0 144))))] [2022-03-15 17:23:00,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 17:23:00,577 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:23:00,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 17:23:00,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=584, Invalid=3426, Unknown=22, NotChecked=0, Total=4032 [2022-03-15 17:23:00,579 INFO L87 Difference]: Start difference. First operand 276 states and 798 transitions. Second operand has 32 states, 31 states have (on average 2.096774193548387) internal successors, (65), 31 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:23:03,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:23:03,690 INFO L93 Difference]: Finished difference Result 372 states and 1080 transitions. [2022-03-15 17:23:03,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 17:23:03,690 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.096774193548387) internal successors, (65), 31 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-03-15 17:23:03,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:23:03,692 INFO L225 Difference]: With dead ends: 372 [2022-03-15 17:23:03,692 INFO L226 Difference]: Without dead ends: 356 [2022-03-15 17:23:03,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1401 ImplicationChecksByTransitivity, 64.3s TimeCoverageRelationStatistics Valid=726, Invalid=5414, Unknown=22, NotChecked=0, Total=6162 [2022-03-15 17:23:03,693 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 153 mSDsluCounter, 1845 mSDsCounter, 0 mSdLazyCounter, 3319 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-03-15 17:23:03,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 0 Invalid, 3320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3319 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-03-15 17:23:03,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-03-15 17:23:03,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 324. [2022-03-15 17:23:03,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 323 states have (on average 3.0061919504643964) internal successors, (971), 323 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:23:03,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 971 transitions. [2022-03-15 17:23:03,702 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 971 transitions. Word has length 22 [2022-03-15 17:23:03,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:23:03,703 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 971 transitions. [2022-03-15 17:23:03,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.096774193548387) internal successors, (65), 31 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:23:03,703 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 971 transitions. [2022-03-15 17:23:03,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 17:23:03,704 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:23:03,704 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:23:03,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-15 17:23:03,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-15 17:23:03,943 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:23:03,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:23:03,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1386628420, now seen corresponding path program 1 times [2022-03-15 17:23:03,945 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:23:03,945 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288244535] [2022-03-15 17:23:03,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:23:03,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:23:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:23:04,399 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:23:04,399 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:23:04,399 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288244535] [2022-03-15 17:23:04,399 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288244535] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:23:04,400 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315808554] [2022-03-15 17:23:04,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:23:04,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:23:04,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:23:04,401 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) [2022-03-15 17:23:04,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-15 17:23:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:23:04,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 47 conjunts are in the unsatisfiable core [2022-03-15 17:23:04,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:23:05,503 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 78 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:23:05,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:24:08,931 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:24:08,931 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315808554] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:24:08,931 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:24:08,931 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 48 [2022-03-15 17:24:08,932 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1718609329] [2022-03-15 17:24:08,932 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:24:08,934 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:24:08,940 INFO L252 McrAutomatonBuilder]: Finished intersection with 57 states and 90 transitions. [2022-03-15 17:24:08,940 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:24:10,941 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 15 new interpolants: [8963#(and (<= (+ ~i~0 376) (+ (* ~prev~0 8) ~j~0 (* ~cur~0 13))) (<= 377 (+ (* ~prev~0 8) (* ~cur~0 13))) (= (+ (- 1) ~j~0) 0)), 8961#(and (<= 377 (+ (* 5 ~cur~0) (* ~prev~0 3))) (= (+ (- 1) ~j~0) 0) (<= (+ ~i~0 376) (+ (* 5 ~cur~0) ~j~0 (* ~prev~0 3)))), 8962#(and (<= (+ ~i~0 376) (+ (* ~prev~0 5) (* ~cur~0 8) ~j~0)) (= (+ (- 1) ~j~0) 0) (<= 377 (+ (* ~prev~0 5) (* ~cur~0 8)))), 8958#(and (<= 377 (+ ~prev~0 ~cur~0)) (= (+ (- 1) ~j~0) 0) (<= (+ ~i~0 376) (+ ~prev~0 ~cur~0 ~j~0))), 8970#(and (= ~j~0 1) (<= 377 (+ (* ~cur~0 377) (* 233 ~prev~0))) (<= (+ ~i~0 376) (+ (* ~cur~0 377) ~j~0 (* 233 ~prev~0)))), 8969#(and (<= (+ ~i~0 376) (+ (* 233 ~cur~0) ~j~0 (* ~prev~0 144))) (= ~j~0 1) (<= 377 (+ (* 233 ~cur~0) (* ~prev~0 144)))), 8960#(and (<= (+ ~i~0 376) (+ (* ~cur~0 3) (* ~prev~0 2) ~j~0)) (= (+ (- 1) ~j~0) 0) (<= 377 (+ (* ~cur~0 3) (* ~prev~0 2)))), 8968#(and (<= (+ ~i~0 376) (+ (* ~prev~0 89) ~j~0 (* ~cur~0 144))) (<= 377 (+ (* ~prev~0 89) (* ~cur~0 144))) (= ~j~0 1)), 8966#(and (<= (+ ~i~0 376) (+ ~j~0 (* ~cur~0 55) (* ~prev~0 34))) (= ~j~0 1) (<= 377 (+ (* ~cur~0 55) (* ~prev~0 34)))), 8957#(and (<= (+ ~i~0 376) (+ ~cur~0 ~j~0)) (= (+ (- 1) ~j~0) 0) (<= 377 ~cur~0)), 8965#(and (<= 377 (+ (* ~cur~0 34) (* ~prev~0 21))) (= ~j~0 1) (<= (+ ~i~0 376) (+ ~j~0 (* ~cur~0 34) (* ~prev~0 21)))), 8959#(and (= (+ (- 1) ~j~0) 0) (<= 377 (+ ~prev~0 (* ~cur~0 2))) (<= (+ ~i~0 376) (+ ~prev~0 ~j~0 (* ~cur~0 2)))), 8971#(and (<= (+ ~i~0 376) (+ (* ~cur~0 377) (* 233 ~prev~0))) (= ~j~0 1) (<= 377 (+ (* ~cur~0 377) (* 233 ~prev~0)))), 8967#(and (<= (+ ~i~0 376) (+ ~j~0 (* ~prev~0 55) (* ~cur~0 89))) (= ~j~0 1) (<= 377 (+ (* ~prev~0 55) (* ~cur~0 89)))), 8964#(and (<= 377 (+ (* ~cur~0 21) (* ~prev~0 13))) (= ~j~0 1) (<= (+ ~i~0 376) (+ (* ~cur~0 21) (* ~prev~0 13) ~j~0)))] [2022-03-15 17:24:10,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 17:24:10,942 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:24:10,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 17:24:10,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=3684, Unknown=15, NotChecked=0, Total=4160 [2022-03-15 17:24:10,944 INFO L87 Difference]: Start difference. First operand 324 states and 971 transitions. Second operand has 33 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:24:16,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:24:16,267 INFO L93 Difference]: Finished difference Result 1788 states and 5157 transitions. [2022-03-15 17:24:16,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-03-15 17:24:16,267 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 0 states have call successors, (0), 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 22 [2022-03-15 17:24:16,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:24:16,274 INFO L225 Difference]: With dead ends: 1788 [2022-03-15 17:24:16,274 INFO L226 Difference]: Without dead ends: 1758 [2022-03-15 17:24:16,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 16 SyntacticMatches, 13 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2907 ImplicationChecksByTransitivity, 54.9s TimeCoverageRelationStatistics Valid=2254, Invalid=8651, Unknown=15, NotChecked=0, Total=10920 [2022-03-15 17:24:16,277 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 381 mSDsluCounter, 1688 mSDsCounter, 0 mSdLazyCounter, 3135 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 3135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-15 17:24:16,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 0 Invalid, 3311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 3135 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-15 17:24:16,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1758 states. [2022-03-15 17:24:16,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1758 to 392. [2022-03-15 17:24:16,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 2.9028132992327365) internal successors, (1135), 391 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:24:16,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1135 transitions. [2022-03-15 17:24:16,290 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1135 transitions. Word has length 22 [2022-03-15 17:24:16,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:24:16,291 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 1135 transitions. [2022-03-15 17:24:16,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.21875) internal successors, (71), 32 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:24:16,291 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1135 transitions. [2022-03-15 17:24:16,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-15 17:24:16,291 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:24:16,292 INFO L514 BasicCegarLoop]: trace histogram [14, 2, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:24:16,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-15 17:24:16,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-15 17:24:16,508 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:24:16,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:24:16,508 INFO L85 PathProgramCache]: Analyzing trace with hash -381557569, now seen corresponding path program 2 times [2022-03-15 17:24:16,509 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:24:16,509 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850664142] [2022-03-15 17:24:16,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:24:16,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:24:16,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:24:16,927 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:24:16,927 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:24:16,927 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850664142] [2022-03-15 17:24:16,927 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850664142] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:24:16,927 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201786861] [2022-03-15 17:24:16,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:24:16,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:24:16,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:24:16,928 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) [2022-03-15 17:24:16,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-15 17:24:16,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 17:24:16,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:24:16,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 48 conjunts are in the unsatisfiable core [2022-03-15 17:24:17,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:24:17,954 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 78 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:24:17,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:26:04,922 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:26:04,922 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201786861] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:26:04,922 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:26:04,922 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 51 [2022-03-15 17:26:04,930 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1201222996] [2022-03-15 17:26:04,930 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:26:04,932 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:26:04,947 INFO L252 McrAutomatonBuilder]: Finished intersection with 69 states and 113 transitions. [2022-03-15 17:26:04,948 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:26:08,169 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 28 new interpolants: [11809#(and (<= (+ ~i~0 376) ~prev~0) (<= (+ ~j~0 ~i~0 374) ~prev~0)), 11825#(and (<= (+ ~j~0 ~i~0 374) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ ~i~0 376) (+ (* ~cur~0 34) (* ~prev~0 21)))), 11820#(and (<= (+ ~i~0 376) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ ~j~0 374 (* 2 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 11826#(and (<= (+ ~j~0 374 (* 2 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ ~i~0 376) (+ (* ~prev~0 8) (* ~cur~0 13)))), 11821#(and (<= (+ ~j~0 ~i~0 374) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ ~i~0 376) (+ (* ~prev~0 5) (* ~cur~0 8)))), 11815#(and (<= (+ ~j~0 ~i~0 374) (+ ~prev~0 (* ~cur~0 2))) (<= (+ ~i~0 376) (+ ~prev~0 (* ~cur~0 2)))), 11828#(and (<= (+ ~j~0 374 (* 2 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ ~i~0 376) (+ (* ~cur~0 34) (* ~prev~0 21)))), 11814#(and (<= (+ ~j~0 374 (* 2 ~i~0)) (+ ~prev~0 ~cur~0)) (<= (+ ~i~0 376) (+ ~prev~0 ~cur~0))), 11830#(and (<= (+ ~i~0 376) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ ~j~0 374 (* 2 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34)))), 11812#(and (<= (+ ~j~0 374 (* 2 ~i~0)) ~cur~0) (<= (+ ~i~0 376) ~cur~0)), 11810#(and (<= (+ ~i~0 376) ~cur~0) (<= (+ ~j~0 ~i~0 374) ~cur~0)), 11813#(and (<= (+ ~j~0 ~i~0 374) (+ ~prev~0 ~cur~0)) (<= (+ ~i~0 376) (+ ~prev~0 ~cur~0))), 11817#(and (<= (+ ~i~0 376) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ ~j~0 ~i~0 374) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 11811#(and (<= (+ ~i~0 376) ~prev~0) (<= (+ ~j~0 374 (* 2 ~i~0)) ~prev~0)), 11816#(and (<= (+ ~i~0 376) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ ~j~0 ~i~0 374) (+ (* ~cur~0 3) (* ~prev~0 2)))), 11824#(and (<= (+ ~i~0 376) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ ~j~0 ~i~0 374) (+ (* ~cur~0 21) (* ~prev~0 13)))), 11834#(and (<= (+ ~j~0 ~i~0 374) (+ (* 233 ~cur~0) (* ~prev~0 144))) (<= (+ ~i~0 376) (+ (* 233 ~cur~0) (* ~prev~0 144)))), 11836#(and (<= (+ ~j~0 374 (* 2 ~i~0)) (+ (* 233 ~cur~0) (* ~prev~0 144))) (<= (+ ~i~0 376) (+ (* 233 ~cur~0) (* ~prev~0 144)))), 11818#(and (<= (+ ~j~0 374 (* 2 ~i~0)) (+ ~prev~0 (* ~cur~0 2))) (<= (+ ~i~0 376) (+ ~prev~0 (* ~cur~0 2)))), 11823#(and (<= (+ ~i~0 376) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ ~j~0 ~i~0 374) (+ (* ~prev~0 8) (* ~cur~0 13)))), 11835#(and (<= (+ ~i~0 376) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ ~j~0 374 (* 2 ~i~0)) (+ (* ~prev~0 89) (* ~cur~0 144)))), 11832#(and (<= (+ ~i~0 376) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ ~j~0 374 (* 2 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89)))), 11833#(and (<= (+ ~i~0 376) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ ~j~0 ~i~0 374) (+ (* ~prev~0 89) (* ~cur~0 144)))), 11822#(and (<= (+ ~j~0 374 (* 2 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ ~i~0 376) (+ (* ~prev~0 5) (* ~cur~0 8)))), 11829#(and (<= (+ ~i~0 376) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ ~j~0 ~i~0 374) (+ (* ~cur~0 55) (* ~prev~0 34)))), 11831#(and (<= (+ ~j~0 ~i~0 374) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ ~i~0 376) (+ (* ~prev~0 55) (* ~cur~0 89)))), 11819#(and (<= (+ ~i~0 376) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ ~j~0 374 (* 2 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2)))), 11827#(and (<= (+ ~j~0 374 (* 2 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ ~i~0 376) (+ (* ~cur~0 21) (* ~prev~0 13))))] [2022-03-15 17:26:08,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-03-15 17:26:08,169 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:26:08,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-03-15 17:26:08,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=711, Invalid=5740, Unknown=29, NotChecked=0, Total=6480 [2022-03-15 17:26:08,171 INFO L87 Difference]: Start difference. First operand 392 states and 1135 transitions. Second operand has 47 states, 46 states have (on average 2.0652173913043477) internal successors, (95), 46 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:26:14,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:26:14,190 INFO L93 Difference]: Finished difference Result 536 states and 1558 transitions. [2022-03-15 17:26:14,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-03-15 17:26:14,191 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.0652173913043477) internal successors, (95), 46 states have internal predecessors, (95), 0 states have call successors, (0), 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 23 [2022-03-15 17:26:14,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:26:14,193 INFO L225 Difference]: With dead ends: 536 [2022-03-15 17:26:14,193 INFO L226 Difference]: Without dead ends: 520 [2022-03-15 17:26:14,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2619 ImplicationChecksByTransitivity, 93.0s TimeCoverageRelationStatistics Valid=1027, Invalid=11154, Unknown=29, NotChecked=0, Total=12210 [2022-03-15 17:26:14,196 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 306 mSDsluCounter, 2732 mSDsCounter, 0 mSdLazyCounter, 4851 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-03-15 17:26:14,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 0 Invalid, 4853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4851 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-03-15 17:26:14,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-03-15 17:26:14,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 440. [2022-03-15 17:26:14,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 2.979498861047836) internal successors, (1308), 439 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:26:14,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1308 transitions. [2022-03-15 17:26:14,204 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1308 transitions. Word has length 23 [2022-03-15 17:26:14,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:26:14,204 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 1308 transitions. [2022-03-15 17:26:14,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.0652173913043477) internal successors, (95), 46 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:26:14,204 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1308 transitions. [2022-03-15 17:26:14,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-15 17:26:14,205 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:26:14,205 INFO L514 BasicCegarLoop]: trace histogram [14, 2, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:26:14,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-03-15 17:26:14,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:26:14,406 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:26:14,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:26:14,406 INFO L85 PathProgramCache]: Analyzing trace with hash 35808267, now seen corresponding path program 2 times [2022-03-15 17:26:14,408 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:26:14,408 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341058478] [2022-03-15 17:26:14,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:26:14,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:26:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:26:14,944 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:26:14,945 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:26:14,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341058478] [2022-03-15 17:26:14,945 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341058478] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:26:14,945 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815446441] [2022-03-15 17:26:14,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:26:14,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:26:14,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:26:14,946 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) [2022-03-15 17:26:14,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-15 17:26:15,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 17:26:15,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:26:15,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 48 conjunts are in the unsatisfiable core [2022-03-15 17:26:15,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:26:15,873 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 78 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:26:15,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:27:20,660 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:27:20,661 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815446441] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:27:20,661 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:27:20,661 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 51 [2022-03-15 17:27:20,661 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [269372257] [2022-03-15 17:27:20,661 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:27:20,663 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:27:20,670 INFO L252 McrAutomatonBuilder]: Finished intersection with 75 states and 125 transitions. [2022-03-15 17:27:20,671 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:27:24,496 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 29 new interpolants: [13522#(and (<= (+ ~i~0 376) (+ ~j~0 (* ~prev~0 55) (* ~cur~0 89))) (= ~j~0 1) (<= 377 (+ (* ~prev~0 55) (* ~cur~0 89)))), 13502#(and (<= (+ ~i~0 376) (+ ~prev~0 (* 2 ~j~0) (* ~cur~0 2))) (= (+ (- 1) ~j~0) 0) (<= 377 (+ ~prev~0 (* ~cur~0 2)))), 13515#(and (<= 377 (+ (* 5 ~cur~0) (* ~prev~0 3))) (= ~j~0 1) (<= (+ ~i~0 376) (+ (* 5 ~cur~0) ~j~0 (* ~prev~0 3)))), 13505#(and (<= (+ ~i~0 376) (+ (* 5 ~cur~0) (* 2 ~j~0) (* ~prev~0 3))) (<= 377 (+ (* 5 ~cur~0) (* ~prev~0 3))) (= (+ (- 1) ~j~0) 0)), 13518#(and (<= (+ ~i~0 376) (+ (* ~prev~0 8) ~j~0 (* ~cur~0 13))) (= ~j~0 1) (<= 377 (+ (* ~prev~0 8) (* ~cur~0 13)))), 13525#(and (= ~j~0 1) (<= 377 (+ (* ~cur~0 377) (* 233 ~prev~0))) (<= (+ ~i~0 376) (+ (* ~cur~0 377) ~j~0 (* 233 ~prev~0)))), 13523#(and (<= (+ ~i~0 376) (+ (* ~prev~0 89) ~j~0 (* ~cur~0 144))) (<= 377 (+ (* ~prev~0 89) (* ~cur~0 144))) (= ~j~0 1)), 13511#(and (<= (+ ~i~0 376) (+ (* 2 ~j~0) (* ~prev~0 55) (* ~cur~0 89))) (= (+ (- 1) ~j~0) 0) (<= 377 (+ (* ~prev~0 55) (* ~cur~0 89)))), 13517#(and (<= 377 (+ (* ~cur~0 377) (* 233 ~prev~0))) (= (+ (- 1) ~j~0) 0) (<= (+ ~i~0 376) (+ (* 2 ~j~0) (* ~cur~0 377) (* 233 ~prev~0)))), 13508#(and (<= 377 (+ (* ~cur~0 21) (* ~prev~0 13))) (= (+ (- 1) ~j~0) 0) (<= (+ ~i~0 376) (+ (* ~cur~0 21) (* ~prev~0 13) (* 2 ~j~0)))), 13516#(and (= ~j~0 1) (<= (+ ~i~0 376) (+ (* ~prev~0 5) (* ~cur~0 8) ~j~0)) (<= 377 (+ (* ~prev~0 5) (* ~cur~0 8)))), 13521#(and (<= (+ ~i~0 376) (+ ~j~0 (* ~cur~0 55) (* ~prev~0 34))) (= ~j~0 1) (<= 377 (+ (* ~cur~0 55) (* ~prev~0 34)))), 13524#(and (<= (+ ~i~0 376) (+ (* 233 ~cur~0) ~j~0 (* ~prev~0 144))) (= ~j~0 1) (<= 377 (+ (* 233 ~cur~0) (* ~prev~0 144)))), 13503#(and (= ~j~0 1) (<= 377 (+ ~prev~0 (* ~cur~0 2))) (<= (+ ~i~0 376) (+ ~prev~0 ~j~0 (* ~cur~0 2)))), 13507#(and (<= 377 (+ (* ~prev~0 8) (* ~cur~0 13))) (= (+ (- 1) ~j~0) 0) (<= (+ ~i~0 376) (+ (* 2 ~j~0) (* ~prev~0 8) (* ~cur~0 13)))), 13506#(and (<= (+ ~i~0 376) (+ (* ~prev~0 5) (* ~cur~0 8) (* 2 ~j~0))) (= (+ (- 1) ~j~0) 0) (<= 377 (+ (* ~prev~0 5) (* ~cur~0 8)))), 13520#(and (<= 377 (+ (* ~cur~0 34) (* ~prev~0 21))) (= ~j~0 1) (<= (+ ~i~0 376) (+ ~j~0 (* ~cur~0 34) (* ~prev~0 21)))), 13499#(and (<= (+ ~i~0 376) (+ ~cur~0 ~j~0)) (= ~j~0 1) (<= 377 ~cur~0)), 13498#(and (<= (+ ~i~0 376) (+ ~cur~0 (* 2 ~j~0))) (= (+ (- 1) ~j~0) 0) (<= 377 ~cur~0)), 13510#(and (<= (+ ~i~0 376) (+ (* 2 ~j~0) (* ~cur~0 55) (* ~prev~0 34))) (= (+ (- 1) ~j~0) 0) (<= 377 (+ (* ~cur~0 55) (* ~prev~0 34)))), 13501#(and (= ~j~0 1) (<= 377 (+ ~prev~0 ~cur~0)) (<= (+ ~i~0 376) (+ ~prev~0 ~cur~0 ~j~0))), 13500#(and (<= (+ ~i~0 376) (+ ~prev~0 ~cur~0 (* 2 ~j~0))) (<= 377 (+ ~prev~0 ~cur~0)) (= (+ (- 1) ~j~0) 0)), 13513#(and (<= (+ ~i~0 376) (+ (* 233 ~cur~0) (* 2 ~j~0) (* ~prev~0 144))) (<= 377 (+ (* 233 ~cur~0) (* ~prev~0 144))) (= (+ (- 1) ~j~0) 0)), 13504#(and (= (+ (- 1) ~j~0) 0) (<= (+ ~i~0 376) (+ (* ~cur~0 3) (* ~prev~0 2) (* 2 ~j~0))) (<= 377 (+ (* ~cur~0 3) (* ~prev~0 2)))), 13512#(and (<= (+ ~i~0 376) (+ (* ~prev~0 89) (* 2 ~j~0) (* ~cur~0 144))) (<= 377 (+ (* ~prev~0 89) (* ~cur~0 144))) (= (+ (- 1) ~j~0) 0)), 13526#(and (<= (+ ~i~0 376) (+ (* ~cur~0 377) (* 233 ~prev~0))) (= ~j~0 1) (<= 377 (+ (* ~cur~0 377) (* 233 ~prev~0)))), 13519#(and (<= 377 (+ (* ~cur~0 21) (* ~prev~0 13))) (= ~j~0 1) (<= (+ ~i~0 376) (+ (* ~cur~0 21) (* ~prev~0 13) ~j~0))), 13509#(and (<= 377 (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ ~i~0 376) (+ (* 2 ~j~0) (* ~cur~0 34) (* ~prev~0 21))) (= (+ (- 1) ~j~0) 0)), 13514#(and (= ~j~0 1) (<= (+ ~i~0 376) (+ (* ~cur~0 3) (* ~prev~0 2) ~j~0)) (<= 377 (+ (* ~cur~0 3) (* ~prev~0 2))))] [2022-03-15 17:27:24,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 17:27:24,497 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:27:24,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 17:27:24,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=6070, Unknown=16, NotChecked=0, Total=6642 [2022-03-15 17:27:24,500 INFO L87 Difference]: Start difference. First operand 440 states and 1308 transitions. Second operand has 48 states, 47 states have (on average 2.1914893617021276) internal successors, (103), 47 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:27:35,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:27:35,172 INFO L93 Difference]: Finished difference Result 2722 states and 7788 transitions. [2022-03-15 17:27:35,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2022-03-15 17:27:35,174 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.1914893617021276) internal successors, (103), 47 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-03-15 17:27:35,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:27:35,183 INFO L225 Difference]: With dead ends: 2722 [2022-03-15 17:27:35,183 INFO L226 Difference]: Without dead ends: 2692 [2022-03-15 17:27:35,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 19 SyntacticMatches, 13 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8342 ImplicationChecksByTransitivity, 61.7s TimeCoverageRelationStatistics Valid=5999, Invalid=19425, Unknown=16, NotChecked=0, Total=25440 [2022-03-15 17:27:35,185 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 715 mSDsluCounter, 1986 mSDsCounter, 0 mSdLazyCounter, 3676 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 3676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-03-15 17:27:35,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [715 Valid, 0 Invalid, 4034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 3676 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-03-15 17:27:35,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2022-03-15 17:27:35,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 490. [2022-03-15 17:27:35,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 3.0408997955010224) internal successors, (1487), 489 states have internal predecessors, (1487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:27:35,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1487 transitions. [2022-03-15 17:27:35,207 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1487 transitions. Word has length 23 [2022-03-15 17:27:35,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:27:35,207 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 1487 transitions. [2022-03-15 17:27:35,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.1914893617021276) internal successors, (103), 47 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:27:35,207 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1487 transitions. [2022-03-15 17:27:35,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 17:27:35,208 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:27:35,208 INFO L514 BasicCegarLoop]: trace histogram [14, 3, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:27:35,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-15 17:27:35,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:27:35,430 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:27:35,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:27:35,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1567151602, now seen corresponding path program 3 times [2022-03-15 17:27:35,432 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:27:35,432 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669763950] [2022-03-15 17:27:35,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:27:35,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:27:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:27:35,910 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:27:35,910 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:27:35,910 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669763950] [2022-03-15 17:27:35,910 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669763950] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:27:35,911 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405363563] [2022-03-15 17:27:35,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 17:27:35,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:27:35,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:27:35,916 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) [2022-03-15 17:27:35,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-15 17:27:35,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-03-15 17:27:35,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:27:35,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-15 17:27:35,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:27:37,058 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 78 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:27:37,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:29:45,208 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:29:45,208 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405363563] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:29:45,208 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:29:45,208 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 54 [2022-03-15 17:29:45,208 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1057029603] [2022-03-15 17:29:45,208 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:29:45,210 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:29:45,220 INFO L252 McrAutomatonBuilder]: Finished intersection with 85 states and 144 transitions. [2022-03-15 17:29:45,220 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:29:52,675 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 42 new interpolants: [17587#(and (<= (+ ~j~0 373 (* 2 ~i~0)) (+ ~prev~0 ~cur~0)) (<= (+ ~i~0 376) (+ ~prev~0 ~cur~0))), 17615#(and (<= (+ ~j~0 373 (* 2 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ ~i~0 376) (+ (* ~prev~0 55) (* ~cur~0 89)))), 17618#(and (<= (+ ~j~0 373 (* 3 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ ~i~0 376) (+ (* ~prev~0 55) (* ~cur~0 89)))), 17586#(and (<= (+ ~j~0 373 (* 2 ~i~0)) ~cur~0) (<= (+ ~i~0 376) ~cur~0)), 17595#(and (<= (+ ~i~0 376) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ ~j~0 373 (* 3 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2)))), 17591#(and (<= (+ ~i~0 376) ~prev~0) (<= (+ ~j~0 373 (* 3 ~i~0)) ~prev~0)), 17617#(and (<= (+ ~j~0 373 (* 2 ~i~0)) (+ (* 233 ~cur~0) (* ~prev~0 144))) (<= (+ ~i~0 376) (+ (* 233 ~cur~0) (* ~prev~0 144)))), 17598#(and (<= (+ ~j~0 ~i~0 373) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ ~i~0 376) (+ (* ~prev~0 8) (* ~cur~0 13)))), 17596#(and (<= (+ ~j~0 373 (* 3 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ ~i~0 376) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 17613#(and (<= (+ ~i~0 376) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ ~j~0 ~i~0 373) (+ (* ~prev~0 89) (* ~cur~0 144)))), 17610#(and (<= (+ ~j~0 373 (* 3 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ ~i~0 376) (+ (* ~cur~0 34) (* ~prev~0 21)))), 17611#(and (<= (+ ~i~0 376) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ ~j~0 373 (* 3 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34)))), 17616#(and (<= (+ ~j~0 373 (* 2 ~i~0)) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ ~i~0 376) (+ (* ~prev~0 89) (* ~cur~0 144)))), 17602#(and (<= (+ ~j~0 373 (* 2 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ ~i~0 376) (+ (* ~cur~0 21) (* ~prev~0 13)))), 17585#(and (<= (+ ~i~0 376) ~prev~0) (<= (+ ~j~0 373 (* 2 ~i~0)) ~prev~0)), 17606#(and (<= (+ ~i~0 376) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ ~j~0 373 (* 2 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34)))), 17579#(and (<= (+ ~i~0 376) ~prev~0) (<= (+ ~j~0 ~i~0 373) ~prev~0)), 17594#(and (<= (+ ~j~0 373 (* 3 ~i~0)) (+ ~prev~0 (* ~cur~0 2))) (<= (+ ~i~0 376) (+ ~prev~0 (* ~cur~0 2)))), 17608#(and (<= (+ ~j~0 373 (* 3 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ ~i~0 376) (+ (* ~prev~0 8) (* ~cur~0 13)))), 17612#(and (<= (+ ~j~0 ~i~0 373) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ ~i~0 376) (+ (* ~prev~0 55) (* ~cur~0 89)))), 17584#(and (<= (+ ~i~0 376) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ ~j~0 ~i~0 373) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 17580#(and (<= (+ ~i~0 376) ~cur~0) (<= (+ ~j~0 ~i~0 373) ~cur~0)), 17589#(and (<= (+ ~i~0 376) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ ~j~0 373 (* 2 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2)))), 17592#(and (<= (+ ~j~0 373 (* 3 ~i~0)) ~cur~0) (<= (+ ~i~0 376) ~cur~0)), 17614#(and (<= (+ ~j~0 ~i~0 373) (+ (* 233 ~cur~0) (* ~prev~0 144))) (<= (+ ~i~0 376) (+ (* 233 ~cur~0) (* ~prev~0 144)))), 17597#(and (<= (+ ~i~0 376) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ ~j~0 ~i~0 373) (+ (* ~prev~0 5) (* ~cur~0 8)))), 17601#(and (<= (+ ~i~0 376) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ ~j~0 373 (* 2 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13)))), 17581#(and (<= (+ ~i~0 376) (+ ~prev~0 ~cur~0)) (<= (+ ~j~0 ~i~0 373) (+ ~prev~0 ~cur~0))), 17603#(and (<= (+ ~j~0 ~i~0 373) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ ~i~0 376) (+ (* ~cur~0 34) (* ~prev~0 21)))), 17619#(and (<= (+ ~i~0 376) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ ~j~0 373 (* 3 ~i~0)) (+ (* ~prev~0 89) (* ~cur~0 144)))), 17600#(and (<= (+ ~i~0 376) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ ~j~0 373 (* 2 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8)))), 17607#(and (<= (+ ~i~0 376) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ ~j~0 373 (* 3 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8)))), 17588#(and (<= (+ ~j~0 373 (* 2 ~i~0)) (+ ~prev~0 (* ~cur~0 2))) (<= (+ ~i~0 376) (+ ~prev~0 (* ~cur~0 2)))), 17593#(and (<= (+ ~j~0 373 (* 3 ~i~0)) (+ ~prev~0 ~cur~0)) (<= (+ ~i~0 376) (+ ~prev~0 ~cur~0))), 17599#(and (<= (+ ~i~0 376) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ ~j~0 ~i~0 373) (+ (* ~cur~0 21) (* ~prev~0 13)))), 17609#(and (<= (+ ~j~0 373 (* 3 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ ~i~0 376) (+ (* ~cur~0 21) (* ~prev~0 13)))), 17604#(and (<= (+ ~i~0 376) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ ~j~0 373 (* 2 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21)))), 17582#(and (<= (+ ~i~0 376) (+ ~prev~0 (* ~cur~0 2))) (<= (+ ~j~0 ~i~0 373) (+ ~prev~0 (* ~cur~0 2)))), 17620#(and (<= (+ ~j~0 373 (* 3 ~i~0)) (+ (* 233 ~cur~0) (* ~prev~0 144))) (<= (+ ~i~0 376) (+ (* 233 ~cur~0) (* ~prev~0 144)))), 17590#(and (<= (+ ~j~0 373 (* 2 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ ~i~0 376) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 17583#(and (<= (+ ~i~0 376) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ ~j~0 ~i~0 373) (+ (* ~cur~0 3) (* ~prev~0 2)))), 17605#(and (<= (+ ~i~0 376) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ ~j~0 ~i~0 373) (+ (* ~cur~0 55) (* ~prev~0 34))))] [2022-03-15 17:29:52,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-03-15 17:29:52,676 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:29:52,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-03-15 17:29:52,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=838, Invalid=8632, Unknown=36, NotChecked=0, Total=9506 [2022-03-15 17:29:52,676 INFO L87 Difference]: Start difference. First operand 490 states and 1487 transitions. Second operand has 62 states, 61 states have (on average 2.0491803278688523) internal successors, (125), 61 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:30:06,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:30:06,145 INFO L93 Difference]: Finished difference Result 666 states and 1972 transitions. [2022-03-15 17:30:06,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-03-15 17:30:06,146 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 2.0491803278688523) internal successors, (125), 61 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-03-15 17:30:06,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:30:06,148 INFO L225 Difference]: With dead ends: 666 [2022-03-15 17:30:06,148 INFO L226 Difference]: Without dead ends: 650 [2022-03-15 17:30:06,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4174 ImplicationChecksByTransitivity, 120.8s TimeCoverageRelationStatistics Valid=1359, Invalid=18911, Unknown=36, NotChecked=0, Total=20306 [2022-03-15 17:30:06,150 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 504 mSDsluCounter, 3678 mSDsCounter, 0 mSdLazyCounter, 6486 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 504 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:30:06,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [504 Valid, 0 Invalid, 6489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6486 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-03-15 17:30:06,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2022-03-15 17:30:06,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 538. [2022-03-15 17:30:06,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 537 states have (on average 3.091247672253259) internal successors, (1660), 537 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:30:06,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1660 transitions. [2022-03-15 17:30:06,171 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1660 transitions. Word has length 24 [2022-03-15 17:30:06,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:30:06,178 INFO L470 AbstractCegarLoop]: Abstraction has 538 states and 1660 transitions. [2022-03-15 17:30:06,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 2.0491803278688523) internal successors, (125), 61 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:30:06,178 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1660 transitions. [2022-03-15 17:30:06,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 17:30:06,179 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:30:06,179 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:30:06,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-15 17:30:06,391 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,SelfDestructingSolverStorable20 [2022-03-15 17:30:06,391 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:30:06,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:30:06,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1885098764, now seen corresponding path program 1 times [2022-03-15 17:30:06,394 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:30:06,394 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634609289] [2022-03-15 17:30:06,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:30:06,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:30:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:30:06,995 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:30:06,995 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:30:06,995 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634609289] [2022-03-15 17:30:06,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634609289] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:30:06,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794145228] [2022-03-15 17:30:06,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:30:06,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:30:06,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:30:06,997 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) [2022-03-15 17:30:06,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-15 17:30:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:30:07,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 48 conjunts are in the unsatisfiable core [2022-03-15 17:30:07,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:30:08,244 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 78 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:30:08,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:31:27,376 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:31:27,377 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794145228] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:31:27,380 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:31:27,381 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 51 [2022-03-15 17:31:27,381 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1482735092] [2022-03-15 17:31:27,381 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:31:27,382 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:31:27,399 INFO L252 McrAutomatonBuilder]: Finished intersection with 119 states and 242 transitions. [2022-03-15 17:31:27,399 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:31:31,834 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 30 new interpolants: [19663#(and (<= (+ ~j~0 375) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ ~i~0 374) (+ (* ~prev~0 55) (* ~cur~0 89)))), 19658#(and (<= (+ ~j~0 ~i~0 375) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ ~j~0 374 (* 2 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13)))), 19666#(and (<= (+ ~j~0 375) (+ (* ~cur~0 377) (* 233 ~prev~0))) (<= (+ ~i~0 374) (+ (* ~cur~0 377) (* 233 ~prev~0)))), 19660#(and (<= (+ ~j~0 ~i~0 375) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ ~j~0 374 (* 2 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13)))), 19645#(and (<= (+ ~i~0 374) (+ ~prev~0 ~cur~0)) (<= (+ ~j~0 375) (+ ~prev~0 ~cur~0))), 19672#(and (<= (+ ~j~0 ~i~0 375) (+ (* 233 ~cur~0) (* ~prev~0 144))) (<= (+ ~j~0 374 (* 2 ~i~0)) (+ (* 233 ~cur~0) (* ~prev~0 144)))), 19667#(and (<= (+ ~j~0 375) (+ (* ~cur~0 377) (* 233 ~prev~0))) (<= (+ ~j~0 ~i~0 374) (+ (* ~cur~0 377) (* 233 ~prev~0)))), 19654#(and (<= (+ ~j~0 ~i~0 375) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ ~j~0 374 (* 2 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 19661#(and (<= (+ ~j~0 375) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ ~i~0 374) (+ (* ~cur~0 34) (* ~prev~0 21)))), 19650#(and (<= (+ ~j~0 374 (* 2 ~i~0)) (+ ~prev~0 (* ~cur~0 2))) (<= (+ ~j~0 ~i~0 375) (+ ~prev~0 (* ~cur~0 2)))), 19648#(and (<= (+ ~j~0 ~i~0 375) (+ ~prev~0 ~cur~0)) (<= (+ ~j~0 374 (* 2 ~i~0)) (+ ~prev~0 ~cur~0))), 19646#(and (<= (+ ~j~0 374 (* 2 ~i~0)) ~prev~0) (<= (+ ~j~0 ~i~0 375) ~prev~0)), 19655#(and (<= (+ ~i~0 374) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ ~j~0 375) (+ (* ~prev~0 5) (* ~cur~0 8)))), 19653#(and (<= (+ ~j~0 ~i~0 375) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ ~j~0 374 (* 2 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2)))), 19664#(and (<= (+ ~j~0 375) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ ~i~0 374) (+ (* ~prev~0 89) (* ~cur~0 144)))), 19673#(and (<= (+ ~j~0 ~i~0 375) (+ (* ~cur~0 377) (* 233 ~prev~0))) (<= (+ ~j~0 374 (* 2 ~i~0)) (+ (* ~cur~0 377) (* 233 ~prev~0)))), 19651#(and (<= (+ ~j~0 375) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ ~i~0 374) (+ (* ~cur~0 3) (* ~prev~0 2)))), 19652#(and (<= (+ ~i~0 374) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ ~j~0 375) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 19668#(and (<= (+ ~j~0 374 (* 2 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ ~j~0 ~i~0 375) (+ (* ~cur~0 34) (* ~prev~0 21)))), 19647#(and (<= (+ ~j~0 ~i~0 375) ~cur~0) (<= (+ ~j~0 374 (* 2 ~i~0)) ~cur~0)), 19656#(and (<= (+ ~j~0 ~i~0 375) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ ~j~0 374 (* 2 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8)))), 19657#(and (<= (+ ~j~0 375) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ ~i~0 374) (+ (* ~prev~0 8) (* ~cur~0 13)))), 19659#(and (<= (+ ~i~0 374) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ ~j~0 375) (+ (* ~cur~0 21) (* ~prev~0 13)))), 19662#(and (<= (+ ~j~0 375) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ ~i~0 374) (+ (* ~cur~0 55) (* ~prev~0 34)))), 19669#(and (<= (+ ~j~0 374 (* 2 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ ~j~0 ~i~0 375) (+ (* ~cur~0 55) (* ~prev~0 34)))), 19671#(and (<= (+ ~j~0 ~i~0 375) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ ~j~0 374 (* 2 ~i~0)) (+ (* ~prev~0 89) (* ~cur~0 144)))), 19644#(and (<= (+ ~j~0 375) ~cur~0) (<= (+ ~i~0 374) ~cur~0)), 19670#(and (<= (+ ~j~0 374 (* 2 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ ~j~0 ~i~0 375) (+ (* ~prev~0 55) (* ~cur~0 89)))), 19665#(and (<= (+ ~j~0 375) (+ (* 233 ~cur~0) (* ~prev~0 144))) (<= (+ ~i~0 374) (+ (* 233 ~cur~0) (* ~prev~0 144)))), 19649#(and (<= (+ ~j~0 375) (+ ~prev~0 (* ~cur~0 2))) (<= (+ ~i~0 374) (+ ~prev~0 (* ~cur~0 2))))] [2022-03-15 17:31:31,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-03-15 17:31:31,835 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:31:31,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-03-15 17:31:31,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=756, Invalid=6032, Unknown=18, NotChecked=0, Total=6806 [2022-03-15 17:31:31,835 INFO L87 Difference]: Start difference. First operand 538 states and 1660 transitions. Second operand has 49 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 48 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:32:08,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:32:08,182 INFO L93 Difference]: Finished difference Result 2270 states and 6631 transitions. [2022-03-15 17:32:08,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2022-03-15 17:32:08,183 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 48 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-03-15 17:32:08,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:32:08,191 INFO L225 Difference]: With dead ends: 2270 [2022-03-15 17:32:08,191 INFO L226 Difference]: Without dead ends: 2204 [2022-03-15 17:32:08,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 337 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21565 ImplicationChecksByTransitivity, 89.0s TimeCoverageRelationStatistics Valid=3837, Invalid=65051, Unknown=18, NotChecked=0, Total=68906 [2022-03-15 17:32:08,195 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 756 mSDsluCounter, 6640 mSDsCounter, 0 mSdLazyCounter, 13397 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 13397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:32:08,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 0 Invalid, 13637 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [240 Valid, 13397 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2022-03-15 17:32:08,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2022-03-15 17:32:08,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 554. [2022-03-15 17:32:08,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 553 states have (on average 3.057866184448463) internal successors, (1691), 553 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:32:08,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 1691 transitions. [2022-03-15 17:32:08,212 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 1691 transitions. Word has length 24 [2022-03-15 17:32:08,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:32:08,213 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 1691 transitions. [2022-03-15 17:32:08,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 2.7708333333333335) internal successors, (133), 48 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:32:08,214 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 1691 transitions. [2022-03-15 17:32:08,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 17:32:08,218 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:32:08,218 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:32:08,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-15 17:32:08,427 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,SelfDestructingSolverStorable21 [2022-03-15 17:32:08,427 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:32:08,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:32:08,428 INFO L85 PathProgramCache]: Analyzing trace with hash 1411038448, now seen corresponding path program 2 times [2022-03-15 17:32:08,429 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:32:08,429 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022858409] [2022-03-15 17:32:08,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:32:08,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:32:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:32:08,996 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:32:08,996 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:32:08,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022858409] [2022-03-15 17:32:08,997 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022858409] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:32:08,997 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351861982] [2022-03-15 17:32:08,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:32:08,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:32:08,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:32:08,998 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) [2022-03-15 17:32:08,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-15 17:32:09,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 17:32:09,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:32:09,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 48 conjunts are in the unsatisfiable core [2022-03-15 17:32:09,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:32:10,219 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 78 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:32:10,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:33:02,596 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:33:02,597 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351861982] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:33:02,597 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:33:02,597 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 51 [2022-03-15 17:33:02,597 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2140045713] [2022-03-15 17:33:02,597 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:33:02,599 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:33:02,613 INFO L252 McrAutomatonBuilder]: Finished intersection with 121 states and 246 transitions. [2022-03-15 17:33:02,614 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:33:07,125 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 29 new interpolants: [23623#(and (= ~j~0 1) (<= (+ ~j~0 ~i~0 374) (+ (* ~prev~0 8) (* ~cur~0 13)))), 23628#(and (<= (+ ~i~0 375) (+ (* ~prev~0 89) (* ~cur~0 144))) (= ~j~0 1)), 23603#(and (<= (+ ~i~0 375) ~cur~0) (<= (+ ~j~0 374) ~cur~0)), 23613#(and (<= (+ ~i~0 375) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ ~j~0 374) (+ (* ~cur~0 34) (* ~prev~0 21)))), 23608#(and (<= (+ ~j~0 374) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ ~i~0 375) (+ (* ~cur~0 3) (* ~prev~0 2)))), 23606#(and (= ~j~0 1) (<= (+ ~i~0 375) (+ ~prev~0 ~cur~0))), 23630#(and (= ~j~0 1) (<= (+ ~j~0 ~i~0 374) (+ (* ~cur~0 377) (* 233 ~prev~0)))), 23610#(and (<= (+ ~j~0 374) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ ~i~0 375) (+ (* ~prev~0 5) (* ~cur~0 8)))), 23618#(and (<= (+ ~j~0 374) (+ (* ~cur~0 377) (* 233 ~prev~0))) (<= (+ ~i~0 375) (+ (* ~cur~0 377) (* 233 ~prev~0)))), 23615#(and (<= (+ ~i~0 375) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ ~j~0 374) (+ (* ~prev~0 55) (* ~cur~0 89)))), 23604#(and (= ~j~0 1) (<= (+ ~j~0 ~i~0 374) ~cur~0)), 23605#(and (<= (+ ~j~0 374) (+ ~prev~0 ~cur~0)) (<= (+ ~i~0 375) (+ ~prev~0 ~cur~0))), 23622#(and (= ~j~0 1) (<= (+ ~i~0 375) (+ (* ~prev~0 5) (* ~cur~0 8)))), 23612#(and (<= (+ ~i~0 375) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ ~j~0 374) (+ (* ~cur~0 21) (* ~prev~0 13)))), 23607#(and (<= (+ ~j~0 374) (+ ~prev~0 (* ~cur~0 2))) (<= (+ ~i~0 375) (+ ~prev~0 (* ~cur~0 2)))), 23616#(and (<= (+ ~i~0 375) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ ~j~0 374) (+ (* ~prev~0 89) (* ~cur~0 144)))), 23626#(and (<= (+ ~j~0 ~i~0 374) (+ (* ~cur~0 55) (* ~prev~0 34))) (= ~j~0 1)), 23614#(and (<= (+ ~i~0 375) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ ~j~0 374) (+ (* ~cur~0 55) (* ~prev~0 34)))), 23609#(and (<= (+ ~j~0 374) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ ~i~0 375) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 23625#(and (<= (+ ~i~0 375) (+ (* ~cur~0 34) (* ~prev~0 21))) (= ~j~0 1)), 23631#(and (<= (+ ~i~0 376) (+ (* ~cur~0 377) (* 233 ~prev~0))) (= ~j~0 1)), 23617#(and (<= (+ ~i~0 375) (+ (* 233 ~cur~0) (* ~prev~0 144))) (<= (+ ~j~0 374) (+ (* 233 ~cur~0) (* ~prev~0 144)))), 23620#(and (= ~j~0 1) (<= (+ ~j~0 ~i~0 374) (+ (* ~cur~0 3) (* ~prev~0 2)))), 23619#(and (= ~j~0 1) (<= (+ ~i~0 375) (+ ~prev~0 (* ~cur~0 2)))), 23624#(and (= ~j~0 1) (<= (+ ~j~0 ~i~0 374) (+ (* ~cur~0 21) (* ~prev~0 13)))), 23611#(and (<= (+ ~i~0 375) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ ~j~0 374) (+ (* ~prev~0 8) (* ~cur~0 13)))), 23629#(and (= ~j~0 1) (<= (+ ~j~0 ~i~0 374) (+ (* 233 ~cur~0) (* ~prev~0 144)))), 23621#(and (= ~j~0 1) (<= (+ ~j~0 ~i~0 374) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 23627#(and (= ~j~0 1) (<= (+ ~j~0 ~i~0 374) (+ (* ~prev~0 55) (* ~cur~0 89))))] [2022-03-15 17:33:07,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-03-15 17:33:07,125 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:33:07,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-03-15 17:33:07,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=602, Invalid=6029, Unknown=11, NotChecked=0, Total=6642 [2022-03-15 17:33:07,126 INFO L87 Difference]: Start difference. First operand 554 states and 1691 transitions. Second operand has 48 states, 47 states have (on average 2.8085106382978724) internal successors, (132), 47 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:33:45,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:33:45,163 INFO L93 Difference]: Finished difference Result 5325 states and 15339 transitions. [2022-03-15 17:33:45,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2022-03-15 17:33:45,163 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.8085106382978724) internal successors, (132), 47 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-03-15 17:33:45,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:33:45,182 INFO L225 Difference]: With dead ends: 5325 [2022-03-15 17:33:45,182 INFO L226 Difference]: Without dead ends: 5204 [2022-03-15 17:33:45,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 38 SyntacticMatches, 41 SemanticMatches, 254 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20012 ImplicationChecksByTransitivity, 66.9s TimeCoverageRelationStatistics Valid=8969, Invalid=56300, Unknown=11, NotChecked=0, Total=65280 [2022-03-15 17:33:45,185 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 510 mSDsluCounter, 10011 mSDsCounter, 0 mSdLazyCounter, 18080 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 18080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-03-15 17:33:45,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 0 Invalid, 18352 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [272 Valid, 18080 Invalid, 0 Unknown, 0 Unchecked, 15.6s Time] [2022-03-15 17:33:45,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5204 states. [2022-03-15 17:33:45,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5204 to 572. [2022-03-15 17:33:45,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 3.0192644483362523) internal successors, (1724), 571 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:33:45,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 1724 transitions. [2022-03-15 17:33:45,213 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 1724 transitions. Word has length 24 [2022-03-15 17:33:45,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:33:45,214 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 1724 transitions. [2022-03-15 17:33:45,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.8085106382978724) internal successors, (132), 47 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:33:45,214 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 1724 transitions. [2022-03-15 17:33:45,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 17:33:45,215 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:33:45,215 INFO L514 BasicCegarLoop]: trace histogram [14, 3, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:33:45,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-15 17:33:45,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:33:45,431 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:33:45,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:33:45,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1110056484, now seen corresponding path program 3 times [2022-03-15 17:33:45,433 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:33:45,433 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517733965] [2022-03-15 17:33:45,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:33:45,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:33:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:33:45,955 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:33:45,955 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:33:45,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517733965] [2022-03-15 17:33:45,955 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517733965] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:33:45,955 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861405364] [2022-03-15 17:33:45,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 17:33:45,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:33:45,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:33:45,957 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) [2022-03-15 17:33:45,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-15 17:33:46,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2022-03-15 17:33:46,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:33:46,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-15 17:33:46,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:33:47,006 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 78 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:33:47,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:34:49,727 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:34:49,727 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861405364] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:34:49,727 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:34:49,727 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 54 [2022-03-15 17:34:49,727 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1260481458] [2022-03-15 17:34:49,727 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:34:49,729 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:34:49,747 INFO L252 McrAutomatonBuilder]: Finished intersection with 93 states and 160 transitions. [2022-03-15 17:34:49,747 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:34:55,088 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 43 new interpolants: [30677#(and (<= (+ ~i~0 376) (+ ~j~0 (* ~prev~0 55) (* ~cur~0 89))) (= ~j~0 1) (<= 377 (+ (* ~prev~0 55) (* ~cur~0 89)))), 30670#(and (= ~j~0 1) (<= 377 (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ ~i~0 376) (+ (* 3 ~j~0) (* ~cur~0 55) (* ~prev~0 34)))), 30643#(and (= (+ (- 1) ~j~0) 0) (<= 377 ~cur~0) (<= (+ ~i~0 376) (+ ~cur~0 (* 3 ~j~0)))), 30656#(and (<= (+ ~i~0 376) (+ (* 5 ~cur~0) (* 2 ~j~0) (* ~prev~0 3))) (<= 377 (+ (* 5 ~cur~0) (* ~prev~0 3))) (= ~j~0 1)), 30684#(and (= ~j~0 1) (<= 377 (+ (* ~cur~0 377) (* 233 ~prev~0))) (<= (+ ~i~0 376) (+ (* ~cur~0 377) ~j~0 (* 233 ~prev~0)))), 30672#(and (= ~j~0 1) (<= (+ ~i~0 376) (+ (* 2 ~j~0) (* ~cur~0 55) (* ~prev~0 34))) (<= 377 (+ (* ~cur~0 55) (* ~prev~0 34)))), 30682#(and (<= (+ ~i~0 376) (+ (* 3 ~j~0) (* ~cur~0 377) (* 233 ~prev~0))) (= ~j~0 1) (<= 377 (+ (* ~cur~0 377) (* 233 ~prev~0)))), 30650#(and (<= 377 (+ (* ~cur~0 21) (* ~prev~0 13))) (= ~j~0 1) (<= (+ ~i~0 376) (+ (* ~cur~0 21) (* ~prev~0 13) (* 3 ~j~0)))), 30673#(and (<= (+ ~i~0 376) (+ (* 2 ~j~0) (* ~prev~0 55) (* ~cur~0 89))) (= ~j~0 1) (<= 377 (+ (* ~prev~0 55) (* ~cur~0 89)))), 30681#(and (<= (+ ~i~0 376) (+ (* 233 ~cur~0) ~j~0 (* ~prev~0 144))) (= ~j~0 1) (<= 377 (+ (* 233 ~cur~0) (* ~prev~0 144)))), 30666#(and (= ~j~0 1) (<= (+ ~i~0 376) (+ (* ~prev~0 5) (* ~cur~0 8) ~j~0)) (<= 377 (+ (* ~prev~0 5) (* ~cur~0 8)))), 30644#(and (<= 377 (+ ~prev~0 ~cur~0)) (= (+ (- 1) ~j~0) 0) (<= (+ ~i~0 376) (+ ~prev~0 ~cur~0 (* 3 ~j~0)))), 30659#(and (<= 377 (+ (* ~cur~0 21) (* ~prev~0 13))) (= ~j~0 1) (<= (+ ~i~0 376) (+ (* ~cur~0 21) (* ~prev~0 13) (* 2 ~j~0)))), 30675#(and (<= (+ ~i~0 376) (+ (* ~prev~0 89) (* 2 ~j~0) (* ~cur~0 144))) (<= 377 (+ (* ~prev~0 89) (* ~cur~0 144))) (= ~j~0 1)), 30646#(and (= ~j~0 1) (<= (+ ~i~0 376) (+ (* ~cur~0 3) (* ~prev~0 2) (* 3 ~j~0))) (<= 377 (+ (* ~cur~0 3) (* ~prev~0 2)))), 30665#(and (<= 377 (+ (* 5 ~cur~0) (* ~prev~0 3))) (= ~j~0 1) (<= (+ ~i~0 376) (+ (* 5 ~cur~0) ~j~0 (* ~prev~0 3)))), 30649#(and (= ~j~0 1) (<= 377 (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ ~i~0 376) (+ (* 3 ~j~0) (* ~prev~0 8) (* ~cur~0 13)))), 30674#(and (<= 377 (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ ~i~0 376) (+ (* ~prev~0 89) (* 3 ~j~0) (* ~cur~0 144))) (= ~j~0 1)), 30679#(and (= ~j~0 1) (<= 377 (+ (* 233 ~cur~0) (* ~prev~0 144))) (<= (+ ~i~0 376) (+ (* 233 ~cur~0) (* 3 ~j~0) (* ~prev~0 144)))), 30655#(and (= ~j~0 1) (<= (+ ~i~0 376) (+ (* ~cur~0 3) (* ~prev~0 2) (* 2 ~j~0))) (<= 377 (+ (* ~cur~0 3) (* ~prev~0 2)))), 30683#(and (= ~j~0 1) (<= 377 (+ (* ~cur~0 377) (* 233 ~prev~0))) (<= (+ ~i~0 376) (+ (* 2 ~j~0) (* ~cur~0 377) (* 233 ~prev~0)))), 30645#(and (= ~j~0 1) (<= (+ ~i~0 376) (+ ~prev~0 (* 3 ~j~0) (* ~cur~0 2))) (<= 377 (+ ~prev~0 (* ~cur~0 2)))), 30669#(and (<= 377 (+ (* ~cur~0 34) (* ~prev~0 21))) (= ~j~0 1) (<= (+ ~i~0 376) (+ ~j~0 (* ~cur~0 34) (* ~prev~0 21)))), 30657#(and (<= (+ ~i~0 376) (+ (* ~prev~0 5) (* ~cur~0 8) (* 2 ~j~0))) (= ~j~0 1) (<= 377 (+ (* ~prev~0 5) (* ~cur~0 8)))), 30658#(and (= ~j~0 1) (<= 377 (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ ~i~0 376) (+ (* 2 ~j~0) (* ~prev~0 8) (* ~cur~0 13)))), 30652#(and (= ~j~0 1) (<= (+ ~i~0 376) (+ ~cur~0 (* 2 ~j~0))) (<= 377 ~cur~0)), 30678#(and (<= (+ ~i~0 376) (+ (* ~prev~0 89) ~j~0 (* ~cur~0 144))) (<= 377 (+ (* ~prev~0 89) (* ~cur~0 144))) (= ~j~0 1)), 30661#(and (<= (+ ~i~0 376) (+ ~cur~0 ~j~0)) (= ~j~0 1) (<= 377 ~cur~0)), 30664#(and (= ~j~0 1) (<= (+ ~i~0 376) (+ (* ~cur~0 3) (* ~prev~0 2) ~j~0)) (<= 377 (+ (* ~cur~0 3) (* ~prev~0 2)))), 30667#(and (<= (+ ~i~0 376) (+ (* ~prev~0 8) ~j~0 (* ~cur~0 13))) (= ~j~0 1) (<= 377 (+ (* ~prev~0 8) (* ~cur~0 13)))), 30663#(and (= ~j~0 1) (<= 377 (+ ~prev~0 (* ~cur~0 2))) (<= (+ ~i~0 376) (+ ~prev~0 ~j~0 (* ~cur~0 2)))), 30671#(and (= ~j~0 1) (<= (+ ~i~0 376) (+ (* 3 ~j~0) (* ~prev~0 55) (* ~cur~0 89))) (<= 377 (+ (* ~prev~0 55) (* ~cur~0 89)))), 30660#(and (<= 377 (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ ~i~0 376) (+ (* 2 ~j~0) (* ~cur~0 34) (* ~prev~0 21))) (= ~j~0 1)), 30685#(and (<= (+ ~i~0 376) (+ (* ~cur~0 377) (* 233 ~prev~0))) (= ~j~0 1) (<= 377 (+ (* ~cur~0 377) (* 233 ~prev~0)))), 30647#(and (<= 377 (+ (* 5 ~cur~0) (* ~prev~0 3))) (= ~j~0 1) (<= (+ ~i~0 376) (+ (* 5 ~cur~0) (* 3 ~j~0) (* ~prev~0 3)))), 30648#(and (= ~j~0 1) (<= (+ ~i~0 376) (+ (* ~prev~0 5) (* ~cur~0 8) (* 3 ~j~0))) (<= 377 (+ (* ~prev~0 5) (* ~cur~0 8)))), 30680#(and (<= (+ ~i~0 376) (+ (* 233 ~cur~0) (* 2 ~j~0) (* ~prev~0 144))) (= ~j~0 1) (<= 377 (+ (* 233 ~cur~0) (* ~prev~0 144)))), 30653#(and (<= (+ ~i~0 376) (+ ~prev~0 ~cur~0 (* 2 ~j~0))) (= ~j~0 1) (<= 377 (+ ~prev~0 ~cur~0))), 30668#(and (<= 377 (+ (* ~cur~0 21) (* ~prev~0 13))) (= ~j~0 1) (<= (+ ~i~0 376) (+ (* ~cur~0 21) (* ~prev~0 13) ~j~0))), 30651#(and (<= (+ ~i~0 376) (+ (* 3 ~j~0) (* ~cur~0 34) (* ~prev~0 21))) (<= 377 (+ (* ~cur~0 34) (* ~prev~0 21))) (= ~j~0 1)), 30676#(and (<= (+ ~i~0 376) (+ ~j~0 (* ~cur~0 55) (* ~prev~0 34))) (= ~j~0 1) (<= 377 (+ (* ~cur~0 55) (* ~prev~0 34)))), 30654#(and (= ~j~0 1) (<= (+ ~i~0 376) (+ ~prev~0 (* 2 ~j~0) (* ~cur~0 2))) (<= 377 (+ ~prev~0 (* ~cur~0 2)))), 30662#(and (= ~j~0 1) (<= 377 (+ ~prev~0 ~cur~0)) (<= (+ ~i~0 376) (+ ~prev~0 ~cur~0 ~j~0)))] [2022-03-15 17:34:55,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-03-15 17:34:55,088 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:34:55,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-03-15 17:34:55,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=9019, Unknown=15, NotChecked=0, Total=9702 [2022-03-15 17:34:55,090 INFO L87 Difference]: Start difference. First operand 572 states and 1724 transitions. Second operand has 63 states, 62 states have (on average 2.1774193548387095) internal successors, (135), 62 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Received shutdown request... [2022-03-15 17:35:08,622 WARN L244 SmtUtils]: Removed 18 from assertion stack [2022-03-15 17:35:08,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2022-03-15 17:35:08,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 22 SyntacticMatches, 13 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10989 ImplicationChecksByTransitivity, 62.8s TimeCoverageRelationStatistics Valid=8506, Invalid=26635, Unknown=15, NotChecked=0, Total=35156 [2022-03-15 17:35:08,624 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 936 mSDsluCounter, 2218 mSDsCounter, 0 mSdLazyCounter, 4083 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 4083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-03-15 17:35:08,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [936 Valid, 0 Invalid, 4442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 4083 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-03-15 17:35:08,625 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-15 17:35:08,638 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 17:35:08,638 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 [2022-03-15 17:35:08,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-03-15 17:35:08,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:35:08,833 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (572states) and FLOYD_HOARE automaton (currently 150 states, 63 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 9ms.. [2022-03-15 17:35:08,834 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-15 17:35:08,834 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-15 17:35:08,835 INFO L732 BasicCegarLoop]: Path program histogram: [15, 3, 3, 2, 1] [2022-03-15 17:35:08,837 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 17:35:08,837 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 17:35:08,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 05:35:08 BasicIcfg [2022-03-15 17:35:08,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 17:35:08,840 INFO L158 Benchmark]: Toolchain (without parser) took 875070.50ms. Allocated memory was 224.4MB in the beginning and 445.6MB in the end (delta: 221.2MB). Free memory was 201.1MB in the beginning and 323.2MB in the end (delta: -122.1MB). Peak memory consumption was 99.5MB. Max. memory is 8.0GB. [2022-03-15 17:35:08,840 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 224.4MB. Free memory is still 190.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 17:35:08,840 INFO L158 Benchmark]: CACSL2BoogieTranslator took 384.10ms. Allocated memory was 224.4MB in the beginning and 309.3MB in the end (delta: 84.9MB). Free memory was 200.9MB in the beginning and 277.2MB in the end (delta: -76.3MB). Peak memory consumption was 11.0MB. Max. memory is 8.0GB. [2022-03-15 17:35:08,840 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.11ms. Allocated memory is still 309.3MB. Free memory was 277.2MB in the beginning and 275.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 17:35:08,840 INFO L158 Benchmark]: Boogie Preprocessor took 24.79ms. Allocated memory is still 309.3MB. Free memory was 275.2MB in the beginning and 273.8MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 17:35:08,841 INFO L158 Benchmark]: RCFGBuilder took 264.60ms. Allocated memory is still 309.3MB. Free memory was 273.8MB in the beginning and 261.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-15 17:35:08,841 INFO L158 Benchmark]: TraceAbstraction took 874342.86ms. Allocated memory was 309.3MB in the beginning and 445.6MB in the end (delta: 136.3MB). Free memory was 260.9MB in the beginning and 323.2MB in the end (delta: -62.3MB). Peak memory consumption was 74.9MB. Max. memory is 8.0GB. [2022-03-15 17:35:08,842 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 224.4MB. Free memory is still 190.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 384.10ms. Allocated memory was 224.4MB in the beginning and 309.3MB in the end (delta: 84.9MB). Free memory was 200.9MB in the beginning and 277.2MB in the end (delta: -76.3MB). Peak memory consumption was 11.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.11ms. Allocated memory is still 309.3MB. Free memory was 277.2MB in the beginning and 275.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 24.79ms. Allocated memory is still 309.3MB. Free memory was 275.2MB in the beginning and 273.8MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 264.60ms. Allocated memory is still 309.3MB. Free memory was 273.8MB in the beginning and 261.3MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 874342.86ms. Allocated memory was 309.3MB in the beginning and 445.6MB in the end (delta: 136.3MB). Free memory was 260.9MB in the beginning and 323.2MB in the end (delta: -62.3MB). Peak memory consumption was 74.9MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 96 PlacesBefore, 20 PlacesAfterwards, 96 TransitionsBefore, 16 TransitionsAfterwards, 1870 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 12 ConcurrentYvCompositions, 4 ChoiceCompositions, 92 TotalNumberOfCompositions, 1462 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1325, positive: 1316, positive conditional: 0, positive unconditional: 1316, negative: 9, negative conditional: 0, negative unconditional: 9, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 969, positive: 963, positive conditional: 0, positive unconditional: 963, negative: 6, negative conditional: 0, negative unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1325, positive: 353, positive conditional: 0, positive unconditional: 353, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 969, unknown conditional: 0, unknown unconditional: 969] , Statistics on independence cache: Total cache size (in pairs): 3, Positive cache size: 3, Positive conditional cache size: 0, Positive unconditional cache size: 3, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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: 726]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (572states) and FLOYD_HOARE automaton (currently 150 states, 63 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 9ms.. - TimeoutResultAtElement [Line: 722]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (572states) and FLOYD_HOARE automaton (currently 150 states, 63 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 9ms.. - TimeoutResultAtElement [Line: 721]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was constructing difference of abstraction (572states) and FLOYD_HOARE automaton (currently 150 states, 63 states before enhancement),while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 57 for 9ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 112 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 874.3s, OverallIterations: 24, TraceHistogramMax: 15, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 128.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5902 SdHoareTripleChecker+Valid, 52.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5902 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 47.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32546 mSDsCounter, 1489 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 60044 IncrementalHoareTripleChecker+Invalid, 61533 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1489 mSolverCounterUnsat, 0 mSDtfsCounter, 60044 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2143 GetRequests, 534 SyntacticMatches, 92 SemanticMatches, 1516 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72810 ImplicationChecksByTransitivity, 658.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=572occurred in iteration=23, InterpolantAutomatonStates: 904, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 23 MinimizatonAttempts, 10088 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 702.4s InterpolantComputationTime, 798 NumberOfCodeBlocks, 798 NumberOfCodeBlocksAsserted, 102 NumberOfCheckSat, 1104 ConstructedInterpolants, 127 QuantifiedInterpolants, 25108 SizeOfPredicates, 117 NumberOfNonLiveVariables, 4919 ConjunctsInSsa, 563 ConjunctsInUnsatCore, 69 InterpolantComputations, 2 PerfectInterpolantSequences, 928/4464 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