/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_unsafe-5.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 17:20:32,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 17:20:32,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 17:20:33,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 17:20:33,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 17:20:33,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 17:20:33,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 17:20:33,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 17:20:33,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 17:20:33,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 17:20:33,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 17:20:33,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 17:20:33,033 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 17:20:33,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 17:20:33,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 17:20:33,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 17:20:33,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 17:20:33,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 17:20:33,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 17:20:33,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 17:20:33,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 17:20:33,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 17:20:33,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 17:20:33,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 17:20:33,057 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-15 17:20:33,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-15 17:20:33,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-15 17:20:33,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-15 17:20:33,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-15 17:20:33,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-15 17:20:33,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-15 17:20:33,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-15 17:20:33,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-15 17:20:33,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-15 17:20:33,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-15 17:20:33,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-15 17:20:33,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-15 17:20:33,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-15 17:20:33,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 17:20:33,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 17:20:33,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 17:20:33,067 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 17:20:33,091 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 17:20:33,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 17:20:33,092 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 17:20:33,092 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 17:20:33,093 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 17:20:33,093 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 17:20:33,093 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 17:20:33,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 17:20:33,093 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 17:20:33,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 17:20:33,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 17:20:33,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 17:20:33,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 17:20:33,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 17:20:33,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 17:20:33,094 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 17:20:33,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 17:20:33,094 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 17:20:33,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 17:20:33,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 17:20:33,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 17:20:33,095 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 17:20:33,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 17:20:33,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 17:20:33,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 17:20:33,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 17:20:33,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 17:20:33,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 17:20:33,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 17:20:33,096 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 17:20:33,096 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 17:20:33,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 17:20:33,097 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 17:20:33,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 17:20:33,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 17:20:33,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 17:20:33,300 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 17:20:33,301 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 17:20:33,302 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/fib_unsafe-5.i [2022-03-15 17:20:33,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a144fe94/a8363f0f7b9a447585d9570c22b3f3f4/FLAGc494c6abc [2022-03-15 17:20:33,677 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 17:20:33,678 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/fib_unsafe-5.i [2022-03-15 17:20:33,688 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a144fe94/a8363f0f7b9a447585d9570c22b3f3f4/FLAGc494c6abc [2022-03-15 17:20:33,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7a144fe94/a8363f0f7b9a447585d9570c22b3f3f4 [2022-03-15 17:20:33,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 17:20:33,710 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 17:20:33,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 17:20:33,723 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 17:20:33,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 17:20:33,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 05:20:33" (1/1) ... [2022-03-15 17:20:33,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13673654 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 17:20:33,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 05:20:33" (1/1) ... [2022-03-15 17:20:33,733 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 17:20:33,770 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_unsafe-5.i[30819,30832] [2022-03-15 17:20:34,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 17:20:34,077 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 17:20:34,115 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_unsafe-5.i[30819,30832] [2022-03-15 17:20:34,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 17:20:34,141 INFO L208 MainTranslator]: Completed translation [2022-03-15 17:20:34,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:34 WrapperNode [2022-03-15 17:20:34,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 17:20:34,142 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 17:20:34,142 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 17:20:34,143 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 17:20:34,147 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 17:20:34,157 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 17:20:34,170 INFO L137 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-03-15 17:20:34,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 17:20:34,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 17:20:34,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 17:20:34,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 17:20:34,175 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 17:20:34,175 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 17:20:34,177 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 17:20:34,177 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 17:20:34,181 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 17:20:34,183 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 17:20:34,184 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 17:20:34,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 17:20:34,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 17:20:34,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 17:20:34,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 17:20:34,188 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 17:20:34,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 17:20:34,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:34,210 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 17:20:34,226 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 17:20:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-03-15 17:20:34,250 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-03-15 17:20:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-03-15 17:20:34,250 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-03-15 17:20:34,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 17:20:34,251 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-03-15 17:20:34,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 17:20:34,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 17:20:34,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 17:20:34,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 17:20:34,252 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-03-15 17:20:34,252 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 17:20:34,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 17:20:34,253 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 17:20:34,390 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 17:20:34,391 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 17:20:34,567 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 17:20:34,571 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 17:20:34,572 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-15 17:20:34,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 05:20:34 BoogieIcfgContainer [2022-03-15 17:20:34,575 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 17:20:34,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 17:20:34,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 17:20:34,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 17:20:34,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 05:20:33" (1/3) ... [2022-03-15 17:20:34,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62cf211d 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 17:20:34,580 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 17:20:34,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62cf211d 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 17:20:34,580 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 17:20:34,581 INFO L111 eAbstractionObserver]: Analyzing ICFG fib_unsafe-5.i [2022-03-15 17:20:34,587 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 17:20:34,587 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 17:20:34,587 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 17:20:34,587 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 17:20:34,624 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,625 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,625 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,625 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,625 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,625 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,626 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,626 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,626 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,626 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,627 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,627 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,627 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,627 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,627 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,627 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,628 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,628 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,629 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,629 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,629 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,629 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,629 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,630 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,630 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,630 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,631 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,631 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,631 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,631 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,632 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,632 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,632 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,632 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,632 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,633 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,636 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,637 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,637 WARN L322 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,637 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,637 WARN L322 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,639 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,639 WARN L322 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,640 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,640 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,640 WARN L322 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:34,641 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-03-15 17:20:34,685 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 17:20:34,690 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 17:20:34,691 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-15 17:20:34,699 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 17:20:34,704 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 96 transitions, 202 flow [2022-03-15 17:20:34,706 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 96 transitions, 202 flow [2022-03-15 17:20:34,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 96 places, 96 transitions, 202 flow [2022-03-15 17:20:34,733 INFO L129 PetriNetUnfolder]: 7/94 cut-off events. [2022-03-15 17:20:34,733 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-03-15 17:20:34,736 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 17:20:34,738 INFO L116 LiptonReduction]: Number of co-enabled transitions 1870 [2022-03-15 17:20:37,031 INFO L131 LiptonReduction]: Checked pairs total: 1462 [2022-03-15 17:20:37,032 INFO L133 LiptonReduction]: Total number of compositions: 92 [2022-03-15 17:20:37,038 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 42 flow [2022-03-15 17:20:37,066 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 17:20:37,068 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 17:20:37,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-03-15 17:20:37,073 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:37,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-03-15 17:20:37,074 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:37,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:37,077 INFO L85 PathProgramCache]: Analyzing trace with hash -2083717598, now seen corresponding path program 1 times [2022-03-15 17:20:37,090 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:37,090 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121937406] [2022-03-15 17:20:37,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:37,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:37,265 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 17:20:37,265 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:37,265 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121937406] [2022-03-15 17:20:37,267 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121937406] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 17:20:37,267 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 17:20:37,267 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 17:20:37,269 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [614296818] [2022-03-15 17:20:37,269 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:37,272 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:37,280 INFO L252 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2022-03-15 17:20:37,280 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:37,283 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:37,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 17:20:37,284 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:37,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 17:20:37,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 17:20:37,303 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 17:20:37,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:37,337 INFO L93 Difference]: Finished difference Result 44 states and 122 transitions. [2022-03-15 17:20:37,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 17:20:37,343 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 17:20:37,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:37,352 INFO L225 Difference]: With dead ends: 44 [2022-03-15 17:20:37,352 INFO L226 Difference]: Without dead ends: 44 [2022-03-15 17:20:37,353 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 17:20:37,355 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 17:20:37,356 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 17:20:37,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-03-15 17:20:37,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-03-15 17:20:37,381 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 17:20:37,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 122 transitions. [2022-03-15 17:20:37,384 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 122 transitions. Word has length 6 [2022-03-15 17:20:37,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:37,384 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 122 transitions. [2022-03-15 17:20:37,384 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 17:20:37,385 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 122 transitions. [2022-03-15 17:20:37,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-03-15 17:20:37,386 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:37,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:37,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 17:20:37,387 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:37,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:37,388 INFO L85 PathProgramCache]: Analyzing trace with hash -170735922, now seen corresponding path program 1 times [2022-03-15 17:20:37,389 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:37,399 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926738951] [2022-03-15 17:20:37,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:37,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:37,460 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 17:20:37,460 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:37,460 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926738951] [2022-03-15 17:20:37,460 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926738951] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:37,461 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892742512] [2022-03-15 17:20:37,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:37,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:37,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:37,476 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 17:20:37,537 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 17:20:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:37,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-15 17:20:37,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:37,641 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 17:20:37,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:37,659 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 17:20:37,660 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892742512] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:37,660 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:37,660 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-03-15 17:20:37,660 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [167917651] [2022-03-15 17:20:37,660 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:37,661 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:37,675 INFO L252 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2022-03-15 17:20:37,676 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:37,676 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:37,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 17:20:37,676 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:37,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 17:20:37,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-03-15 17:20:37,677 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 17:20:37,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:37,706 INFO L93 Difference]: Finished difference Result 53 states and 149 transitions. [2022-03-15 17:20:37,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 17:20:37,706 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 17:20:37,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:37,707 INFO L225 Difference]: With dead ends: 53 [2022-03-15 17:20:37,710 INFO L226 Difference]: Without dead ends: 53 [2022-03-15 17:20:37,710 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 17:20:37,711 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 17:20:37,712 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 17:20:37,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-03-15 17:20:37,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-03-15 17:20:37,727 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 17:20:37,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 149 transitions. [2022-03-15 17:20:37,728 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 149 transitions. Word has length 7 [2022-03-15 17:20:37,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:37,728 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 149 transitions. [2022-03-15 17:20:37,729 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 17:20:37,729 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 149 transitions. [2022-03-15 17:20:37,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-03-15 17:20:37,729 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:37,729 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:37,748 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 17:20:37,955 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 17:20:37,956 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:37,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:37,956 INFO L85 PathProgramCache]: Analyzing trace with hash -997846110, now seen corresponding path program 2 times [2022-03-15 17:20:37,957 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:37,958 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698853992] [2022-03-15 17:20:37,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:37,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:37,996 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 17:20:37,996 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:37,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698853992] [2022-03-15 17:20:37,996 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698853992] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:37,996 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85584245] [2022-03-15 17:20:37,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:20:37,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:37,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:38,016 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 17:20:38,017 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 17:20:38,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 17:20:38,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:38,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-15 17:20:38,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:38,156 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 17:20:38,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:38,179 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 17:20:38,180 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85584245] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:38,180 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:38,180 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-03-15 17:20:38,180 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [113717753] [2022-03-15 17:20:38,180 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:38,181 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:38,189 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2022-03-15 17:20:38,189 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:38,190 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:38,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 17:20:38,190 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:38,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 17:20:38,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-03-15 17:20:38,191 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 17:20:38,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:38,231 INFO L93 Difference]: Finished difference Result 62 states and 176 transitions. [2022-03-15 17:20:38,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 17:20:38,231 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 17:20:38,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:38,232 INFO L225 Difference]: With dead ends: 62 [2022-03-15 17:20:38,232 INFO L226 Difference]: Without dead ends: 62 [2022-03-15 17:20:38,232 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 17:20:38,233 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 17:20:38,233 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 17:20:38,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-03-15 17:20:38,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-03-15 17:20:38,238 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 17:20:38,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 176 transitions. [2022-03-15 17:20:38,239 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 176 transitions. Word has length 8 [2022-03-15 17:20:38,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:38,239 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 176 transitions. [2022-03-15 17:20:38,239 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 17:20:38,239 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 176 transitions. [2022-03-15 17:20:38,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-03-15 17:20:38,241 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:38,241 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:38,261 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 17:20:38,463 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 17:20:38,463 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:38,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:38,464 INFO L85 PathProgramCache]: Analyzing trace with hash -868458162, now seen corresponding path program 3 times [2022-03-15 17:20:38,465 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:38,465 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590037022] [2022-03-15 17:20:38,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:38,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:38,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:38,518 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 17:20:38,518 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:38,519 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590037022] [2022-03-15 17:20:38,519 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590037022] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:38,519 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832640720] [2022-03-15 17:20:38,519 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 17:20:38,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:38,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:38,520 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 17:20:38,521 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 17:20:38,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 17:20:38,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:38,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-15 17:20:38,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:38,590 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 17:20:38,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:38,619 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 17:20:38,620 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832640720] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:38,620 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:38,620 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-03-15 17:20:38,620 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1649050460] [2022-03-15 17:20:38,620 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:38,620 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:38,621 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2022-03-15 17:20:38,622 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:38,622 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:38,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 17:20:38,622 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:38,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 17:20:38,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2022-03-15 17:20:38,623 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 17:20:38,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:38,655 INFO L93 Difference]: Finished difference Result 71 states and 203 transitions. [2022-03-15 17:20:38,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 17:20:38,655 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 17:20:38,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:38,656 INFO L225 Difference]: With dead ends: 71 [2022-03-15 17:20:38,656 INFO L226 Difference]: Without dead ends: 71 [2022-03-15 17:20:38,656 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 17:20:38,657 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 17:20:38,657 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 17:20:38,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-03-15 17:20:38,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-03-15 17:20:38,661 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 17:20:38,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 203 transitions. [2022-03-15 17:20:38,662 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 203 transitions. Word has length 9 [2022-03-15 17:20:38,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:38,662 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 203 transitions. [2022-03-15 17:20:38,662 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 17:20:38,662 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 203 transitions. [2022-03-15 17:20:38,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-03-15 17:20:38,663 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:38,663 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:38,682 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 17:20:38,881 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 17:20:38,882 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:38,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:38,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1152399070, now seen corresponding path program 4 times [2022-03-15 17:20:38,884 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:38,884 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581145069] [2022-03-15 17:20:38,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:38,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:38,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:38,946 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 17:20:38,946 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:38,946 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581145069] [2022-03-15 17:20:38,946 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581145069] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:38,947 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771209788] [2022-03-15 17:20:38,947 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 17:20:38,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:38,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:38,962 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 17:20:38,976 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 17:20:39,042 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 17:20:39,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:39,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-15 17:20:39,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:39,070 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 17:20:39,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:39,133 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 17:20:39,134 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771209788] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:39,134 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:39,134 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-03-15 17:20:39,134 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1355457814] [2022-03-15 17:20:39,134 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:39,135 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:39,135 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2022-03-15 17:20:39,136 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:39,136 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:39,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 17:20:39,136 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:39,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 17:20:39,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-03-15 17:20:39,137 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 17:20:39,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:39,188 INFO L93 Difference]: Finished difference Result 80 states and 230 transitions. [2022-03-15 17:20:39,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 17:20:39,189 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 17:20:39,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:39,190 INFO L225 Difference]: With dead ends: 80 [2022-03-15 17:20:39,190 INFO L226 Difference]: Without dead ends: 80 [2022-03-15 17:20:39,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-03-15 17:20:39,191 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 17:20:39,191 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 17:20:39,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-03-15 17:20:39,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-03-15 17:20:39,195 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 17:20:39,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 230 transitions. [2022-03-15 17:20:39,196 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 230 transitions. Word has length 10 [2022-03-15 17:20:39,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:39,196 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 230 transitions. [2022-03-15 17:20:39,196 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 17:20:39,197 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 230 transitions. [2022-03-15 17:20:39,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-15 17:20:39,211 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:39,212 INFO L514 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:39,231 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 17:20:39,412 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 17:20:39,412 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:39,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:39,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1364632626, now seen corresponding path program 5 times [2022-03-15 17:20:39,413 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:39,414 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879071469] [2022-03-15 17:20:39,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:39,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:39,480 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 17:20:39,480 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:39,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879071469] [2022-03-15 17:20:39,480 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879071469] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:39,480 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460185621] [2022-03-15 17:20:39,481 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 17:20:39,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:39,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:39,484 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 17:20:39,499 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 17:20:39,554 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 17:20:39,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:39,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 17:20:39,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:39,577 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 17:20:39,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:39,641 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 17:20:39,641 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460185621] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:39,641 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:39,641 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-03-15 17:20:39,642 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2055011582] [2022-03-15 17:20:39,642 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:39,642 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:39,643 INFO L252 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2022-03-15 17:20:39,645 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:39,646 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:39,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 17:20:39,646 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:39,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 17:20:39,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:39,647 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 17:20:39,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:39,698 INFO L93 Difference]: Finished difference Result 89 states and 257 transitions. [2022-03-15 17:20:39,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 17:20:39,698 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 17:20:39,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:39,700 INFO L225 Difference]: With dead ends: 89 [2022-03-15 17:20:39,700 INFO L226 Difference]: Without dead ends: 89 [2022-03-15 17:20:39,700 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 17:20:39,701 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, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:39,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 0 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:39,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-03-15 17:20:39,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-03-15 17:20:39,716 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 17:20:39,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 257 transitions. [2022-03-15 17:20:39,716 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 257 transitions. Word has length 11 [2022-03-15 17:20:39,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:39,717 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 257 transitions. [2022-03-15 17:20:39,717 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 17:20:39,717 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 257 transitions. [2022-03-15 17:20:39,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-15 17:20:39,717 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:39,717 INFO L514 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:39,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-03-15 17:20:39,934 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 17:20:39,934 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:39,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:39,935 INFO L85 PathProgramCache]: Analyzing trace with hash 646061730, now seen corresponding path program 6 times [2022-03-15 17:20:39,936 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:39,936 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896816176] [2022-03-15 17:20:39,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:39,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:39,988 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 17:20:39,989 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:39,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896816176] [2022-03-15 17:20:39,989 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896816176] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:39,989 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122086331] [2022-03-15 17:20:39,989 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 17:20:39,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:39,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:39,990 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 17:20:39,991 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 17:20:40,045 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-03-15 17:20:40,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:40,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 17:20:40,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:40,072 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 17:20:40,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:40,135 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 17:20:40,135 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122086331] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:40,135 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:40,135 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-03-15 17:20:40,136 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2020838581] [2022-03-15 17:20:40,136 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:40,136 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:40,137 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2022-03-15 17:20:40,137 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:40,137 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:40,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 17:20:40,138 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:40,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 17:20:40,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:40,138 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 17:20:40,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:40,209 INFO L93 Difference]: Finished difference Result 98 states and 284 transitions. [2022-03-15 17:20:40,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 17:20:40,210 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 17:20:40,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:40,211 INFO L225 Difference]: With dead ends: 98 [2022-03-15 17:20:40,211 INFO L226 Difference]: Without dead ends: 98 [2022-03-15 17:20:40,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:40,211 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 81 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 17:20:40,212 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 17:20:40,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-03-15 17:20:40,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-03-15 17:20:40,214 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 17:20:40,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 284 transitions. [2022-03-15 17:20:40,215 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 284 transitions. Word has length 12 [2022-03-15 17:20:40,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:40,215 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 284 transitions. [2022-03-15 17:20:40,215 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 17:20:40,215 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 284 transitions. [2022-03-15 17:20:40,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-15 17:20:40,216 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:40,216 INFO L514 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:40,234 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 17:20:40,432 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 17:20:40,432 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:40,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:40,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1446922674, now seen corresponding path program 7 times [2022-03-15 17:20:40,434 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:40,434 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309647038] [2022-03-15 17:20:40,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:40,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:40,496 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 17:20:40,496 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:40,497 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309647038] [2022-03-15 17:20:40,497 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309647038] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:40,497 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479029667] [2022-03-15 17:20:40,497 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 17:20:40,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:40,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:40,498 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 17:20:40,499 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 17:20:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:40,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 17:20:40,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:40,580 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 17:20:40,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:40,631 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 17:20:40,632 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479029667] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:40,632 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:40,632 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2022-03-15 17:20:40,632 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [408547365] [2022-03-15 17:20:40,632 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:40,634 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:40,635 INFO L252 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2022-03-15 17:20:40,635 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:40,635 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:40,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 17:20:40,636 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:40,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 17:20:40,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:40,636 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 17:20:40,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:40,698 INFO L93 Difference]: Finished difference Result 107 states and 311 transitions. [2022-03-15 17:20:40,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 17:20:40,698 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 17:20:40,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:40,699 INFO L225 Difference]: With dead ends: 107 [2022-03-15 17:20:40,699 INFO L226 Difference]: Without dead ends: 107 [2022-03-15 17:20:40,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:40,700 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 99 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:40,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 0 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 17:20:40,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-03-15 17:20:40,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-03-15 17:20:40,715 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 17:20:40,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 311 transitions. [2022-03-15 17:20:40,716 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 311 transitions. Word has length 13 [2022-03-15 17:20:40,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:40,716 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 311 transitions. [2022-03-15 17:20:40,716 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 17:20:40,717 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 311 transitions. [2022-03-15 17:20:40,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-15 17:20:40,717 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:40,718 INFO L514 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:40,753 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 17:20:40,919 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 17:20:40,919 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:40,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:40,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1904929758, now seen corresponding path program 8 times [2022-03-15 17:20:40,921 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:40,921 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794355745] [2022-03-15 17:20:40,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:40,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:41,010 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 17:20:41,010 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:41,011 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794355745] [2022-03-15 17:20:41,011 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794355745] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:41,011 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444750065] [2022-03-15 17:20:41,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:20:41,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:41,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:41,016 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 17:20:41,018 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 17:20:41,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 17:20:41,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:41,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-15 17:20:41,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:41,111 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 17:20:41,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:41,175 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 17:20:41,175 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444750065] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:41,175 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:41,175 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 14 [2022-03-15 17:20:41,177 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1368313285] [2022-03-15 17:20:41,177 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:41,180 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:41,182 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 14 transitions. [2022-03-15 17:20:41,182 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:41,182 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:41,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 17:20:41,182 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:41,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 17:20:41,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:41,183 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 17:20:41,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:41,254 INFO L93 Difference]: Finished difference Result 116 states and 338 transitions. [2022-03-15 17:20:41,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 17:20:41,255 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 17:20:41,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:41,256 INFO L225 Difference]: With dead ends: 116 [2022-03-15 17:20:41,256 INFO L226 Difference]: Without dead ends: 116 [2022-03-15 17:20:41,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:41,257 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 123 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:41,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 0 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 17:20:41,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-03-15 17:20:41,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2022-03-15 17:20:41,261 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 17:20:41,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 338 transitions. [2022-03-15 17:20:41,261 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 338 transitions. Word has length 14 [2022-03-15 17:20:41,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:41,261 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 338 transitions. [2022-03-15 17:20:41,261 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 17:20:41,262 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 338 transitions. [2022-03-15 17:20:41,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 17:20:41,263 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:41,264 INFO L514 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:41,282 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 17:20:41,480 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 17:20:41,480 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:41,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:41,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1076719822, now seen corresponding path program 9 times [2022-03-15 17:20:41,482 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:41,482 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717644398] [2022-03-15 17:20:41,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:41,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:41,554 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 17:20:41,555 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:41,555 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717644398] [2022-03-15 17:20:41,555 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717644398] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:41,555 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300472721] [2022-03-15 17:20:41,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 17:20:41,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:41,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:41,556 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 17:20:41,557 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 17:20:41,617 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-15 17:20:41,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:41,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 17:20:41,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:41,644 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 17:20:41,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:41,691 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 17:20:41,692 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300472721] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:41,692 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:41,692 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 14 [2022-03-15 17:20:41,692 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1783478744] [2022-03-15 17:20:41,692 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:41,693 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:41,694 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2022-03-15 17:20:41,694 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:41,695 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:41,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 17:20:41,695 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:41,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 17:20:41,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:41,695 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 17:20:41,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:41,770 INFO L93 Difference]: Finished difference Result 125 states and 365 transitions. [2022-03-15 17:20:41,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 17:20:41,770 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 17:20:41,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:41,771 INFO L225 Difference]: With dead ends: 125 [2022-03-15 17:20:41,771 INFO L226 Difference]: Without dead ends: 125 [2022-03-15 17:20:41,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:41,772 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 108 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:41,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 0 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 17:20:41,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-03-15 17:20:41,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2022-03-15 17:20:41,774 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 17:20:41,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 365 transitions. [2022-03-15 17:20:41,775 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 365 transitions. Word has length 15 [2022-03-15 17:20:41,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:41,775 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 365 transitions. [2022-03-15 17:20:41,775 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 17:20:41,775 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 365 transitions. [2022-03-15 17:20:41,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 17:20:41,775 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:41,776 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:41,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:41,999 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 17:20:41,999 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:42,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:42,000 INFO L85 PathProgramCache]: Analyzing trace with hash -981423710, now seen corresponding path program 10 times [2022-03-15 17:20:42,000 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:42,000 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573948923] [2022-03-15 17:20:42,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:42,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:42,089 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 17:20:42,089 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:42,089 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573948923] [2022-03-15 17:20:42,089 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573948923] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:42,089 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247870042] [2022-03-15 17:20:42,090 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 17:20:42,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:42,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:42,091 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 17:20:42,097 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 17:20:42,155 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 17:20:42,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:42,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 17:20:42,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:42,183 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 17:20:42,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:42,220 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 17:20:42,220 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247870042] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:42,220 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:42,220 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 14 [2022-03-15 17:20:42,221 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2101009212] [2022-03-15 17:20:42,221 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:42,222 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:42,223 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 16 transitions. [2022-03-15 17:20:42,223 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:42,224 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:42,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 17:20:42,224 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:42,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 17:20:42,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:42,224 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 17:20:42,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:42,297 INFO L93 Difference]: Finished difference Result 134 states and 392 transitions. [2022-03-15 17:20:42,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 17:20:42,297 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 17:20:42,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:42,298 INFO L225 Difference]: With dead ends: 134 [2022-03-15 17:20:42,298 INFO L226 Difference]: Without dead ends: 134 [2022-03-15 17:20:42,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:42,299 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 141 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:42,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 0 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 17:20:42,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-03-15 17:20:42,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2022-03-15 17:20:42,302 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 17:20:42,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 392 transitions. [2022-03-15 17:20:42,302 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 392 transitions. Word has length 16 [2022-03-15 17:20:42,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:42,302 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 392 transitions. [2022-03-15 17:20:42,302 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 17:20:42,303 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 392 transitions. [2022-03-15 17:20:42,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 17:20:42,303 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:42,303 INFO L514 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:42,319 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 17:20:42,518 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 17:20:42,518 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:42,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:42,519 INFO L85 PathProgramCache]: Analyzing trace with hash -359363762, now seen corresponding path program 11 times [2022-03-15 17:20:42,519 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:42,520 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933207265] [2022-03-15 17:20:42,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:42,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:42,625 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 17:20:42,625 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:42,625 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933207265] [2022-03-15 17:20:42,625 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933207265] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:42,626 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037209533] [2022-03-15 17:20:42,626 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 17:20:42,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:42,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:42,627 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 17:20:42,627 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 17:20:42,686 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-03-15 17:20:42,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:42,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-15 17:20:42,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:42,715 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 17:20:42,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:42,757 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 17:20:42,757 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037209533] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:42,757 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:42,757 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 14 [2022-03-15 17:20:42,757 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1277872530] [2022-03-15 17:20:42,757 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:42,759 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:42,760 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2022-03-15 17:20:42,760 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:42,762 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:42,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 17:20:42,762 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:42,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 17:20:42,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:42,763 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 17:20:42,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:42,840 INFO L93 Difference]: Finished difference Result 143 states and 419 transitions. [2022-03-15 17:20:42,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 17:20:42,841 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 17:20:42,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:42,842 INFO L225 Difference]: With dead ends: 143 [2022-03-15 17:20:42,842 INFO L226 Difference]: Without dead ends: 143 [2022-03-15 17:20:42,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:42,842 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 192 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:42,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 0 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 17:20:42,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-03-15 17:20:42,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2022-03-15 17:20:42,845 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 17:20:42,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 419 transitions. [2022-03-15 17:20:42,846 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 419 transitions. Word has length 17 [2022-03-15 17:20:42,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:42,846 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 419 transitions. [2022-03-15 17:20:42,846 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 17:20:42,846 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 419 transitions. [2022-03-15 17:20:42,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 17:20:42,847 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:42,847 INFO L514 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:42,863 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 17:20:43,059 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 17:20:43,060 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:20:43,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:43,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1744625442, now seen corresponding path program 12 times [2022-03-15 17:20:43,061 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:43,061 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219413456] [2022-03-15 17:20:43,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:43,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:43,376 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 17:20:43,376 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:43,377 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219413456] [2022-03-15 17:20:43,377 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219413456] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:43,377 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1365480271] [2022-03-15 17:20:43,377 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 17:20:43,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:43,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:43,378 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 17:20:43,388 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 17:20:43,475 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-15 17:20:43,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:43,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 40 conjunts are in the unsatisfiable core [2022-03-15 17:20:43,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:43,967 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:43,967 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:21:04,833 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 17:21:04,833 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1365480271] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:21:04,833 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:21:04,833 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 39 [2022-03-15 17:21:04,834 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1146280838] [2022-03-15 17:21:04,834 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:21:04,835 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:21:04,837 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 18 transitions. [2022-03-15 17:21:04,837 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:21:04,837 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:21:04,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 17:21:04,838 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:21:04,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 17:21:04,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=1350, Unknown=4, NotChecked=0, Total=1640 [2022-03-15 17:21:04,838 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), 14 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 17:21:05,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:21:05,479 INFO L93 Difference]: Finished difference Result 260 states and 766 transitions. [2022-03-15 17:21:05,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 17:21:05,479 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 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 17:21:05,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:21:05,480 INFO L225 Difference]: With dead ends: 260 [2022-03-15 17:21:05,480 INFO L226 Difference]: Without dead ends: 260 [2022-03-15 17:21:05,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=286, Invalid=1350, Unknown=4, NotChecked=0, Total=1640 [2022-03-15 17:21:05,481 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 52 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-03-15 17:21:05,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 0 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-03-15 17:21:05,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-03-15 17:21:05,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 248. [2022-03-15 17:21:05,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 3.0526315789473686) internal successors, (754), 247 states have internal predecessors, (754), 0 states have call successors, (0), 0 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 17:21:05,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 754 transitions. [2022-03-15 17:21:05,486 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 754 transitions. Word has length 18 [2022-03-15 17:21:05,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:21:05,486 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 754 transitions. [2022-03-15 17:21:05,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 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 17:21:05,486 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 754 transitions. [2022-03-15 17:21:05,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 17:21:05,487 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:21:05,487 INFO L514 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1] [2022-03-15 17:21:05,503 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 17:21:05,692 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 17:21:05,693 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:21:05,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:21:05,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1751185970, now seen corresponding path program 13 times [2022-03-15 17:21:05,694 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:21:05,694 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307144078] [2022-03-15 17:21:05,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:05,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:21:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:05,813 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 79 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:21:05,814 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:21:05,814 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307144078] [2022-03-15 17:21:05,814 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307144078] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:21:05,814 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701159043] [2022-03-15 17:21:05,814 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 17:21:05,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:05,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:21:05,822 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 17:21:05,823 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 17:21:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:05,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 17:21:05,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:21:05,935 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:21:05,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 17:21:05,936 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701159043] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 17:21:05,936 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 17:21:05,936 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [15] total 16 [2022-03-15 17:21:05,936 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [579102546] [2022-03-15 17:21:05,936 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:21:05,937 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:21:05,940 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2022-03-15 17:21:05,940 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:21:05,940 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:21:05,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 17:21:05,940 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:21:05,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 17:21:05,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=132, Unknown=0, NotChecked=0, Total=240 [2022-03-15 17:21:05,941 INFO L87 Difference]: Start difference. First operand 248 states and 754 transitions. Second operand has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 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 17:21:06,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:21:06,089 INFO L93 Difference]: Finished difference Result 258 states and 743 transitions. [2022-03-15 17:21:06,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 17:21:06,090 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 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 17:21:06,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:21:06,091 INFO L225 Difference]: With dead ends: 258 [2022-03-15 17:21:06,091 INFO L226 Difference]: Without dead ends: 244 [2022-03-15 17:21:06,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=132, Unknown=0, NotChecked=0, Total=240 [2022-03-15 17:21:06,092 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 84 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:21:06,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 0 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 17:21:06,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-03-15 17:21:06,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2022-03-15 17:21:06,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 2.888888888888889) internal successors, (702), 243 states have internal predecessors, (702), 0 states have call successors, (0), 0 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 17:21:06,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 702 transitions. [2022-03-15 17:21:06,097 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 702 transitions. Word has length 19 [2022-03-15 17:21:06,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:21:06,097 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 702 transitions. [2022-03-15 17:21:06,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 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 17:21:06,097 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 702 transitions. [2022-03-15 17:21:06,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 17:21:06,098 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:21:06,098 INFO L514 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:21:06,129 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 17:21:06,314 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 17:21:06,315 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:21:06,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:21:06,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1715364142, now seen corresponding path program 1 times [2022-03-15 17:21:06,316 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:21:06,316 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659926103] [2022-03-15 17:21:06,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:06,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:21:06,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:06,590 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 17:21:06,590 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:21:06,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659926103] [2022-03-15 17:21:06,590 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659926103] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:21:06,590 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280745126] [2022-03-15 17:21:06,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:06,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:06,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:21:06,592 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 17:21:06,593 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 17:21:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:06,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 41 conjunts are in the unsatisfiable core [2022-03-15 17:21:06,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:21:07,137 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:21:07,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:21:38,905 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 17:21:38,905 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280745126] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:21:38,905 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:21:38,905 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 42 [2022-03-15 17:21:38,906 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [814288372] [2022-03-15 17:21:38,906 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:21:38,907 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:21:38,911 INFO L252 McrAutomatonBuilder]: Finished intersection with 47 states and 72 transitions. [2022-03-15 17:21:38,912 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:21:39,867 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 12 new interpolants: [6289#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 142 ~j~0 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 6286#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 142 ~j~0 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 6293#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 142 ~j~0 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 6283#(and (<= (+ 142 ~j~0 ~i~0) ~cur~0) (<= (+ 143 ~i~0) ~cur~0)), 6284#(and (<= (+ 142 ~j~0 ~i~0) (+ ~prev~0 ~cur~0)) (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0))), 6285#(and (<= (+ 142 ~j~0 ~i~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 143 ~i~0) (+ ~prev~0 (* ~cur~0 2)))), 6291#(and (<= (+ 142 ~j~0 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 143 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 6282#(and (<= (+ 142 ~j~0 ~i~0) ~prev~0) (<= (+ 143 ~i~0) ~prev~0)), 6287#(and (<= (+ 142 ~j~0 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 6292#(and (<= (+ 142 ~j~0 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 143 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 6290#(and (<= (+ 142 ~j~0 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 6288#(and (<= (+ 142 ~j~0 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))))] [2022-03-15 17:21:39,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-15 17:21:39,867 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:21:39,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-15 17:21:39,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=2635, Unknown=8, NotChecked=0, Total=3080 [2022-03-15 17:21:39,868 INFO L87 Difference]: Start difference. First operand 244 states and 702 transitions. Second operand has 28 states, 27 states have (on average 2.111111111111111) internal successors, (57), 27 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 17:21:41,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:21:41,486 INFO L93 Difference]: Finished difference Result 328 states and 948 transitions. [2022-03-15 17:21:41,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-15 17:21:41,486 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.111111111111111) internal successors, (57), 27 states have internal predecessors, (57), 0 states have call successors, (0), 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 17:21:41,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:21:41,488 INFO L225 Difference]: With dead ends: 328 [2022-03-15 17:21:41,488 INFO L226 Difference]: Without dead ends: 314 [2022-03-15 17:21:41,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 27.0s TimeCoverageRelationStatistics Valid=548, Invalid=4136, Unknown=8, NotChecked=0, Total=4692 [2022-03-15 17:21:41,489 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 133 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 2513 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-03-15 17:21:41,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 0 Invalid, 2514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2513 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-03-15 17:21:41,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-03-15 17:21:41,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 286. [2022-03-15 17:21:41,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 2.992982456140351) internal successors, (853), 285 states have internal predecessors, (853), 0 states have call successors, (0), 0 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 17:21:41,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 853 transitions. [2022-03-15 17:21:41,495 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 853 transitions. Word has length 20 [2022-03-15 17:21:41,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:21:41,495 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 853 transitions. [2022-03-15 17:21:41,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.111111111111111) internal successors, (57), 27 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 17:21:41,495 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 853 transitions. [2022-03-15 17:21:41,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 17:21:41,496 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:21:41,496 INFO L514 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:21:41,527 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 17:21:41,697 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 17:21:41,697 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:21:41,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:21:41,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1547751364, now seen corresponding path program 1 times [2022-03-15 17:21:41,700 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:21:41,700 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986033183] [2022-03-15 17:21:41,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:41,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:21:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:42,028 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 17:21:42,028 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:21:42,028 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986033183] [2022-03-15 17:21:42,028 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986033183] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:21:42,029 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747266564] [2022-03-15 17:21:42,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:42,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:42,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:21:42,030 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 17:21:42,031 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 17:21:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:42,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 41 conjunts are in the unsatisfiable core [2022-03-15 17:21:42,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:21:42,598 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:21:42,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:22:06,999 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 17:22:06,999 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747266564] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:22:06,999 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:22:06,999 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 42 [2022-03-15 17:22:06,999 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1111637726] [2022-03-15 17:22:06,999 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:22:07,000 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:22:07,006 INFO L252 McrAutomatonBuilder]: Finished intersection with 51 states and 80 transitions. [2022-03-15 17:22:07,006 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:22:08,346 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 13 new interpolants: [7378#(and (<= (+ 143 ~i~0) (+ ~cur~0 ~j~0)) (= (+ (- 1) ~j~0) 0) (<= 144 ~cur~0)), 7387#(and (<= (+ 143 ~i~0) (+ ~j~0 (* ~cur~0 55) (* ~prev~0 34))) (= ~j~0 1) (<= 144 (+ (* ~cur~0 55) (* ~prev~0 34)))), 7380#(and (<= 144 (+ ~prev~0 (* ~cur~0 2))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~prev~0 ~j~0 (* ~cur~0 2)))), 7379#(and (<= 144 (+ ~prev~0 ~cur~0)) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0 ~j~0))), 7383#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8) ~j~0)) (<= 144 (+ (* ~prev~0 5) (* ~cur~0 8))) (= ~j~0 1)), 7385#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13) ~j~0)) (= ~j~0 1) (<= 144 (+ (* ~cur~0 21) (* ~prev~0 13)))), 7384#(and (= ~j~0 1) (<= 144 (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 143 ~i~0) (+ (* ~prev~0 8) ~j~0 (* ~cur~0 13)))), 7390#(and (<= 144 (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 143 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (= ~j~0 1)), 7386#(and (<= 144 (+ (* ~cur~0 34) (* ~prev~0 21))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~j~0 (* ~cur~0 34) (* ~prev~0 21)))), 7382#(and (<= 144 (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) ~j~0 (* ~prev~0 3))) (= ~j~0 1)), 7388#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~j~0 (* ~prev~0 55) (* ~cur~0 89))) (<= 144 (+ (* ~prev~0 55) (* ~cur~0 89)))), 7381#(and (= ~j~0 1) (<= 144 (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2) ~j~0))), 7389#(and (<= 144 (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 143 ~i~0) (+ (* ~prev~0 89) ~j~0 (* ~cur~0 144))) (= ~j~0 1))] [2022-03-15 17:22:08,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-15 17:22:08,346 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:22:08,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-15 17:22:08,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=2829, Unknown=7, NotChecked=0, Total=3192 [2022-03-15 17:22:08,347 INFO L87 Difference]: Start difference. First operand 286 states and 853 transitions. Second operand has 29 states, 28 states have (on average 2.25) internal successors, (63), 28 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 17:22:11,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:22:11,626 INFO L93 Difference]: Finished difference Result 1398 states and 4011 transitions. [2022-03-15 17:22:11,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-03-15 17:22:11,627 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.25) internal successors, (63), 28 states have internal predecessors, (63), 0 states have call successors, (0), 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 17:22:11,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:22:11,632 INFO L225 Difference]: With dead ends: 1398 [2022-03-15 17:22:11,632 INFO L226 Difference]: Without dead ends: 1372 [2022-03-15 17:22:11,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 16 SyntacticMatches, 11 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2077 ImplicationChecksByTransitivity, 23.2s TimeCoverageRelationStatistics Valid=1677, Invalid=6506, Unknown=7, NotChecked=0, Total=8190 [2022-03-15 17:22:11,634 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 311 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 2240 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-03-15 17:22:11,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [311 Valid, 0 Invalid, 2365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 2240 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-03-15 17:22:11,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1372 states. [2022-03-15 17:22:11,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1372 to 346. [2022-03-15 17:22:11,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 346 states, 345 states have (on average 2.889855072463768) internal successors, (997), 345 states have internal predecessors, (997), 0 states have call successors, (0), 0 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 17:22:11,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 346 states to 346 states and 997 transitions. [2022-03-15 17:22:11,648 INFO L78 Accepts]: Start accepts. Automaton has 346 states and 997 transitions. Word has length 20 [2022-03-15 17:22:11,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:22:11,648 INFO L470 AbstractCegarLoop]: Abstraction has 346 states and 997 transitions. [2022-03-15 17:22:11,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.25) internal successors, (63), 28 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 17:22:11,648 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states and 997 transitions. [2022-03-15 17:22:11,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 17:22:11,649 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:22:11,649 INFO L514 BasicCegarLoop]: trace histogram [12, 2, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:22:11,665 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 17:22:11,863 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 17:22:11,864 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:22:11,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:22:11,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1131122049, now seen corresponding path program 2 times [2022-03-15 17:22:11,865 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:22:11,865 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238732822] [2022-03-15 17:22:11,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:22:11,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:22:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:22:12,209 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:22:12,209 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:22:12,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238732822] [2022-03-15 17:22:12,209 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238732822] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:22:12,209 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532094227] [2022-03-15 17:22:12,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:22:12,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:22:12,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:22:12,218 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 17:22:12,219 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 17:22:12,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 17:22:12,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:22:12,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-15 17:22:12,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:22:12,897 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:22:12,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:23:05,115 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:23:05,115 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532094227] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:23:05,116 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:23:05,116 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2022-03-15 17:23:05,116 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1877898505] [2022-03-15 17:23:05,116 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:23:05,117 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:23:05,123 INFO L252 McrAutomatonBuilder]: Finished intersection with 61 states and 99 transitions. [2022-03-15 17:23:05,123 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:23:07,426 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 24 new interpolants: [9725#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 143 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 9731#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 9718#(and (<= (+ 141 ~j~0 ~i~0) (+ ~prev~0 ~cur~0)) (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0))), 9724#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 9733#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13)))), 9727#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) ~cur~0) (<= (+ 143 ~i~0) ~cur~0)), 9734#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 9716#(and (<= (+ 143 ~i~0) ~prev~0) (<= (+ 141 ~j~0 ~i~0) ~prev~0)), 9737#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 143 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 9736#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 141 ~j~0 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 9735#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 143 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 9728#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ ~prev~0 ~cur~0)) (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0))), 9720#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 9719#(and (<= (+ 143 ~i~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 141 ~j~0 ~i~0) (+ ~prev~0 (* ~cur~0 2)))), 9721#(and (<= (+ 141 ~j~0 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 9738#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 141 ~j~0 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 9717#(and (<= (+ 141 ~j~0 ~i~0) ~cur~0) (<= (+ 143 ~i~0) ~cur~0)), 9730#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2)))), 9722#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8)))), 9723#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 143 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 9739#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89)))), 9732#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8)))), 9726#(and (<= (+ 143 ~i~0) ~prev~0) (<= (+ 141 ~j~0 (* 2 ~i~0)) ~prev~0)), 9729#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 143 ~i~0) (+ ~prev~0 (* ~cur~0 2))))] [2022-03-15 17:23:07,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-15 17:23:07,427 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:23:07,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-15 17:23:07,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=533, Invalid=4424, Unknown=13, NotChecked=0, Total=4970 [2022-03-15 17:23:07,428 INFO L87 Difference]: Start difference. First operand 346 states and 997 transitions. Second operand has 41 states, 40 states have (on average 2.075) internal successors, (83), 40 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:23:10,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:23:10,915 INFO L93 Difference]: Finished difference Result 472 states and 1366 transitions. [2022-03-15 17:23:10,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-15 17:23:10,916 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 2.075) internal successors, (83), 40 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 17:23:10,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:23:10,918 INFO L225 Difference]: With dead ends: 472 [2022-03-15 17:23:10,918 INFO L226 Difference]: Without dead ends: 458 [2022-03-15 17:23:10,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1979 ImplicationChecksByTransitivity, 42.2s TimeCoverageRelationStatistics Valid=783, Invalid=8516, Unknown=13, NotChecked=0, Total=9312 [2022-03-15 17:23:10,920 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 263 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 3748 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:23:10,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 0 Invalid, 3750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3748 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-03-15 17:23:10,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-03-15 17:23:10,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 388. [2022-03-15 17:23:10,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 387 states have (on average 2.96640826873385) internal successors, (1148), 387 states have internal predecessors, (1148), 0 states have call successors, (0), 0 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 17:23:10,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 1148 transitions. [2022-03-15 17:23:10,944 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 1148 transitions. Word has length 21 [2022-03-15 17:23:10,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:23:10,944 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 1148 transitions. [2022-03-15 17:23:10,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 2.075) internal successors, (83), 40 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:23:10,944 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 1148 transitions. [2022-03-15 17:23:10,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 17:23:10,948 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:23:10,948 INFO L514 BasicCegarLoop]: trace histogram [12, 2, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:23:10,980 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 17:23:11,148 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 17:23:11,148 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:23:11,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:23:11,149 INFO L85 PathProgramCache]: Analyzing trace with hash 735652235, now seen corresponding path program 2 times [2022-03-15 17:23:11,150 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:23:11,150 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951471110] [2022-03-15 17:23:11,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:23:11,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:23:11,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:23:11,483 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:23:11,484 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:23:11,484 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951471110] [2022-03-15 17:23:11,484 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951471110] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:23:11,484 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901711500] [2022-03-15 17:23:11,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:23:11,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:23:11,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:23:11,485 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 17:23:11,486 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 17:23:11,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 17:23:11,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:23:11,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-15 17:23:11,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:23:12,179 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:23:12,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:23:31,921 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:23:31,921 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901711500] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:23:31,921 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:23:31,921 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2022-03-15 17:23:31,921 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [213906925] [2022-03-15 17:23:31,922 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:23:31,924 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:23:31,930 INFO L252 McrAutomatonBuilder]: Finished intersection with 67 states and 111 transitions. [2022-03-15 17:23:31,931 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:23:34,438 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 25 new interpolants: [11222#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13) ~j~0)) (= ~j~0 1) (<= 144 (+ (* ~cur~0 21) (* ~prev~0 13)))), 11219#(and (<= 144 (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) ~j~0 (* ~prev~0 3))) (= ~j~0 1)), 11210#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2) (* 2 ~j~0))) (= ~j~0 1) (<= 144 (+ (* ~cur~0 3) (* ~prev~0 2)))), 11220#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8) ~j~0)) (<= 144 (+ (* ~prev~0 5) (* ~cur~0 8))) (= ~j~0 1)), 11223#(and (<= (+ 143 ~i~0) (+ (* 2 ~j~0) (* ~cur~0 34) (* ~prev~0 21))) (<= 144 (+ (* ~cur~0 34) (* ~prev~0 21))) (= ~j~0 1)), 11230#(and (<= 144 (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 143 ~i~0) (+ (* ~prev~0 89) ~j~0 (* ~cur~0 144))) (= ~j~0 1)), 11208#(and (<= 144 (+ ~prev~0 ~cur~0)) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0 (* 2 ~j~0)))), 11217#(and (<= 144 (+ ~prev~0 (* ~cur~0 2))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~prev~0 ~j~0 (* ~cur~0 2)))), 11231#(and (<= 144 (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 143 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (= ~j~0 1)), 11211#(and (<= 144 (+ (* 5 ~cur~0) (* ~prev~0 3))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) (* 2 ~j~0) (* ~prev~0 3)))), 11218#(and (= ~j~0 1) (<= 144 (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2) ~j~0))), 11229#(and (<= 144 (+ (* ~prev~0 89) (* ~cur~0 144))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* ~prev~0 89) (* 2 ~j~0) (* ~cur~0 144)))), 11225#(and (<= (+ 143 ~i~0) (+ (* 2 ~j~0) (* ~cur~0 55) (* ~prev~0 34))) (= ~j~0 1) (<= 144 (+ (* ~cur~0 55) (* ~prev~0 34)))), 11216#(and (<= 144 (+ ~prev~0 ~cur~0)) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0 ~j~0))), 11228#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~j~0 (* ~prev~0 55) (* ~cur~0 89))) (<= 144 (+ (* ~prev~0 55) (* ~cur~0 89)))), 11213#(and (<= (+ 143 ~i~0) (+ (* 2 ~j~0) (* ~prev~0 8) (* ~cur~0 13))) (= ~j~0 1) (<= 144 (+ (* ~prev~0 8) (* ~cur~0 13)))), 11226#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* 2 ~j~0) (* ~prev~0 55) (* ~cur~0 89))) (<= 144 (+ (* ~prev~0 55) (* ~cur~0 89)))), 11215#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~cur~0 ~j~0)) (<= 144 ~cur~0)), 11212#(and (<= 144 (+ (* ~prev~0 5) (* ~cur~0 8))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8) (* 2 ~j~0)))), 11214#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13) (* 2 ~j~0))) (<= 144 (+ (* ~cur~0 21) (* ~prev~0 13)))), 11227#(and (<= (+ 143 ~i~0) (+ ~j~0 (* ~cur~0 55) (* ~prev~0 34))) (= ~j~0 1) (<= 144 (+ (* ~cur~0 55) (* ~prev~0 34)))), 11221#(and (= ~j~0 1) (<= 144 (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 143 ~i~0) (+ (* ~prev~0 8) ~j~0 (* ~cur~0 13)))), 11209#(and (<= 144 (+ ~prev~0 (* ~cur~0 2))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~prev~0 (* 2 ~j~0) (* ~cur~0 2)))), 11224#(and (<= 144 (+ (* ~cur~0 34) (* ~prev~0 21))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~j~0 (* ~cur~0 34) (* ~prev~0 21)))), 11207#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~cur~0 (* 2 ~j~0))) (<= 144 ~cur~0))] [2022-03-15 17:23:34,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-15 17:23:34,438 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:23:34,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-15 17:23:34,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=4672, Unknown=3, NotChecked=0, Total=5112 [2022-03-15 17:23:34,439 INFO L87 Difference]: Start difference. First operand 388 states and 1148 transitions. Second operand has 42 states, 41 states have (on average 2.2195121951219514) internal successors, (91), 41 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 17:23:40,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:23:40,605 INFO L93 Difference]: Finished difference Result 2126 states and 6050 transitions. [2022-03-15 17:23:40,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-03-15 17:23:40,605 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.2195121951219514) internal successors, (91), 41 states have internal predecessors, (91), 0 states have call successors, (0), 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 17:23:40,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:23:40,613 INFO L225 Difference]: With dead ends: 2126 [2022-03-15 17:23:40,613 INFO L226 Difference]: Without dead ends: 2100 [2022-03-15 17:23:40,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 19 SyntacticMatches, 11 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5987 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=4386, Invalid=14517, Unknown=3, NotChecked=0, Total=18906 [2022-03-15 17:23:40,618 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 508 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 3101 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 3101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-03-15 17:23:40,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [508 Valid, 0 Invalid, 3303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 3101 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-03-15 17:23:40,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2100 states. [2022-03-15 17:23:40,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2100 to 432. [2022-03-15 17:23:40,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 3.02784222737819) internal successors, (1305), 431 states have internal predecessors, (1305), 0 states have call successors, (0), 0 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 17:23:40,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 1305 transitions. [2022-03-15 17:23:40,636 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 1305 transitions. Word has length 21 [2022-03-15 17:23:40,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:23:40,636 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 1305 transitions. [2022-03-15 17:23:40,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.2195121951219514) internal successors, (91), 41 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 17:23:40,636 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 1305 transitions. [2022-03-15 17:23:40,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 17:23:40,637 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:23:40,637 INFO L514 BasicCegarLoop]: trace histogram [12, 3, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:23:40,655 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 17:23:40,851 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 17:23:40,852 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:23:40,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:23:40,852 INFO L85 PathProgramCache]: Analyzing trace with hash -199486350, now seen corresponding path program 3 times [2022-03-15 17:23:40,853 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:23:40,853 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146482026] [2022-03-15 17:23:40,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:23:40,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:23:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:23:41,167 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:23:41,167 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:23:41,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146482026] [2022-03-15 17:23:41,167 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146482026] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:23:41,167 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323718684] [2022-03-15 17:23:41,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 17:23:41,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:23:41,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:23:41,168 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 17:23:41,169 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 17:23:41,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-03-15 17:23:41,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:23:41,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-15 17:23:41,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:23:41,884 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 55 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:23:41,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:24:45,579 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:24:45,579 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323718684] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:24:45,580 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:24:45,580 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 48 [2022-03-15 17:24:45,580 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [414378013] [2022-03-15 17:24:45,580 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:24:45,582 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:24:45,589 INFO L252 McrAutomatonBuilder]: Finished intersection with 75 states and 126 transitions. [2022-03-15 17:24:45,589 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:24:48,978 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 36 new interpolants: [14535#(and (<= (+ 143 ~i~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 140 ~j~0 ~i~0) (+ ~prev~0 (* ~cur~0 2)))), 14554#(and (<= (+ 140 ~j~0 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 14555#(and (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 14560#(and (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 143 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 14548#(and (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0)) (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ ~prev~0 ~cur~0))), 14563#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 143 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 14545#(and (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8)))), 14539#(and (<= (+ 140 ~j~0 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 143 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 14546#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13)))), 14533#(and (<= (+ 140 ~j~0 ~i~0) ~cur~0) (<= (+ 143 ~i~0) ~cur~0)), 14531#(and (<= (+ 143 ~i~0) ~prev~0) (<= (+ 140 ~j~0 (* 2 ~i~0)) ~prev~0)), 14550#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 14540#(and (<= (+ 140 ~j~0 (* 2 ~i~0)) ~cur~0) (<= (+ 143 ~i~0) ~cur~0)), 14538#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 140 ~j~0 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8)))), 14565#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 143 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 14543#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2)))), 14557#(and (<= (+ 140 ~j~0 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 143 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 14534#(and (<= (+ 140 ~j~0 ~i~0) (+ ~prev~0 ~cur~0)) (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0))), 14532#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) ~prev~0) (<= (+ 143 ~i~0) ~prev~0)), 14558#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 140 ~j~0 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 14537#(and (<= (+ 140 ~j~0 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 14544#(and (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 14551#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 14553#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13)))), 14542#(and (<= (+ 143 ~i~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ ~prev~0 (* ~cur~0 2)))), 14559#(and (<= (+ 140 ~j~0 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 143 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 14549#(and (<= (+ 143 ~i~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ ~prev~0 (* ~cur~0 2)))), 14547#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) ~cur~0) (<= (+ 143 ~i~0) ~cur~0)), 14561#(and (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 143 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 14564#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 143 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 14556#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 14562#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89)))), 14530#(and (<= (+ 140 ~j~0 ~i~0) ~prev~0) (<= (+ 143 ~i~0) ~prev~0)), 14536#(and (<= (+ 140 ~j~0 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 14541#(and (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ ~prev~0 ~cur~0)) (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0))), 14552#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8))))] [2022-03-15 17:24:48,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-03-15 17:24:48,979 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:24:48,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-03-15 17:24:48,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=635, Invalid=6655, Unknown=20, NotChecked=0, Total=7310 [2022-03-15 17:24:48,980 INFO L87 Difference]: Start difference. First operand 432 states and 1305 transitions. Second operand has 54 states, 53 states have (on average 2.056603773584906) internal successors, (109), 53 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:24:54,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:24:54,460 INFO L93 Difference]: Finished difference Result 586 states and 1728 transitions. [2022-03-15 17:24:54,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-03-15 17:24:54,460 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 2.056603773584906) internal successors, (109), 53 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-03-15 17:24:54,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:24:54,462 INFO L225 Difference]: With dead ends: 586 [2022-03-15 17:24:54,463 INFO L226 Difference]: Without dead ends: 572 [2022-03-15 17:24:54,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3137 ImplicationChecksByTransitivity, 60.7s TimeCoverageRelationStatistics Valid=1051, Invalid=14429, Unknown=20, NotChecked=0, Total=15500 [2022-03-15 17:24:54,464 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 435 mSDsluCounter, 2772 mSDsCounter, 0 mSdLazyCounter, 4894 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 4897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-03-15 17:24:54,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 0 Invalid, 4897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4894 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-03-15 17:24:54,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2022-03-15 17:24:54,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 474. [2022-03-15 17:24:54,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 473 states have (on average 3.0782241014799157) internal successors, (1456), 473 states have internal predecessors, (1456), 0 states have call successors, (0), 0 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 17:24:54,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 1456 transitions. [2022-03-15 17:24:54,473 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 1456 transitions. Word has length 22 [2022-03-15 17:24:54,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:24:54,474 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 1456 transitions. [2022-03-15 17:24:54,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 2.056603773584906) internal successors, (109), 53 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:24:54,474 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 1456 transitions. [2022-03-15 17:24:54,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 17:24:54,475 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:24:54,475 INFO L514 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:24:54,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-15 17:24:54,692 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 17:24:54,692 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:24:54,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:24:54,692 INFO L85 PathProgramCache]: Analyzing trace with hash 802448244, now seen corresponding path program 1 times [2022-03-15 17:24:54,694 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:24:54,694 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988354656] [2022-03-15 17:24:54,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:24:54,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:24:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:24:54,984 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 17:24:54,984 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:24:54,984 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988354656] [2022-03-15 17:24:54,984 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988354656] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:24:54,984 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736531549] [2022-03-15 17:24:54,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:24:54,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:24:54,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:24:54,987 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 17:24:54,991 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 17:24:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:24:55,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-15 17:24:55,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:24:55,612 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:24:55,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:25:25,121 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 17:25:25,121 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736531549] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:25:25,121 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:25:25,121 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2022-03-15 17:25:25,121 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [796196086] [2022-03-15 17:25:25,121 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:25:25,123 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:25:25,134 INFO L252 McrAutomatonBuilder]: Finished intersection with 105 states and 212 transitions. [2022-03-15 17:25:25,134 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:25:27,957 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 26 new interpolants: [16362#(and (<= (+ 141 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 142 ~j~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 16360#(and (<= (+ 141 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 142 ~j~0) (+ (* ~prev~0 5) (* ~cur~0 8)))), 16371#(and (<= (+ 142 ~j~0 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21)))), 16375#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 142 ~j~0) (+ (* ~prev~0 89) (* ~cur~0 144)))), 16376#(and (<= (+ 142 ~j~0 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 89) (* ~cur~0 144)))), 16364#(and (<= (+ 142 ~j~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 141 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 16354#(and (<= (+ 142 ~j~0 ~i~0) ~prev~0) (<= (+ 141 ~j~0 (* 2 ~i~0)) ~prev~0)), 16359#(and (<= (+ 141 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 142 ~j~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 16368#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 142 ~j~0 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8)))), 16369#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 142 ~j~0 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 16361#(and (<= (+ 142 ~j~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 141 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 16365#(and (<= (+ 141 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 142 ~j~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 16370#(and (<= (+ 142 ~j~0 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13)))), 16351#(and (<= (+ 142 ~j~0) ~cur~0) (<= (+ 141 ~i~0) ~cur~0)), 16355#(and (<= (+ 142 ~j~0 ~i~0) ~cur~0) (<= (+ 141 ~j~0 (* 2 ~i~0)) ~cur~0)), 16353#(and (<= (+ 142 ~j~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 141 ~i~0) (+ ~prev~0 (* ~cur~0 2)))), 16366#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 142 ~j~0 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 16357#(and (<= (+ 142 ~j~0 ~i~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ ~prev~0 (* ~cur~0 2)))), 16358#(and (<= (+ 141 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 142 ~j~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 16373#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 142 ~j~0 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 16352#(and (<= (+ 142 ~j~0) (+ ~prev~0 ~cur~0)) (<= (+ 141 ~i~0) (+ ~prev~0 ~cur~0))), 16363#(and (<= (+ 141 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 142 ~j~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 16356#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ ~prev~0 ~cur~0)) (<= (+ 142 ~j~0 ~i~0) (+ ~prev~0 ~cur~0))), 16367#(and (<= (+ 142 ~j~0 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 16372#(and (<= (+ 142 ~j~0 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34)))), 16374#(and (<= (+ 141 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 142 ~j~0) (+ (* ~prev~0 89) (* ~cur~0 144))))] [2022-03-15 17:25:27,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 17:25:27,957 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:25:27,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 17:25:27,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=573, Invalid=4678, Unknown=5, NotChecked=0, Total=5256 [2022-03-15 17:25:27,958 INFO L87 Difference]: Start difference. First operand 474 states and 1456 transitions. Second operand has 43 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 42 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 17:25:44,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:25:44,911 INFO L93 Difference]: Finished difference Result 1932 states and 5613 transitions. [2022-03-15 17:25:44,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 178 states. [2022-03-15 17:25:44,912 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 42 states have internal predecessors, (117), 0 states have call successors, (0), 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 17:25:44,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:25:44,918 INFO L225 Difference]: With dead ends: 1932 [2022-03-15 17:25:44,918 INFO L226 Difference]: Without dead ends: 1876 [2022-03-15 17:25:44,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 223 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15467 ImplicationChecksByTransitivity, 26.4s TimeCoverageRelationStatistics Valid=3024, Invalid=47371, Unknown=5, NotChecked=0, Total=50400 [2022-03-15 17:25:44,921 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 656 mSDsluCounter, 4796 mSDsCounter, 0 mSdLazyCounter, 9761 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 656 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 9761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-03-15 17:25:44,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [656 Valid, 0 Invalid, 9963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 9761 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-03-15 17:25:44,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1876 states. [2022-03-15 17:25:44,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1876 to 488. [2022-03-15 17:25:44,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 488 states, 487 states have (on average 3.0451745379876796) internal successors, (1483), 487 states have internal predecessors, (1483), 0 states have call successors, (0), 0 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 17:25:44,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 1483 transitions. [2022-03-15 17:25:44,935 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 1483 transitions. Word has length 22 [2022-03-15 17:25:44,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:25:44,935 INFO L470 AbstractCegarLoop]: Abstraction has 488 states and 1483 transitions. [2022-03-15 17:25:44,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 2.7857142857142856) internal successors, (117), 42 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 17:25:44,935 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 1483 transitions. [2022-03-15 17:25:44,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 17:25:44,936 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:25:44,936 INFO L514 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:25:44,955 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-03-15 17:25:45,155 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 17:25:45,156 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:25:45,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:25:45,156 INFO L85 PathProgramCache]: Analyzing trace with hash 290156336, now seen corresponding path program 2 times [2022-03-15 17:25:45,158 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:25:45,158 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352793254] [2022-03-15 17:25:45,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:25:45,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:25:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:25:45,433 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 17:25:45,433 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:25:45,433 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352793254] [2022-03-15 17:25:45,433 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352793254] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:25:45,434 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640333779] [2022-03-15 17:25:45,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:25:45,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:25:45,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:25:45,435 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 17:25:45,435 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 17:25:45,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 17:25:45,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:25:45,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-15 17:25:45,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:25:46,119 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 55 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:25:46,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:26:16,658 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 17:26:16,658 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640333779] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:26:16,658 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:26:16,658 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 45 [2022-03-15 17:26:16,658 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2052506294] [2022-03-15 17:26:16,658 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:26:16,660 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:26:16,672 INFO L252 McrAutomatonBuilder]: Finished intersection with 107 states and 216 transitions. [2022-03-15 17:26:16,673 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:26:19,720 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 25 new interpolants: [19786#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (= ~j~0 1)), 19776#(and (<= (+ 142 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 141 ~j~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 19765#(and (<= (+ 141 ~j~0) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 142 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 19781#(and (= ~j~0 1) (<= (+ 141 ~j~0 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 19766#(and (<= (+ 142 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 141 ~j~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 19770#(and (= ~j~0 1) (<= (+ 142 ~i~0) (+ ~prev~0 ~cur~0))), 19768#(and (<= (+ 141 ~j~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 142 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 19778#(and (<= (+ 141 ~j~0) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 142 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 19777#(and (<= (+ 142 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13))) (= ~j~0 1)), 19780#(and (<= (+ 142 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 141 ~j~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 19763#(and (<= (+ 142 ~i~0) (+ ~prev~0 ~cur~0)) (<= (+ 141 ~j~0) (+ ~prev~0 ~cur~0))), 19782#(and (<= (+ 141 ~j~0) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 142 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 19764#(and (<= (+ 141 ~j~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 142 ~i~0) (+ ~prev~0 (* ~cur~0 2)))), 19769#(and (= ~j~0 1) (<= (+ 142 ~i~0) ~cur~0)), 19771#(and (= ~j~0 1) (<= (+ 141 ~j~0 ~i~0) (+ ~prev~0 (* ~cur~0 2)))), 19779#(and (= ~j~0 1) (<= (+ 142 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 19762#(and (<= (+ 142 ~i~0) ~cur~0) (<= (+ 141 ~j~0) ~cur~0)), 19774#(and (= ~j~0 1) (<= (+ 142 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8)))), 19783#(and (= ~j~0 1) (<= (+ 142 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 19785#(and (= ~j~0 1) (<= (+ 142 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144)))), 19772#(and (= ~j~0 1) (<= (+ 142 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 19775#(and (= ~j~0 1) (<= (+ 142 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 19773#(and (<= (+ 141 ~j~0 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (= ~j~0 1)), 19767#(and (<= (+ 141 ~j~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 142 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8)))), 19784#(and (<= (+ 141 ~j~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 142 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))))] [2022-03-15 17:26:19,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-15 17:26:19,720 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:26:19,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-15 17:26:19,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=4642, Unknown=6, NotChecked=0, Total=5112 [2022-03-15 17:26:19,721 INFO L87 Difference]: Start difference. First operand 488 states and 1483 transitions. Second operand has 42 states, 41 states have (on average 2.8292682926829267) internal successors, (116), 41 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 17:26:38,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:26:38,180 INFO L93 Difference]: Finished difference Result 3864 states and 11067 transitions. [2022-03-15 17:26:38,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2022-03-15 17:26:38,180 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 2.8292682926829267) internal successors, (116), 41 states have internal predecessors, (116), 0 states have call successors, (0), 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 17:26:38,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:26:38,194 INFO L225 Difference]: With dead ends: 3864 [2022-03-15 17:26:38,194 INFO L226 Difference]: Without dead ends: 3772 [2022-03-15 17:26:38,196 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 36 SyntacticMatches, 35 SemanticMatches, 207 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13060 ImplicationChecksByTransitivity, 37.6s TimeCoverageRelationStatistics Valid=5978, Invalid=37488, Unknown=6, NotChecked=0, Total=43472 [2022-03-15 17:26:38,197 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 404 mSDsluCounter, 7228 mSDsCounter, 0 mSdLazyCounter, 13038 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 13238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 13038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-03-15 17:26:38,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [404 Valid, 0 Invalid, 13238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 13038 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-03-15 17:26:38,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3772 states. [2022-03-15 17:26:38,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3772 to 504. [2022-03-15 17:26:38,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 503 states have (on average 3.00596421471173) internal successors, (1512), 503 states have internal predecessors, (1512), 0 states have call successors, (0), 0 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 17:26:38,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 1512 transitions. [2022-03-15 17:26:38,222 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 1512 transitions. Word has length 22 [2022-03-15 17:26:38,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:26:38,223 INFO L470 AbstractCegarLoop]: Abstraction has 504 states and 1512 transitions. [2022-03-15 17:26:38,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 2.8292682926829267) internal successors, (116), 41 states have internal predecessors, (116), 0 states have call successors, (0), 0 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 17:26:38,223 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 1512 transitions. [2022-03-15 17:26:38,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 17:26:38,224 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:26:38,224 INFO L514 BasicCegarLoop]: trace histogram [12, 3, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:26:38,253 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 17:26:38,439 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 17:26:38,440 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:26:38,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:26:38,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1330383012, now seen corresponding path program 3 times [2022-03-15 17:26:38,442 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:26:38,442 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652722217] [2022-03-15 17:26:38,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:26:38,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:26:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:26:38,871 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:26:38,871 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:26:38,871 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652722217] [2022-03-15 17:26:38,872 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652722217] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:26:38,872 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260146976] [2022-03-15 17:26:38,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 17:26:38,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:26:38,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:26:38,873 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 17:26:38,874 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 17:26:38,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-03-15 17:26:38,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:26:38,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-15 17:26:38,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:26:39,630 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 55 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:26:39,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:27:04,695 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:27:04,695 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260146976] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:27:04,695 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:27:04,695 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 48 [2022-03-15 17:27:04,695 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [648846807] [2022-03-15 17:27:04,695 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:27:04,698 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:27:04,727 INFO L252 McrAutomatonBuilder]: Finished intersection with 83 states and 142 transitions. [2022-03-15 17:27:04,727 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:27:08,245 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 37 new interpolants: [25122#(and (<= 144 (+ ~prev~0 ~cur~0)) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0 (* 2 ~j~0)))), 25119#(and (<= (+ 143 ~i~0) (+ (* 3 ~j~0) (* ~prev~0 55) (* ~cur~0 89))) (= ~j~0 1) (<= 144 (+ (* ~prev~0 55) (* ~cur~0 89)))), 25128#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13) (* 2 ~j~0))) (<= 144 (+ (* ~cur~0 21) (* ~prev~0 13)))), 25114#(and (<= 144 (+ (* ~prev~0 5) (* ~cur~0 8))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8) (* 3 ~j~0)))), 25140#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13) ~j~0)) (= ~j~0 1) (<= 144 (+ (* ~cur~0 21) (* ~prev~0 13)))), 25117#(and (<= 144 (+ (* ~cur~0 34) (* ~prev~0 21))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* 3 ~j~0) (* ~cur~0 34) (* ~prev~0 21)))), 25113#(and (<= 144 (+ (* 5 ~cur~0) (* ~prev~0 3))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) (* 3 ~j~0) (* ~prev~0 3)))), 25145#(and (<= 144 (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 143 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (= ~j~0 1)), 25136#(and (= ~j~0 1) (<= 144 (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2) ~j~0))), 25138#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8) ~j~0)) (<= 144 (+ (* ~prev~0 5) (* ~cur~0 8))) (= ~j~0 1)), 25116#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13) (* 3 ~j~0))) (= ~j~0 1) (<= 144 (+ (* ~cur~0 21) (* ~prev~0 13)))), 25133#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~cur~0 ~j~0)) (<= 144 ~cur~0)), 25137#(and (<= 144 (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) ~j~0 (* ~prev~0 3))) (= ~j~0 1)), 25144#(and (<= 144 (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 143 ~i~0) (+ (* ~prev~0 89) ~j~0 (* ~cur~0 144))) (= ~j~0 1)), 25127#(and (<= (+ 143 ~i~0) (+ (* 2 ~j~0) (* ~prev~0 8) (* ~cur~0 13))) (= ~j~0 1) (<= 144 (+ (* ~prev~0 8) (* ~cur~0 13)))), 25130#(and (<= (+ 143 ~i~0) (+ (* 2 ~j~0) (* ~cur~0 55) (* ~prev~0 34))) (= ~j~0 1) (<= 144 (+ (* ~cur~0 55) (* ~prev~0 34)))), 25131#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* 2 ~j~0) (* ~prev~0 55) (* ~cur~0 89))) (<= 144 (+ (* ~prev~0 55) (* ~cur~0 89)))), 25139#(and (= ~j~0 1) (<= 144 (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 143 ~i~0) (+ (* ~prev~0 8) ~j~0 (* ~cur~0 13)))), 25124#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2) (* 2 ~j~0))) (= ~j~0 1) (<= 144 (+ (* ~cur~0 3) (* ~prev~0 2)))), 25141#(and (<= 144 (+ (* ~cur~0 34) (* ~prev~0 21))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~j~0 (* ~cur~0 34) (* ~prev~0 21)))), 25126#(and (<= 144 (+ (* ~prev~0 5) (* ~cur~0 8))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8) (* 2 ~j~0)))), 25123#(and (<= 144 (+ ~prev~0 (* ~cur~0 2))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~prev~0 (* 2 ~j~0) (* ~cur~0 2)))), 25129#(and (<= (+ 143 ~i~0) (+ (* 2 ~j~0) (* ~cur~0 34) (* ~prev~0 21))) (<= 144 (+ (* ~cur~0 34) (* ~prev~0 21))) (= ~j~0 1)), 25121#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~cur~0 (* 2 ~j~0))) (<= 144 ~cur~0)), 25120#(and (<= 144 (+ (* ~prev~0 89) (* ~cur~0 144))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* ~prev~0 89) (* 3 ~j~0) (* ~cur~0 144)))), 25142#(and (<= (+ 143 ~i~0) (+ ~j~0 (* ~cur~0 55) (* ~prev~0 34))) (= ~j~0 1) (<= 144 (+ (* ~cur~0 55) (* ~prev~0 34)))), 25135#(and (<= 144 (+ ~prev~0 (* ~cur~0 2))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~prev~0 ~j~0 (* ~cur~0 2)))), 25132#(and (<= 144 (+ (* ~prev~0 89) (* ~cur~0 144))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* ~prev~0 89) (* 2 ~j~0) (* ~cur~0 144)))), 25110#(and (<= 144 (+ ~prev~0 ~cur~0)) (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0 (* 3 ~j~0))) (= ~j~0 1)), 25112#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2) (* 3 ~j~0))) (<= 144 (+ (* ~cur~0 3) (* ~prev~0 2)))), 25125#(and (<= 144 (+ (* 5 ~cur~0) (* ~prev~0 3))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) (* 2 ~j~0) (* ~prev~0 3)))), 25118#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ (* 3 ~j~0) (* ~cur~0 55) (* ~prev~0 34))) (<= 144 (+ (* ~cur~0 55) (* ~prev~0 34)))), 25115#(and (<= (+ 143 ~i~0) (+ (* 3 ~j~0) (* ~prev~0 8) (* ~cur~0 13))) (= ~j~0 1) (<= 144 (+ (* ~prev~0 8) (* ~cur~0 13)))), 25111#(and (<= 144 (+ ~prev~0 (* ~cur~0 2))) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~prev~0 (* 3 ~j~0) (* ~cur~0 2)))), 25109#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~cur~0 (* 3 ~j~0))) (<= 144 ~cur~0)), 25143#(and (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~j~0 (* ~prev~0 55) (* ~cur~0 89))) (<= 144 (+ (* ~prev~0 55) (* ~cur~0 89)))), 25134#(and (<= 144 (+ ~prev~0 ~cur~0)) (= ~j~0 1) (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0 ~j~0)))] [2022-03-15 17:27:08,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-03-15 17:27:08,245 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:27:08,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-03-15 17:27:08,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=539, Invalid=6936, Unknown=7, NotChecked=0, Total=7482 [2022-03-15 17:27:08,246 INFO L87 Difference]: Start difference. First operand 504 states and 1512 transitions. Second operand has 55 states, 54 states have (on average 2.2037037037037037) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 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 17:27:19,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:27:19,011 INFO L93 Difference]: Finished difference Result 2942 states and 8263 transitions. [2022-03-15 17:27:19,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2022-03-15 17:27:19,011 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 54 states have (on average 2.2037037037037037) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 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 17:27:19,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:27:19,022 INFO L225 Difference]: With dead ends: 2942 [2022-03-15 17:27:19,022 INFO L226 Difference]: Without dead ends: 2916 [2022-03-15 17:27:19,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 22 SyntacticMatches, 11 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14300 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=9770, Invalid=28053, Unknown=7, NotChecked=0, Total=37830 [2022-03-15 17:27:19,026 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 731 mSDsluCounter, 1955 mSDsCounter, 0 mSdLazyCounter, 3601 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 3884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 3601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-03-15 17:27:19,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [731 Valid, 0 Invalid, 3884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 3601 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-03-15 17:27:19,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2916 states. [2022-03-15 17:27:19,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2916 to 548. [2022-03-15 17:27:19,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 547 states have (on average 3.0511882998171846) internal successors, (1669), 547 states have internal predecessors, (1669), 0 states have call successors, (0), 0 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 17:27:19,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 1669 transitions. [2022-03-15 17:27:19,069 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 1669 transitions. Word has length 22 [2022-03-15 17:27:19,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:27:19,069 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 1669 transitions. [2022-03-15 17:27:19,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 54 states have (on average 2.2037037037037037) internal successors, (119), 54 states have internal predecessors, (119), 0 states have call successors, (0), 0 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 17:27:19,079 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 1669 transitions. [2022-03-15 17:27:19,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-15 17:27:19,081 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:27:19,081 INFO L514 BasicCegarLoop]: trace histogram [12, 4, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:27:19,101 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 17:27:19,301 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 17:27:19,302 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:27:19,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:27:19,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1383550753, now seen corresponding path program 4 times [2022-03-15 17:27:19,304 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:27:19,304 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748506551] [2022-03-15 17:27:19,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:27:19,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:27:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:27:19,642 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:27:19,642 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:27:19,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748506551] [2022-03-15 17:27:19,642 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748506551] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:27:19,642 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315328508] [2022-03-15 17:27:19,642 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 17:27:19,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:27:19,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:27:19,644 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 17:27:19,645 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 17:27:19,718 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 17:27:19,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:27:19,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 44 conjunts are in the unsatisfiable core [2022-03-15 17:27:19,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:27:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:27:20,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:28:32,489 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:28:32,489 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315328508] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:28:32,489 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:28:32,489 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 51 [2022-03-15 17:28:32,490 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1363829011] [2022-03-15 17:28:32,490 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:28:32,491 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:28:32,500 INFO L252 McrAutomatonBuilder]: Finished intersection with 89 states and 153 transitions. [2022-03-15 17:28:32,501 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:28:38,500 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 48 new interpolants: [29590#(and (<= (+ ~j~0 139 (* 3 ~i~0)) ~cur~0) (<= (+ 143 ~i~0) ~cur~0)), 29587#(and (<= (+ ~j~0 139 (* 2 ~i~0)) ~prev~0) (<= (+ 143 ~i~0) ~prev~0)), 29624#(and (<= (+ 143 ~i~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ (* ~i~0 4) ~j~0 139) (+ ~prev~0 (* ~cur~0 2)))), 29600#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ ~j~0 ~i~0 139) (+ (* ~prev~0 5) (* ~cur~0 8)))), 29598#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 29592#(and (<= (+ (* ~i~0 4) ~j~0 139) ~cur~0) (<= (+ 143 ~i~0) ~cur~0)), 29593#(and (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0)) (<= (+ ~j~0 ~i~0 139) (+ ~prev~0 ~cur~0))), 29596#(and (<= (+ (* ~i~0 4) ~j~0 139) (+ ~prev~0 ~cur~0)) (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0))), 29603#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 143 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 29612#(and (<= (+ ~j~0 139 (* 2 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 143 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 29616#(and (<= (+ ~j~0 139 (* 3 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 29606#(and (<= (+ ~j~0 139 (* 2 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 29605#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ ~j~0 139 (* 2 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2)))), 29609#(and (<= (+ ~j~0 139 (* 2 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 29595#(and (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0)) (<= (+ ~j~0 139 (* 3 ~i~0)) (+ ~prev~0 ~cur~0))), 29597#(and (<= (+ 143 ~i~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ ~j~0 ~i~0 139) (+ ~prev~0 (* ~cur~0 2)))), 29625#(and (<= (+ (* ~i~0 4) ~j~0 139) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 143 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 29607#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ ~j~0 139 (* 2 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8)))), 29631#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ (* ~i~0 4) ~j~0 139) (+ (* ~cur~0 55) (* ~prev~0 34)))), 29599#(and (<= (+ ~j~0 ~i~0 139) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 29611#(and (<= (+ 143 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 55) (* ~prev~0 34)))), 29618#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ ~j~0 139 (* 3 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8)))), 29604#(and (<= (+ 143 ~i~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ ~j~0 139 (* 2 ~i~0)) (+ ~prev~0 (* ~cur~0 2)))), 29591#(and (<= (+ (* ~i~0 4) ~j~0 139) ~prev~0) (<= (+ 143 ~i~0) ~prev~0)), 29628#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ (* ~i~0 4) ~j~0 139) (+ (* ~prev~0 8) (* ~cur~0 13)))), 29614#(and (<= (+ ~j~0 139 (* 2 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 143 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 29627#(and (<= (+ (* ~i~0 4) ~j~0 139) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 143 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8)))), 29629#(and (<= (+ (* ~i~0 4) ~j~0 139) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 29623#(and (<= (+ ~j~0 139 (* 3 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 143 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 29589#(and (<= (+ ~j~0 139 (* 3 ~i~0)) ~prev~0) (<= (+ 143 ~i~0) ~prev~0)), 29632#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ (* ~i~0 4) ~j~0 139) (+ (* ~prev~0 55) (* ~cur~0 89)))), 29622#(and (<= (+ ~j~0 139 (* 3 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 143 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 29610#(and (<= (+ ~j~0 139 (* 2 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 143 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 29615#(and (<= (+ ~j~0 139 (* 3 ~i~0)) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 143 ~i~0) (+ ~prev~0 (* ~cur~0 2)))), 29613#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 143 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 29621#(and (<= (+ ~j~0 139 (* 3 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 143 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 29594#(and (<= (+ ~j~0 139 (* 2 ~i~0)) (+ ~prev~0 ~cur~0)) (<= (+ 143 ~i~0) (+ ~prev~0 ~cur~0))), 29626#(and (<= (+ (* ~i~0 4) ~j~0 139) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 29619#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ ~j~0 139 (* 3 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13)))), 29608#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ ~j~0 139 (* 2 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13)))), 29630#(and (<= (+ (* ~i~0 4) ~j~0 139) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 143 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 29585#(and (<= (+ 143 ~i~0) ~prev~0) (<= (+ ~j~0 ~i~0 139) ~prev~0)), 29601#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 143 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 29588#(and (<= (+ ~j~0 139 (* 2 ~i~0)) ~cur~0) (<= (+ 143 ~i~0) ~cur~0)), 29586#(and (<= (+ ~j~0 ~i~0 139) ~cur~0) (<= (+ 143 ~i~0) ~cur~0)), 29620#(and (<= (+ ~j~0 139 (* 3 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 29617#(and (<= (+ ~j~0 139 (* 3 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 143 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 29602#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 143 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13))))] [2022-03-15 17:28:38,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2022-03-15 17:28:38,500 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:28:38,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2022-03-15 17:28:38,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=733, Invalid=9347, Unknown=20, NotChecked=0, Total=10100 [2022-03-15 17:28:38,501 INFO L87 Difference]: Start difference. First operand 548 states and 1669 transitions. Second operand has 67 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:28:48,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:28:48,097 INFO L93 Difference]: Finished difference Result 730 states and 2146 transitions. [2022-03-15 17:28:48,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-03-15 17:28:48,097 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-03-15 17:28:48,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:28:48,100 INFO L225 Difference]: With dead ends: 730 [2022-03-15 17:28:48,100 INFO L226 Difference]: Without dead ends: 716 [2022-03-15 17:28:48,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4616 ImplicationChecksByTransitivity, 65.0s TimeCoverageRelationStatistics Valid=1341, Invalid=21895, Unknown=20, NotChecked=0, Total=23256 [2022-03-15 17:28:48,101 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 646 mSDsluCounter, 3488 mSDsCounter, 0 mSdLazyCounter, 6129 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-03-15 17:28:48,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [646 Valid, 0 Invalid, 6133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6129 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-03-15 17:28:48,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-03-15 17:28:48,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 590. [2022-03-15 17:28:48,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 589 states have (on average 3.089983022071307) internal successors, (1820), 589 states have internal predecessors, (1820), 0 states have call successors, (0), 0 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 17:28:48,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 1820 transitions. [2022-03-15 17:28:48,120 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 1820 transitions. Word has length 23 [2022-03-15 17:28:48,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:28:48,120 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 1820 transitions. [2022-03-15 17:28:48,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:28:48,120 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 1820 transitions. [2022-03-15 17:28:48,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-15 17:28:48,121 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:28:48,121 INFO L514 BasicCegarLoop]: trace histogram [12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:28:48,138 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 17:28:48,337 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 17:28:48,338 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:28:48,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:28:48,338 INFO L85 PathProgramCache]: Analyzing trace with hash -381616159, now seen corresponding path program 3 times [2022-03-15 17:28:48,340 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:28:48,340 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513772261] [2022-03-15 17:28:48,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:28:48,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:28:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:28:48,729 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:28:48,729 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:28:48,729 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513772261] [2022-03-15 17:28:48,729 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513772261] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:28:48,729 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476066600] [2022-03-15 17:28:48,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 17:28:48,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:28:48,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:28:48,730 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 17:28:48,731 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 17:28:48,810 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-03-15 17:28:48,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:28:48,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-15 17:28:48,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:28:49,662 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:28:49,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:29:31,908 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:29:31,909 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476066600] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:29:31,909 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:29:31,909 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 48 [2022-03-15 17:29:31,909 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1763928462] [2022-03-15 17:29:31,909 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:29:31,910 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:29:31,927 INFO L252 McrAutomatonBuilder]: Finished intersection with 133 states and 280 transitions. [2022-03-15 17:29:31,928 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:29:37,174 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 39 new interpolants: [31853#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89)))), 31847#(and (<= (+ 141 ~j~0 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 31831#(and (<= (+ 141 ~j~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 140 ~i~0) (+ ~prev~0 (* ~cur~0 2)))), 31865#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34)))), 31829#(and (<= (+ 140 ~i~0) ~cur~0) (<= (+ 141 ~j~0) ~cur~0)), 31860#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 31863#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13)))), 31846#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2)))), 31867#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 89) (* ~cur~0 144)))), 31858#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ ~prev~0 (* ~cur~0 2)))), 31856#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) ~cur~0) (<= (+ 141 ~j~0 (* 2 ~i~0)) ~cur~0)), 31832#(and (<= (+ 141 ~j~0) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 140 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 31837#(and (<= (+ 140 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 141 ~j~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 31843#(and (<= (+ 141 ~j~0 ~i~0) ~cur~0) (<= (+ 140 ~j~0 (* 2 ~i~0)) ~cur~0)), 31845#(and (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 141 ~j~0 ~i~0) (+ ~prev~0 (* ~cur~0 2)))), 31840#(and (<= (+ 140 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 141 ~j~0) (+ (* ~prev~0 89) (* ~cur~0 144)))), 31850#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13)))), 31836#(and (<= (+ 141 ~j~0) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 140 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 31848#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8)))), 31855#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) ~prev~0) (<= (+ 141 ~j~0 (* 2 ~i~0)) ~prev~0)), 31835#(and (<= (+ 141 ~j~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 140 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 31859#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2)))), 31857#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ ~prev~0 ~cur~0)) (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ ~prev~0 ~cur~0))), 31862#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13)))), 31866#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89)))), 31842#(and (<= (+ 140 ~j~0 (* 2 ~i~0)) ~prev~0) (<= (+ 141 ~j~0 ~i~0) ~prev~0)), 31844#(and (<= (+ 141 ~j~0 ~i~0) (+ ~prev~0 ~cur~0)) (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ ~prev~0 ~cur~0))), 31854#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 89) (* ~cur~0 144)))), 31841#(and (<= (+ 140 ~j~0 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 141 ~j~0) (+ (* ~prev~0 89) (* ~cur~0 144)))), 31833#(and (<= (+ 141 ~j~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 140 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 31838#(and (<= (+ 140 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 141 ~j~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 31834#(and (<= (+ 141 ~j~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 140 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8)))), 31849#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13)))), 31864#(and (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21)))), 31830#(and (<= (+ 140 ~i~0) (+ ~prev~0 ~cur~0)) (<= (+ 141 ~j~0) (+ ~prev~0 ~cur~0))), 31861#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 140 ~j~0 (* 3 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8)))), 31851#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21)))), 31852#(and (<= (+ 140 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 141 ~j~0 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 31839#(and (<= (+ 141 ~j~0) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 140 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89))))] [2022-03-15 17:29:37,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-03-15 17:29:37,175 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:29:37,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-03-15 17:29:37,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=688, Invalid=7136, Unknown=8, NotChecked=0, Total=7832 [2022-03-15 17:29:37,176 INFO L87 Difference]: Start difference. First operand 590 states and 1820 transitions. Second operand has 57 states, 56 states have (on average 2.8392857142857144) internal successors, (159), 56 states have internal predecessors, (159), 0 states have call successors, (0), 0 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 17:30:42,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:30:42,063 INFO L93 Difference]: Finished difference Result 4695 states and 13639 transitions. [2022-03-15 17:30:42,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 421 states. [2022-03-15 17:30:42,064 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 2.8392857142857144) internal successors, (159), 56 states have internal predecessors, (159), 0 states have call successors, (0), 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 17:30:42,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:30:42,082 INFO L225 Difference]: With dead ends: 4695 [2022-03-15 17:30:42,082 INFO L226 Difference]: Without dead ends: 4612 [2022-03-15 17:30:42,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 80 SyntacticMatches, 2 SemanticMatches, 473 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83772 ImplicationChecksByTransitivity, 83.8s TimeCoverageRelationStatistics Valid=9793, Invalid=215349, Unknown=8, NotChecked=0, Total=225150 [2022-03-15 17:30:42,093 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1186 mSDsluCounter, 9370 mSDsCounter, 0 mSdLazyCounter, 20458 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 20458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2022-03-15 17:30:42,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1186 Valid, 0 Invalid, 20859 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [401 Valid, 20458 Invalid, 0 Unknown, 0 Unchecked, 15.8s Time] [2022-03-15 17:30:42,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4612 states. [2022-03-15 17:30:42,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4612 to 590. [2022-03-15 17:30:42,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 589 states have (on average 3.089983022071307) internal successors, (1820), 589 states have internal predecessors, (1820), 0 states have call successors, (0), 0 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 17:30:42,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 1820 transitions. [2022-03-15 17:30:42,128 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 1820 transitions. Word has length 23 [2022-03-15 17:30:42,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:30:42,128 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 1820 transitions. [2022-03-15 17:30:42,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 2.8392857142857144) internal successors, (159), 56 states have internal predecessors, (159), 0 states have call successors, (0), 0 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 17:30:42,128 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 1820 transitions. [2022-03-15 17:30:42,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-15 17:30:42,129 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:30:42,129 INFO L514 BasicCegarLoop]: trace histogram [12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:30:42,147 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 17:30:42,344 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 17:30:42,344 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:30:42,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:30:42,344 INFO L85 PathProgramCache]: Analyzing trace with hash -893908067, now seen corresponding path program 4 times [2022-03-15 17:30:42,346 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:30:42,346 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104626180] [2022-03-15 17:30:42,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:30:42,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:30:42,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:30:42,878 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:30:42,878 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:30:42,878 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104626180] [2022-03-15 17:30:42,878 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104626180] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:30:42,878 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104432541] [2022-03-15 17:30:42,878 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 17:30:42,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:30:42,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:30:42,880 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:30:42,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-15 17:30:42,973 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 17:30:42,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:30:42,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-15 17:30:42,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:30:43,884 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:30:43,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:31:43,923 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:31:43,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104432541] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:31:43,923 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:31:43,923 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 48 [2022-03-15 17:31:43,924 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [342352783] [2022-03-15 17:31:43,924 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:31:43,926 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:31:43,966 INFO L252 McrAutomatonBuilder]: Finished intersection with 119 states and 239 transitions. [2022-03-15 17:31:43,967 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:31:49,108 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 38 new interpolants: [38729#(and (<= (+ 141 ~j~0 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ (* 2 ~j~0) ~i~0 139) (+ (* ~prev~0 89) (* ~cur~0 144)))), 38713#(and (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2)))), 38719#(and (<= (+ ~j~0 139) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 141 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 38703#(and (<= (+ 141 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ ~j~0 139) (+ (* ~cur~0 3) (* ~prev~0 2)))), 38721#(and (<= (+ ~j~0 139) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 141 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 38730#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13)))), 38710#(and (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) ~cur~0) (<= (+ 141 ~j~0 (* 2 ~i~0)) ~cur~0)), 38698#(and (<= (+ ~j~0 ~i~0 139) ~cur~0) (<= (+ 141 ~i~0) ~cur~0)), 38723#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 141 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 38701#(and (<= (+ ~j~0 139) (+ ~prev~0 (* ~cur~0 2))) (<= (+ 141 ~i~0) (+ ~prev~0 (* ~cur~0 2)))), 38724#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 141 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 38697#(and (<= (+ ~j~0 139) ~cur~0) (<= (+ 141 ~i~0) ~cur~0)), 38718#(and (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13)))), 38717#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 141 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 38731#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21)))), 38705#(and (<= (+ 141 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ ~j~0 139) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 38699#(and (<= (+ ~j~0 139) (+ ~prev~0 ~cur~0)) (<= (+ 141 ~i~0) (+ ~prev~0 ~cur~0))), 38714#(and (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 38727#(and (<= (+ 141 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ ~j~0 139) (+ (* ~prev~0 89) (* ~cur~0 144)))), 38712#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ ~prev~0 (* ~cur~0 2))) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ ~prev~0 (* ~cur~0 2)))), 38720#(and (<= (+ ~j~0 139) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 141 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 38725#(and (<= (+ 141 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 55) (* ~prev~0 34)))), 38704#(and (<= (+ 141 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 3) (* ~prev~0 2)))), 38732#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34)))), 38711#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ ~prev~0 ~cur~0)) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ ~prev~0 ~cur~0))), 38726#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 141 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 38702#(and (<= (+ 141 ~i~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ ~j~0 ~i~0 139) (+ ~prev~0 (* ~cur~0 2)))), 38728#(and (<= (+ 141 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ ~j~0 ~i~0 139) (+ (* ~prev~0 89) (* ~cur~0 144)))), 38734#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~prev~0 89) (* ~cur~0 144)))), 38722#(and (<= (+ ~j~0 139) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 141 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 38709#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) ~prev~0) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) ~prev~0)), 38708#(and (<= (+ 141 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ ~j~0 ~i~0 139) (+ (* ~prev~0 5) (* ~cur~0 8)))), 38700#(and (<= (+ 141 ~i~0) (+ ~prev~0 ~cur~0)) (<= (+ ~j~0 ~i~0 139) (+ ~prev~0 ~cur~0))), 38706#(and (<= (+ 141 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ ~j~0 ~i~0 139) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 38716#(and (<= (+ ~j~0 139) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 141 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 38733#(and (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89)))), 38715#(and (<= (+ 141 ~j~0 (* 2 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8)))), 38707#(and (<= (+ ~j~0 139) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 141 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))))] [2022-03-15 17:31:49,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-03-15 17:31:49,109 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:31:49,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-03-15 17:31:49,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=681, Invalid=6960, Unknown=15, NotChecked=0, Total=7656 [2022-03-15 17:31:49,115 INFO L87 Difference]: Start difference. First operand 590 states and 1820 transitions. Second operand has 56 states, 55 states have (on average 2.6) internal successors, (143), 55 states have internal predecessors, (143), 0 states have call successors, (0), 0 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 17:32:38,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:32:38,176 INFO L93 Difference]: Finished difference Result 4124 states and 12047 transitions. [2022-03-15 17:32:38,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 347 states. [2022-03-15 17:32:38,177 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.6) internal successors, (143), 55 states have internal predecessors, (143), 0 states have call successors, (0), 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 17:32:38,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:32:38,185 INFO L225 Difference]: With dead ends: 4124 [2022-03-15 17:32:38,185 INFO L226 Difference]: Without dead ends: 4058 [2022-03-15 17:32:38,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 398 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56597 ImplicationChecksByTransitivity, 81.4s TimeCoverageRelationStatistics Valid=7586, Invalid=151999, Unknown=15, NotChecked=0, Total=159600 [2022-03-15 17:32:38,192 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1603 mSDsluCounter, 10045 mSDsCounter, 0 mSdLazyCounter, 21858 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 21858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.7s IncrementalHoareTripleChecker+Time [2022-03-15 17:32:38,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1603 Valid, 0 Invalid, 22253 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [395 Valid, 21858 Invalid, 0 Unknown, 0 Unchecked, 14.7s Time] [2022-03-15 17:32:38,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4058 states. [2022-03-15 17:32:38,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4058 to 638. [2022-03-15 17:32:38,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 637 states have (on average 3.1899529042386185) internal successors, (2032), 637 states have internal predecessors, (2032), 0 states have call successors, (0), 0 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 17:32:38,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 2032 transitions. [2022-03-15 17:32:38,216 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 2032 transitions. Word has length 23 [2022-03-15 17:32:38,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:32:38,217 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 2032 transitions. [2022-03-15 17:32:38,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 2.6) internal successors, (143), 55 states have internal predecessors, (143), 0 states have call successors, (0), 0 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 17:32:38,217 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 2032 transitions. [2022-03-15 17:32:38,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-15 17:32:38,218 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:32:38,218 INFO L514 BasicCegarLoop]: trace histogram [12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:32:38,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-03-15 17:32:38,429 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-03-15 17:32:38,429 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:32:38,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:32:38,430 INFO L85 PathProgramCache]: Analyzing trace with hash -893908005, now seen corresponding path program 5 times [2022-03-15 17:32:38,432 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:32:38,432 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562497492] [2022-03-15 17:32:38,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:32:38,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:32:38,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:32:38,879 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:32:38,879 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:32:38,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562497492] [2022-03-15 17:32:38,879 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562497492] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:32:38,879 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419947880] [2022-03-15 17:32:38,879 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 17:32:38,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:32:38,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:32:38,881 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:32:38,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-15 17:32:38,975 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-03-15 17:32:38,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:32:38,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-15 17:32:38,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:32:39,814 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:32:39,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:33:09,271 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:33:09,271 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419947880] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:33:09,271 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:33:09,271 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 48 [2022-03-15 17:33:09,271 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1674437610] [2022-03-15 17:33:09,271 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:33:09,273 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:33:09,321 INFO L252 McrAutomatonBuilder]: Finished intersection with 119 states and 239 transitions. [2022-03-15 17:33:09,321 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:33:13,967 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 38 new interpolants: [44959#(and (<= (+ 142 ~j~0 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8)))), 44957#(and (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 142 ~j~0 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 44965#(and (<= (+ 142 ~j~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ ~i~0 139) (+ (* ~cur~0 55) (* ~prev~0 34)))), 44954#(and (<= (+ 142 ~j~0 ~i~0) ~cur~0) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) ~cur~0)), 44950#(and (<= (+ 142 ~j~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ ~j~0 ~i~0 139) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 44942#(and (<= (+ 142 ~j~0) (+ ~prev~0 ~cur~0)) (<= (+ ~i~0 139) (+ ~prev~0 ~cur~0))), 44970#(and (<= (+ 142 ~j~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 55) (* ~prev~0 34)))), 44971#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 142 ~j~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 44964#(and (<= (+ ~i~0 139) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 142 ~j~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 44976#(and (<= (+ 142 ~j~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ (* 2 ~j~0) ~i~0 139) (+ (* ~prev~0 89) (* ~cur~0 144)))), 44963#(and (<= (+ 142 ~j~0) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ ~i~0 139) (+ (* ~cur~0 21) (* ~prev~0 13)))), 44952#(and (<= (+ 142 ~j~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ ~j~0 ~i~0 139) (+ (* ~prev~0 5) (* ~cur~0 8)))), 44955#(and (<= (+ 142 ~j~0 ~i~0) (+ ~prev~0 ~cur~0)) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ ~prev~0 ~cur~0))), 44941#(and (<= (+ ~i~0 139) ~cur~0) (<= (+ 142 ~j~0) ~cur~0)), 44945#(and (<= (+ 142 ~j~0) (+ ~prev~0 ~cur~0)) (<= (+ ~j~0 ~i~0 139) (+ ~prev~0 ~cur~0))), 44953#(and (<= (+ 142 ~j~0 ~i~0) ~prev~0) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) ~prev~0)), 44960#(and (<= (+ ~i~0 139) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 142 ~j~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 44956#(and (<= (+ 142 ~j~0 ~i~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ ~prev~0 (* ~cur~0 2)))), 44975#(and (<= (+ 142 ~j~0 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34)))), 44978#(and (<= (+ 142 ~j~0 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~prev~0 89) (* ~cur~0 144)))), 44968#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 142 ~j~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 44951#(and (<= (+ 142 ~j~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ ~i~0 139) (+ (* ~prev~0 5) (* ~cur~0 8)))), 44977#(and (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 142 ~j~0 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 44967#(and (<= (+ 142 ~j~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ ~i~0 139) (+ (* ~prev~0 89) (* ~cur~0 144)))), 44972#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 142 ~j~0) (+ (* ~prev~0 89) (* ~cur~0 144)))), 44947#(and (<= (+ ~i~0 139) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 142 ~j~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 44943#(and (<= (+ 142 ~j~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ ~i~0 139) (+ ~prev~0 (* ~cur~0 2)))), 44946#(and (<= (+ 142 ~j~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ ~j~0 ~i~0 139) (+ ~prev~0 (* ~cur~0 2)))), 44969#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 142 ~j~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 44962#(and (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 142 ~j~0 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 44973#(and (<= (+ 142 ~j~0 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13)))), 44966#(and (<= (+ ~i~0 139) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 142 ~j~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 44949#(and (<= (+ ~i~0 139) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ 142 ~j~0) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 44958#(and (<= (+ 142 ~j~0 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 44974#(and (<= (+ 142 ~j~0 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ (* 2 ~j~0) 139 (* 3 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21)))), 44948#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 142 ~j~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 44961#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 142 ~j~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 44944#(and (<= (+ ~j~0 ~i~0 139) ~cur~0) (<= (+ 142 ~j~0) ~cur~0))] [2022-03-15 17:33:13,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-03-15 17:33:13,968 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:33:13,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-03-15 17:33:13,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=6971, Unknown=6, NotChecked=0, Total=7656 [2022-03-15 17:33:13,968 INFO L87 Difference]: Start difference. First operand 638 states and 2032 transitions. Second operand has 56 states, 55 states have (on average 2.6) internal successors, (143), 55 states have internal predecessors, (143), 0 states have call successors, (0), 0 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 17:33:46,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:33:46,241 INFO L93 Difference]: Finished difference Result 2807 states and 8197 transitions. [2022-03-15 17:33:46,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 256 states. [2022-03-15 17:33:46,242 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 2.6) internal successors, (143), 55 states have internal predecessors, (143), 0 states have call successors, (0), 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 17:33:46,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:33:46,247 INFO L225 Difference]: With dead ends: 2807 [2022-03-15 17:33:46,247 INFO L226 Difference]: Without dead ends: 2761 [2022-03-15 17:33:46,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 316 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32718 ImplicationChecksByTransitivity, 46.8s TimeCoverageRelationStatistics Valid=5120, Invalid=95680, Unknown=6, NotChecked=0, Total=100806 [2022-03-15 17:33:46,251 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1163 mSDsluCounter, 7343 mSDsCounter, 0 mSdLazyCounter, 15552 mSolverCounterSat, 369 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1163 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 15921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 369 IncrementalHoareTripleChecker+Valid, 15552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:33:46,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1163 Valid, 0 Invalid, 15921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [369 Valid, 15552 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-03-15 17:33:46,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2761 states. [2022-03-15 17:33:46,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2761 to 652. [2022-03-15 17:33:46,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 651 states have (on average 3.162826420890937) internal successors, (2059), 651 states have internal predecessors, (2059), 0 states have call successors, (0), 0 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 17:33:46,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 2059 transitions. [2022-03-15 17:33:46,274 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 2059 transitions. Word has length 23 [2022-03-15 17:33:46,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:33:46,274 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 2059 transitions. [2022-03-15 17:33:46,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 2.6) internal successors, (143), 55 states have internal predecessors, (143), 0 states have call successors, (0), 0 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 17:33:46,274 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 2059 transitions. [2022-03-15 17:33:46,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-15 17:33:46,276 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:33:46,276 INFO L514 BasicCegarLoop]: trace histogram [12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:33:46,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-15 17:33:46,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-03-15 17:33:46,493 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-03-15 17:33:46,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:33:46,493 INFO L85 PathProgramCache]: Analyzing trace with hash 404911969, now seen corresponding path program 6 times [2022-03-15 17:33:46,496 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:33:46,496 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879438738] [2022-03-15 17:33:46,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:33:46,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:33:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:33:47,015 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:33:47,015 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:33:47,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879438738] [2022-03-15 17:33:47,015 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879438738] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:33:47,015 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197407438] [2022-03-15 17:33:47,015 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 17:33:47,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:33:47,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:33:47,017 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:33:47,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-15 17:33:47,100 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2022-03-15 17:33:47,100 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:33:47,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-15 17:33:47,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:33:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:33:48,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:34:07,747 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:34:07,748 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197407438] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:34:07,748 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:34:07,748 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 48 [2022-03-15 17:34:07,748 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [289432078] [2022-03-15 17:34:07,748 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:34:07,750 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:34:07,765 INFO L252 McrAutomatonBuilder]: Finished intersection with 121 states and 243 transitions. [2022-03-15 17:34:07,765 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:34:13,694 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 37 new interpolants: [49760#(and (<= (+ 142 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 55) (* ~prev~0 34)))), 49738#(and (<= (+ 142 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ ~j~0 139) (+ (* ~prev~0 8) (* ~cur~0 13)))), 49751#(and (<= (+ ~j~0 139 (* 2 ~i~0)) (+ ~prev~0 ~cur~0)) (= ~j~0 1) (<= (+ 142 ~i~0) (+ ~prev~0 ~cur~0))), 49757#(and (<= (+ 142 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13))) (= ~j~0 1) (<= (+ ~j~0 139 (* 2 ~i~0)) (+ (* ~cur~0 21) (* ~prev~0 13)))), 49767#(and (= ~j~0 1) (<= (+ ~j~0 139 (* 2 ~i~0)) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 142 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144)))), 49766#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 142 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144)))), 49747#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ 142 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13)))), 49744#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 142 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 49750#(and (= ~j~0 1) (<= (+ ~j~0 139 (* 2 ~i~0)) ~cur~0) (<= (+ 142 ~i~0) ~cur~0)), 49742#(and (<= (+ 142 ~i~0) (+ ~prev~0 ~cur~0)) (<= (+ ~j~0 ~i~0 139) (+ ~prev~0 ~cur~0))), 49752#(and (<= (+ 142 ~i~0) (+ ~prev~0 (* ~cur~0 2))) (= ~j~0 1) (<= (+ ~j~0 139 (* 2 ~i~0)) (+ ~prev~0 (* ~cur~0 2)))), 49735#(and (<= (+ ~j~0 139) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 142 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 49753#(and (= ~j~0 1) (<= (+ ~j~0 139 (* 2 ~i~0)) (+ (* ~cur~0 3) (* ~prev~0 2))) (<= (+ 142 ~i~0) (+ (* ~cur~0 3) (* ~prev~0 2)))), 49736#(and (<= (+ 142 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ ~j~0 139) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 49761#(and (<= (+ ~j~0 139 (* 2 ~i~0)) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 142 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34))) (= ~j~0 1)), 49743#(and (<= (+ 142 ~i~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ ~j~0 ~i~0 139) (+ ~prev~0 (* ~cur~0 2)))), 49739#(and (<= (+ ~j~0 139) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 142 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 49746#(and (<= (+ 142 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ ~j~0 ~i~0 139) (+ (* ~prev~0 5) (* ~cur~0 8)))), 49737#(and (<= (+ ~j~0 139) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ 142 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8)))), 49764#(and (<= (+ ~j~0 139 (* 2 ~i~0)) (+ (* ~prev~0 55) (* ~cur~0 89))) (= ~j~0 1) (<= (+ 142 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 49732#(and (<= (+ ~j~0 139) ~cur~0) (<= (+ 142 ~i~0) ~cur~0)), 49765#(and (<= (+ ~j~0 139) (+ (* ~prev~0 89) (* ~cur~0 144))) (<= (+ 142 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144)))), 49740#(and (<= (+ ~j~0 139) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 142 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 49762#(and (<= (+ ~j~0 139) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 142 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 49734#(and (<= (+ 142 ~i~0) (+ ~prev~0 (* ~cur~0 2))) (<= (+ ~j~0 139) (+ ~prev~0 (* ~cur~0 2)))), 49749#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 34) (* ~prev~0 21))) (<= (+ 142 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 49758#(and (<= (+ ~j~0 139 (* 2 ~i~0)) (+ (* ~cur~0 34) (* ~prev~0 21))) (= ~j~0 1) (<= (+ 142 ~i~0) (+ (* ~cur~0 34) (* ~prev~0 21)))), 49763#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~prev~0 55) (* ~cur~0 89))) (<= (+ 142 ~i~0) (+ (* ~prev~0 55) (* ~cur~0 89)))), 49741#(and (<= (+ ~j~0 ~i~0 139) ~cur~0) (<= (+ 142 ~i~0) ~cur~0)), 49754#(and (<= (+ 142 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ ~j~0 139 (* 2 ~i~0)) (+ (* 5 ~cur~0) (* ~prev~0 3))) (= ~j~0 1)), 49745#(and (<= (+ 142 ~i~0) (+ (* 5 ~cur~0) (* ~prev~0 3))) (<= (+ ~j~0 ~i~0 139) (+ (* 5 ~cur~0) (* ~prev~0 3)))), 49733#(and (<= (+ ~j~0 139) (+ ~prev~0 ~cur~0)) (<= (+ 142 ~i~0) (+ ~prev~0 ~cur~0))), 49759#(and (<= (+ ~j~0 139) (+ (* ~cur~0 55) (* ~prev~0 34))) (<= (+ 142 ~i~0) (+ (* ~cur~0 55) (* ~prev~0 34)))), 49748#(and (<= (+ ~j~0 ~i~0 139) (+ (* ~cur~0 21) (* ~prev~0 13))) (<= (+ 142 ~i~0) (+ (* ~cur~0 21) (* ~prev~0 13)))), 49755#(and (= ~j~0 1) (<= (+ 142 ~i~0) (+ (* ~prev~0 5) (* ~cur~0 8))) (<= (+ ~j~0 139 (* 2 ~i~0)) (+ (* ~prev~0 5) (* ~cur~0 8)))), 49768#(and (<= (+ 143 ~i~0) (+ (* ~prev~0 89) (* ~cur~0 144))) (= ~j~0 1) (<= (+ 142 (* 2 ~i~0)) (+ (* ~prev~0 89) (* ~cur~0 144)))), 49756#(and (= ~j~0 1) (<= (+ 142 ~i~0) (+ (* ~prev~0 8) (* ~cur~0 13))) (<= (+ ~j~0 139 (* 2 ~i~0)) (+ (* ~prev~0 8) (* ~cur~0 13))))] [2022-03-15 17:34:13,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-03-15 17:34:13,695 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:34:13,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-03-15 17:34:13,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=602, Invalid=6879, Unknown=1, NotChecked=0, Total=7482 [2022-03-15 17:34:13,695 INFO L87 Difference]: Start difference. First operand 652 states and 2059 transitions. Second operand has 55 states, 54 states have (on average 2.6296296296296298) internal successors, (142), 54 states have internal predecessors, (142), 0 states have call successors, (0), 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 17:35:02,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 342 states. [2022-03-15 17:35:02,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 477 GetRequests, 37 SyntacticMatches, 35 SemanticMatches, 404 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62450 ImplicationChecksByTransitivity, 55.2s TimeCoverageRelationStatistics Valid=23379, Invalid=141050, Unknown=1, NotChecked=0, Total=164430 [2022-03-15 17:35:02,817 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 412 mSDsluCounter, 5656 mSDsCounter, 0 mSdLazyCounter, 10632 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 10795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 10632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-03-15 17:35:02,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 0 Invalid, 10795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 10632 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-03-15 17:35:02,818 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-03-15 17:35:02,835 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-03-15 17:35:02,851 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 17:35:02,851 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 17:35:03,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-03-15 17:35:03,031 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was constructing difference of abstraction (652states) and FLOYD_HOARE automaton (currently 342 states, 55 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 406 known predicates. [2022-03-15 17:35:03,033 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-03-15 17:35:03,033 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-03-15 17:35:03,034 INFO L732 BasicCegarLoop]: Path program histogram: [13, 6, 4, 3, 1] [2022-03-15 17:35:03,035 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-03-15 17:35:03,035 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-15 17:35:03,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.03 05:35:03 BasicIcfg [2022-03-15 17:35:03,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-15 17:35:03,037 INFO L158 Benchmark]: Toolchain (without parser) took 869327.37ms. Allocated memory was 186.6MB in the beginning and 596.6MB in the end (delta: 410.0MB). Free memory was 130.2MB in the beginning and 399.1MB in the end (delta: -269.0MB). Peak memory consumption was 142.6MB. Max. memory is 8.0GB. [2022-03-15 17:35:03,037 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 186.6MB. Free memory is still 148.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 17:35:03,037 INFO L158 Benchmark]: CACSL2BoogieTranslator took 418.76ms. Allocated memory was 186.6MB in the beginning and 287.3MB in the end (delta: 100.7MB). Free memory was 160.3MB in the beginning and 248.9MB in the end (delta: -88.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-15 17:35:03,037 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.64ms. Allocated memory is still 287.3MB. Free memory was 248.9MB in the beginning and 246.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 17:35:03,037 INFO L158 Benchmark]: Boogie Preprocessor took 15.64ms. Allocated memory is still 287.3MB. Free memory was 246.8MB in the beginning and 245.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-15 17:35:03,037 INFO L158 Benchmark]: RCFGBuilder took 387.85ms. Allocated memory is still 287.3MB. Free memory was 245.8MB in the beginning and 232.7MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-15 17:35:03,038 INFO L158 Benchmark]: TraceAbstraction took 868460.68ms. Allocated memory was 287.3MB in the beginning and 596.6MB in the end (delta: 309.3MB). Free memory was 232.2MB in the beginning and 399.1MB in the end (delta: -167.0MB). Peak memory consumption was 143.4MB. Max. memory is 8.0GB. [2022-03-15 17:35:03,038 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 186.6MB. Free memory is still 148.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 418.76ms. Allocated memory was 186.6MB in the beginning and 287.3MB in the end (delta: 100.7MB). Free memory was 160.3MB in the beginning and 248.9MB in the end (delta: -88.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.64ms. Allocated memory is still 287.3MB. Free memory was 248.9MB in the beginning and 246.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.64ms. Allocated memory is still 287.3MB. Free memory was 246.8MB in the beginning and 245.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 387.85ms. Allocated memory is still 287.3MB. Free memory was 245.8MB in the beginning and 232.7MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 868460.68ms. Allocated memory was 287.3MB in the beginning and 596.6MB in the end (delta: 309.3MB). Free memory was 232.2MB in the beginning and 399.1MB in the end (delta: -167.0MB). Peak memory consumption was 143.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 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 (652states) and FLOYD_HOARE automaton (currently 342 states, 55 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 406 known predicates. - 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 (652states) and FLOYD_HOARE automaton (currently 342 states, 55 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 406 known predicates. - 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 (652states) and FLOYD_HOARE automaton (currently 342 states, 55 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 406 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 112 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 868.4s, OverallIterations: 27, TraceHistogramMax: 13, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 272.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9610 SdHoareTripleChecker+Valid, 79.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9610 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 70.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 60318 mSDsCounter, 2411 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 119839 IncrementalHoareTripleChecker+Invalid, 122250 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2411 mSolverCounterUnsat, 0 mSDtfsCounter, 119839 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3911 GetRequests, 738 SyntacticMatches, 120 SemanticMatches, 3052 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297770 ImplicationChecksByTransitivity, 616.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=652occurred in iteration=26, InterpolantAutomatonStates: 2004, 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, 26 MinimizatonAttempts, 19603 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 537.3s InterpolantComputationTime, 914 NumberOfCodeBlocks, 914 NumberOfCodeBlocksAsserted, 117 NumberOfCheckSat, 1271 ConstructedInterpolants, 172 QuantifiedInterpolants, 33370 SizeOfPredicates, 154 NumberOfNonLiveVariables, 5539 ConjunctsInSsa, 694 ConjunctsInUnsatCore, 78 InterpolantComputations, 2 PerfectInterpolantSequences, 940/4370 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