/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf -i ../../../trunk/examples/svcomp/pthread/triangular-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 16:20:34,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 16:20:34,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 16:20:34,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 16:20:34,621 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 16:20:34,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 16:20:34,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 16:20:34,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 16:20:34,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 16:20:34,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 16:20:34,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 16:20:34,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 16:20:34,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 16:20:34,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 16:20:34,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 16:20:34,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 16:20:34,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 16:20:34,640 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 16:20:34,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 16:20:34,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 16:20:34,647 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 16:20:34,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 16:20:34,650 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 16:20:34,651 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 16:20:34,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-09 16:20:34,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-09 16:20:34,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-09 16:20:34,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-09 16:20:34,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-09 16:20:34,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-09 16:20:34,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 16:20:34,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 16:20:34,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 16:20:34,671 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 16:20:34,672 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 16:20:34,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 16:20:34,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 16:20:34,674 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 16:20:34,674 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 16:20:34,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 16:20:34,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 16:20:34,677 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-SP.epf [2020-11-09 16:20:34,705 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 16:20:34,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 16:20:34,707 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 16:20:34,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 16:20:34,708 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 16:20:34,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 16:20:34,709 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 16:20:34,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 16:20:34,709 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 16:20:34,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 16:20:34,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 16:20:34,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 16:20:34,710 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 16:20:34,711 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 16:20:34,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 16:20:34,711 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 16:20:34,711 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 16:20:34,711 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 16:20:34,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 16:20:34,712 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 16:20:34,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 16:20:34,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 16:20:34,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 16:20:34,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 16:20:34,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 16:20:34,713 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 16:20:34,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 16:20:34,714 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 16:20:34,714 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 16:20:34,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 16:20:34,714 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 16:20:35,178 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 16:20:35,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 16:20:35,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 16:20:35,213 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 16:20:35,214 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 16:20:35,215 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-1.i [2020-11-09 16:20:35,293 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44343795f/a48686620f02498cb8cd981e713e3ee7/FLAGe09b47213 [2020-11-09 16:20:35,986 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 16:20:35,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-1.i [2020-11-09 16:20:36,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44343795f/a48686620f02498cb8cd981e713e3ee7/FLAGe09b47213 [2020-11-09 16:20:36,260 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44343795f/a48686620f02498cb8cd981e713e3ee7 [2020-11-09 16:20:36,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 16:20:36,274 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 16:20:36,279 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 16:20:36,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 16:20:36,284 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 16:20:36,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:20:36" (1/1) ... [2020-11-09 16:20:36,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cce68c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:20:36, skipping insertion in model container [2020-11-09 16:20:36,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:20:36" (1/1) ... [2020-11-09 16:20:36,308 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 16:20:36,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 16:20:36,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 16:20:36,918 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 16:20:37,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 16:20:37,111 INFO L208 MainTranslator]: Completed translation [2020-11-09 16:20:37,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:20:37 WrapperNode [2020-11-09 16:20:37,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 16:20:37,113 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 16:20:37,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 16:20:37,114 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 16:20:37,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:20:37" (1/1) ... [2020-11-09 16:20:37,138 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:20:37" (1/1) ... [2020-11-09 16:20:37,161 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 16:20:37,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 16:20:37,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 16:20:37,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 16:20:37,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:20:37" (1/1) ... [2020-11-09 16:20:37,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:20:37" (1/1) ... [2020-11-09 16:20:37,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:20:37" (1/1) ... [2020-11-09 16:20:37,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:20:37" (1/1) ... [2020-11-09 16:20:37,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:20:37" (1/1) ... [2020-11-09 16:20:37,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:20:37" (1/1) ... [2020-11-09 16:20:37,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:20:37" (1/1) ... [2020-11-09 16:20:37,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 16:20:37,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 16:20:37,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 16:20:37,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 16:20:37,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:20:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 16:20:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-11-09 16:20:37,272 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-11-09 16:20:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-11-09 16:20:37,272 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-11-09 16:20:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 16:20:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 16:20:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 16:20:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 16:20:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 16:20:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 16:20:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 16:20:37,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 16:20:37,276 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 16:20:37,642 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 16:20:37,643 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-09 16:20:37,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:20:37 BoogieIcfgContainer [2020-11-09 16:20:37,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 16:20:37,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 16:20:37,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 16:20:37,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 16:20:37,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:20:36" (1/3) ... [2020-11-09 16:20:37,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba64cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:20:37, skipping insertion in model container [2020-11-09 16:20:37,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:20:37" (2/3) ... [2020-11-09 16:20:37,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ba64cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:20:37, skipping insertion in model container [2020-11-09 16:20:37,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:20:37" (3/3) ... [2020-11-09 16:20:37,655 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2020-11-09 16:20:37,672 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 16:20:37,673 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 16:20:37,676 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 16:20:37,677 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 16:20:37,719 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,719 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,719 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,720 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,723 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,724 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,724 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,724 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,725 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,725 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,726 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,728 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,729 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,729 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,729 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,730 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,730 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,730 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,731 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,731 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,731 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,732 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,738 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,739 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,739 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,739 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,739 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,740 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,740 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,741 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,741 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,744 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,745 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,745 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,745 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,745 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,746 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,746 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,746 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,747 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,750 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,751 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,751 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,751 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,751 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,752 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,752 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,752 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,753 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,753 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,753 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,753 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,754 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,754 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,756 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,756 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,762 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,762 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,763 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,763 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,765 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,765 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,774 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,774 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,774 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,774 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,775 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,775 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 16:20:37,784 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 16:20:37,797 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-09 16:20:37,821 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 16:20:37,821 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 16:20:37,822 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 16:20:37,822 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 16:20:37,822 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 16:20:37,822 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 16:20:37,822 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 16:20:37,822 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 16:20:37,835 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 16:20:37,836 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 64 transitions, 138 flow [2020-11-09 16:20:37,840 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 64 transitions, 138 flow [2020-11-09 16:20:37,842 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 64 transitions, 138 flow [2020-11-09 16:20:37,885 INFO L129 PetriNetUnfolder]: 6/62 cut-off events. [2020-11-09 16:20:37,885 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 16:20:37,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 62 events. 6/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 97 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-11-09 16:20:37,894 INFO L116 LiptonReduction]: Number of co-enabled transitions 1144 [2020-11-09 16:20:39,566 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-11-09 16:20:40,327 WARN L194 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-09 16:20:40,455 WARN L194 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 16:20:40,706 WARN L194 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-09 16:20:40,823 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 16:20:41,294 WARN L194 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-11-09 16:20:41,454 WARN L194 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-09 16:20:41,782 WARN L194 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-11-09 16:20:41,932 WARN L194 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-09 16:20:41,989 INFO L131 LiptonReduction]: Checked pairs total: 1187 [2020-11-09 16:20:41,989 INFO L133 LiptonReduction]: Total number of compositions: 62 [2020-11-09 16:20:41,997 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 42 flow [2020-11-09 16:20:42,012 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-11-09 16:20:42,014 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-11-09 16:20:42,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-09 16:20:42,020 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:42,021 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-09 16:20:42,021 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:42,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:42,027 INFO L82 PathProgramCache]: Analyzing trace with hash -805875314, now seen corresponding path program 1 times [2020-11-09 16:20:42,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:42,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410026654] [2020-11-09 16:20:42,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:42,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:42,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410026654] [2020-11-09 16:20:42,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:20:42,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 16:20:42,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [578226804] [2020-11-09 16:20:42,298 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:42,304 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:42,320 INFO L252 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-11-09 16:20:42,320 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:42,328 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:20:42,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 16:20:42,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:42,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 16:20:42,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 16:20:42,353 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-11-09 16:20:42,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:42,425 INFO L93 Difference]: Finished difference Result 75 states and 190 transitions. [2020-11-09 16:20:42,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 16:20:42,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-09 16:20:42,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:42,439 INFO L225 Difference]: With dead ends: 75 [2020-11-09 16:20:42,439 INFO L226 Difference]: Without dead ends: 42 [2020-11-09 16:20:42,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 16:20:42,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-09 16:20:42,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-11-09 16:20:42,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-09 16:20:42,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 98 transitions. [2020-11-09 16:20:42,484 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 98 transitions. Word has length 6 [2020-11-09 16:20:42,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:42,485 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 98 transitions. [2020-11-09 16:20:42,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 16:20:42,485 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 98 transitions. [2020-11-09 16:20:42,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 16:20:42,486 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:42,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:42,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 16:20:42,487 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:42,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:42,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1351909113, now seen corresponding path program 1 times [2020-11-09 16:20:42,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:42,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207119818] [2020-11-09 16:20:42,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:42,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:42,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207119818] [2020-11-09 16:20:42,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:20:42,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 16:20:42,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [872347306] [2020-11-09 16:20:42,589 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:42,590 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:42,593 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 16 transitions. [2020-11-09 16:20:42,594 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:42,625 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:20:42,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 16:20:42,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:42,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 16:20:42,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 16:20:42,628 INFO L87 Difference]: Start difference. First operand 42 states and 98 transitions. Second operand 5 states. [2020-11-09 16:20:42,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:42,666 INFO L93 Difference]: Finished difference Result 56 states and 130 transitions. [2020-11-09 16:20:42,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 16:20:42,667 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-09 16:20:42,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:42,669 INFO L225 Difference]: With dead ends: 56 [2020-11-09 16:20:42,669 INFO L226 Difference]: Without dead ends: 50 [2020-11-09 16:20:42,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-11-09 16:20:42,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-09 16:20:42,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2020-11-09 16:20:42,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-09 16:20:42,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 100 transitions. [2020-11-09 16:20:42,678 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 100 transitions. Word has length 8 [2020-11-09 16:20:42,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:42,679 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 100 transitions. [2020-11-09 16:20:42,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 16:20:42,679 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 100 transitions. [2020-11-09 16:20:42,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 16:20:42,683 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:42,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:42,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 16:20:42,683 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:42,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:42,684 INFO L82 PathProgramCache]: Analyzing trace with hash 2021583950, now seen corresponding path program 1 times [2020-11-09 16:20:42,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:42,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995415851] [2020-11-09 16:20:42,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:42,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:42,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:42,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995415851] [2020-11-09 16:20:42,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:20:42,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 16:20:42,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1530330647] [2020-11-09 16:20:42,808 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:42,809 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:42,813 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 25 transitions. [2020-11-09 16:20:42,813 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:42,821 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 16:20:42,822 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 16:20:42,841 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 16:20:42,841 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 16:20:42,863 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 16:20:42,864 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 16:20:42,888 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [474#(and (<= ~j~0 6) (<= ~i~0 16))] [2020-11-09 16:20:42,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 16:20:42,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:42,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 16:20:42,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-09 16:20:42,894 INFO L87 Difference]: Start difference. First operand 42 states and 100 transitions. Second operand 7 states. [2020-11-09 16:20:43,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:43,012 INFO L93 Difference]: Finished difference Result 66 states and 152 transitions. [2020-11-09 16:20:43,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-09 16:20:43,013 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-11-09 16:20:43,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:43,014 INFO L225 Difference]: With dead ends: 66 [2020-11-09 16:20:43,014 INFO L226 Difference]: Without dead ends: 50 [2020-11-09 16:20:43,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-09 16:20:43,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-09 16:20:43,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2020-11-09 16:20:43,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-09 16:20:43,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 99 transitions. [2020-11-09 16:20:43,023 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 99 transitions. Word has length 10 [2020-11-09 16:20:43,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:43,023 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 99 transitions. [2020-11-09 16:20:43,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 16:20:43,024 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 99 transitions. [2020-11-09 16:20:43,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 16:20:43,025 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:43,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:43,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 16:20:43,025 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:43,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:43,026 INFO L82 PathProgramCache]: Analyzing trace with hash 2082353870, now seen corresponding path program 2 times [2020-11-09 16:20:43,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:43,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922016834] [2020-11-09 16:20:43,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:43,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:43,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922016834] [2020-11-09 16:20:43,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 16:20:43,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 16:20:43,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1804121368] [2020-11-09 16:20:43,104 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:43,105 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:43,107 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-11-09 16:20:43,107 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:43,128 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 16:20:43,128 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 16:20:43,161 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [639#(and (<= ~i~0 7) (= ULTIMATE.start_main_~condI~0 0))] [2020-11-09 16:20:43,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 16:20:43,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:43,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 16:20:43,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-09 16:20:43,163 INFO L87 Difference]: Start difference. First operand 42 states and 99 transitions. Second operand 7 states. [2020-11-09 16:20:43,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:43,239 INFO L93 Difference]: Finished difference Result 67 states and 157 transitions. [2020-11-09 16:20:43,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 16:20:43,239 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-11-09 16:20:43,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:43,240 INFO L225 Difference]: With dead ends: 67 [2020-11-09 16:20:43,241 INFO L226 Difference]: Without dead ends: 54 [2020-11-09 16:20:43,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-11-09 16:20:43,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-09 16:20:43,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 42. [2020-11-09 16:20:43,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-09 16:20:43,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 102 transitions. [2020-11-09 16:20:43,248 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 102 transitions. Word has length 10 [2020-11-09 16:20:43,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:43,249 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 102 transitions. [2020-11-09 16:20:43,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 16:20:43,249 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 102 transitions. [2020-11-09 16:20:43,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 16:20:43,250 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:43,250 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:43,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 16:20:43,251 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:43,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:43,253 INFO L82 PathProgramCache]: Analyzing trace with hash 735328415, now seen corresponding path program 3 times [2020-11-09 16:20:43,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:43,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481154083] [2020-11-09 16:20:43,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:43,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:43,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481154083] [2020-11-09 16:20:43,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993610280] [2020-11-09 16:20:43,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:43,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-09 16:20:43,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 16:20:43,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-09 16:20:43,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 16:20:43,558 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 16:20:43,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:43,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 16:20:43,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-09 16:20:43,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1226249735] [2020-11-09 16:20:43,589 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:43,591 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:43,597 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-11-09 16:20:43,598 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:43,698 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [835#(and (<= ~i~0 5) (= ULTIMATE.start_main_~condI~0 0))] [2020-11-09 16:20:43,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-09 16:20:43,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:43,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-09 16:20:43,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-11-09 16:20:43,700 INFO L87 Difference]: Start difference. First operand 42 states and 102 transitions. Second operand 8 states. [2020-11-09 16:20:43,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:43,934 INFO L93 Difference]: Finished difference Result 63 states and 147 transitions. [2020-11-09 16:20:43,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-09 16:20:43,936 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-11-09 16:20:43,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:43,937 INFO L225 Difference]: With dead ends: 63 [2020-11-09 16:20:43,937 INFO L226 Difference]: Without dead ends: 54 [2020-11-09 16:20:43,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2020-11-09 16:20:43,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-09 16:20:43,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 37. [2020-11-09 16:20:43,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-09 16:20:43,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 87 transitions. [2020-11-09 16:20:43,947 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 87 transitions. Word has length 11 [2020-11-09 16:20:43,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:43,947 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 87 transitions. [2020-11-09 16:20:43,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-09 16:20:43,947 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 87 transitions. [2020-11-09 16:20:43,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 16:20:43,948 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:43,948 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:44,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:44,150 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:44,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:44,151 INFO L82 PathProgramCache]: Analyzing trace with hash 128488628, now seen corresponding path program 4 times [2020-11-09 16:20:44,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:44,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327104873] [2020-11-09 16:20:44,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:44,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:44,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327104873] [2020-11-09 16:20:44,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380436072] [2020-11-09 16:20:44,231 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:44,302 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 16:20:44,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 16:20:44,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-09 16:20:44,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 16:20:44,340 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 16:20:44,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:44,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 16:20:44,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-09 16:20:44,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2063499422] [2020-11-09 16:20:44,359 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:44,364 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:44,370 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-11-09 16:20:44,370 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:44,421 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:20:44,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 16:20:44,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:44,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 16:20:44,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-09 16:20:44,423 INFO L87 Difference]: Start difference. First operand 37 states and 87 transitions. Second operand 7 states. [2020-11-09 16:20:44,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:44,587 INFO L93 Difference]: Finished difference Result 56 states and 133 transitions. [2020-11-09 16:20:44,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-09 16:20:44,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-11-09 16:20:44,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:44,589 INFO L225 Difference]: With dead ends: 56 [2020-11-09 16:20:44,589 INFO L226 Difference]: Without dead ends: 51 [2020-11-09 16:20:44,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-11-09 16:20:44,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-09 16:20:44,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 43. [2020-11-09 16:20:44,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-09 16:20:44,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 105 transitions. [2020-11-09 16:20:44,595 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 105 transitions. Word has length 11 [2020-11-09 16:20:44,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:44,595 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 105 transitions. [2020-11-09 16:20:44,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 16:20:44,595 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 105 transitions. [2020-11-09 16:20:44,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 16:20:44,596 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:44,596 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:44,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:44,809 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:44,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:44,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1416964401, now seen corresponding path program 5 times [2020-11-09 16:20:44,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:44,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233636304] [2020-11-09 16:20:44,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:44,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:44,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233636304] [2020-11-09 16:20:44,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645833766] [2020-11-09 16:20:44,983 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:45,053 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 16:20:45,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 16:20:45,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 16:20:45,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 16:20:45,064 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 16:20:45,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:45,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 16:20:45,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-11-09 16:20:45,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [182858655] [2020-11-09 16:20:45,097 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:45,099 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:45,102 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 27 transitions. [2020-11-09 16:20:45,102 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:45,105 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 16:20:45,106 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 16:20:45,130 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 16:20:45,130 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 16:20:45,155 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 16:20:45,155 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 16:20:45,170 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1218#(and (<= ~j~0 6) (<= ~i~0 16))] [2020-11-09 16:20:45,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-09 16:20:45,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:45,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-09 16:20:45,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-11-09 16:20:45,171 INFO L87 Difference]: Start difference. First operand 43 states and 105 transitions. Second operand 9 states. [2020-11-09 16:20:45,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:45,397 INFO L93 Difference]: Finished difference Result 56 states and 131 transitions. [2020-11-09 16:20:45,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-09 16:20:45,397 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-11-09 16:20:45,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:45,398 INFO L225 Difference]: With dead ends: 56 [2020-11-09 16:20:45,398 INFO L226 Difference]: Without dead ends: 50 [2020-11-09 16:20:45,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-11-09 16:20:45,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-09 16:20:45,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2020-11-09 16:20:45,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-09 16:20:45,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 113 transitions. [2020-11-09 16:20:45,409 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 113 transitions. Word has length 12 [2020-11-09 16:20:45,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:45,410 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 113 transitions. [2020-11-09 16:20:45,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-09 16:20:45,411 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 113 transitions. [2020-11-09 16:20:45,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 16:20:45,413 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:45,413 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:45,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:45,625 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:45,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:45,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1320372483, now seen corresponding path program 6 times [2020-11-09 16:20:45,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:45,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547735682] [2020-11-09 16:20:45,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:45,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:45,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547735682] [2020-11-09 16:20:45,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640860879] [2020-11-09 16:20:45,741 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:45,817 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-11-09 16:20:45,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 16:20:45,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-09 16:20:45,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 16:20:45,845 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 16:20:45,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:45,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 16:20:45,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-09 16:20:45,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1937304973] [2020-11-09 16:20:45,858 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:45,860 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:45,862 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-11-09 16:20:45,863 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:45,871 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:20:45,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-09 16:20:45,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:45,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-09 16:20:45,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-09 16:20:45,872 INFO L87 Difference]: Start difference. First operand 47 states and 113 transitions. Second operand 8 states. [2020-11-09 16:20:46,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:46,075 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2020-11-09 16:20:46,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-09 16:20:46,076 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-11-09 16:20:46,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:46,077 INFO L225 Difference]: With dead ends: 64 [2020-11-09 16:20:46,077 INFO L226 Difference]: Without dead ends: 59 [2020-11-09 16:20:46,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-11-09 16:20:46,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-09 16:20:46,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 42. [2020-11-09 16:20:46,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-09 16:20:46,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 99 transitions. [2020-11-09 16:20:46,087 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 99 transitions. Word has length 12 [2020-11-09 16:20:46,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:46,088 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 99 transitions. [2020-11-09 16:20:46,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-09 16:20:46,092 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 99 transitions. [2020-11-09 16:20:46,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 16:20:46,093 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:46,093 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:46,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:46,306 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:46,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:46,307 INFO L82 PathProgramCache]: Analyzing trace with hash -311794613, now seen corresponding path program 7 times [2020-11-09 16:20:46,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:46,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510084721] [2020-11-09 16:20:46,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:46,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:46,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510084721] [2020-11-09 16:20:46,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683943689] [2020-11-09 16:20:46,416 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:46,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-09 16:20:46,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 16:20:46,534 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 16:20:46,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:46,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 16:20:46,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-09 16:20:46,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [599721429] [2020-11-09 16:20:46,563 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:46,564 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:46,569 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-11-09 16:20:46,569 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:46,605 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1631#(and (<= ~i~0 9) (= ULTIMATE.start_main_~condI~0 0))] [2020-11-09 16:20:46,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-09 16:20:46,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:46,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-09 16:20:46,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-09 16:20:46,607 INFO L87 Difference]: Start difference. First operand 42 states and 99 transitions. Second operand 9 states. [2020-11-09 16:20:46,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:46,858 INFO L93 Difference]: Finished difference Result 72 states and 169 transitions. [2020-11-09 16:20:46,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-09 16:20:46,859 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-11-09 16:20:46,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:46,860 INFO L225 Difference]: With dead ends: 72 [2020-11-09 16:20:46,860 INFO L226 Difference]: Without dead ends: 63 [2020-11-09 16:20:46,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-11-09 16:20:46,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-09 16:20:46,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 48. [2020-11-09 16:20:46,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-09 16:20:46,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 117 transitions. [2020-11-09 16:20:46,865 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 117 transitions. Word has length 12 [2020-11-09 16:20:46,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:46,865 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 117 transitions. [2020-11-09 16:20:46,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-09 16:20:46,866 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 117 transitions. [2020-11-09 16:20:46,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 16:20:46,866 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:46,867 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:47,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:47,077 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:47,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:47,078 INFO L82 PathProgramCache]: Analyzing trace with hash -2018100772, now seen corresponding path program 8 times [2020-11-09 16:20:47,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:47,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024717710] [2020-11-09 16:20:47,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:47,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:47,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024717710] [2020-11-09 16:20:47,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613528315] [2020-11-09 16:20:47,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:47,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 16:20:47,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 16:20:47,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 16:20:47,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 16:20:47,295 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 16:20:47,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:47,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 16:20:47,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-11-09 16:20:47,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [974095986] [2020-11-09 16:20:47,311 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:47,316 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:47,319 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-11-09 16:20:47,320 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:47,349 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1860#(and (<= ~i~0 7) (= ULTIMATE.start_main_~condI~0 0))] [2020-11-09 16:20:47,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-09 16:20:47,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:47,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-09 16:20:47,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-09 16:20:47,351 INFO L87 Difference]: Start difference. First operand 48 states and 117 transitions. Second operand 10 states. [2020-11-09 16:20:47,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:47,662 INFO L93 Difference]: Finished difference Result 72 states and 169 transitions. [2020-11-09 16:20:47,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-09 16:20:47,663 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-11-09 16:20:47,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:47,664 INFO L225 Difference]: With dead ends: 72 [2020-11-09 16:20:47,664 INFO L226 Difference]: Without dead ends: 63 [2020-11-09 16:20:47,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2020-11-09 16:20:47,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-09 16:20:47,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 41. [2020-11-09 16:20:47,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-09 16:20:47,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 97 transitions. [2020-11-09 16:20:47,672 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 97 transitions. Word has length 13 [2020-11-09 16:20:47,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:47,672 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 97 transitions. [2020-11-09 16:20:47,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-09 16:20:47,672 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 97 transitions. [2020-11-09 16:20:47,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 16:20:47,673 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:47,674 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:47,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:47,885 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:47,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:47,886 INFO L82 PathProgramCache]: Analyzing trace with hash -1075670313, now seen corresponding path program 9 times [2020-11-09 16:20:47,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:47,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617301562] [2020-11-09 16:20:47,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:47,963 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:47,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617301562] [2020-11-09 16:20:47,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001219420] [2020-11-09 16:20:47,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:48,036 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-09 16:20:48,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 16:20:48,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 16:20:48,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 16:20:48,062 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 16:20:48,074 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:48,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 16:20:48,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-11-09 16:20:48,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [120603086] [2020-11-09 16:20:48,075 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:48,077 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:48,080 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-11-09 16:20:48,080 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:48,096 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:20:48,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-09 16:20:48,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:48,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-09 16:20:48,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-09 16:20:48,098 INFO L87 Difference]: Start difference. First operand 41 states and 97 transitions. Second operand 9 states. [2020-11-09 16:20:48,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:48,355 INFO L93 Difference]: Finished difference Result 64 states and 153 transitions. [2020-11-09 16:20:48,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-09 16:20:48,355 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-11-09 16:20:48,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:48,356 INFO L225 Difference]: With dead ends: 64 [2020-11-09 16:20:48,356 INFO L226 Difference]: Without dead ends: 59 [2020-11-09 16:20:48,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342 [2020-11-09 16:20:48,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-09 16:20:48,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49. [2020-11-09 16:20:48,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-09 16:20:48,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 121 transitions. [2020-11-09 16:20:48,364 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 121 transitions. Word has length 13 [2020-11-09 16:20:48,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:48,367 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 121 transitions. [2020-11-09 16:20:48,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-09 16:20:48,367 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 121 transitions. [2020-11-09 16:20:48,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 16:20:48,371 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:48,372 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:48,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:48,584 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:48,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:48,585 INFO L82 PathProgramCache]: Analyzing trace with hash 198162772, now seen corresponding path program 10 times [2020-11-09 16:20:48,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:48,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520871843] [2020-11-09 16:20:48,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:48,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:48,712 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:48,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520871843] [2020-11-09 16:20:48,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362710811] [2020-11-09 16:20:48,712 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:48,787 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 16:20:48,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 16:20:48,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-09 16:20:48,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 16:20:48,792 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 16:20:48,804 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:48,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 16:20:48,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-11-09 16:20:48,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1797853153] [2020-11-09 16:20:48,805 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:48,807 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:48,810 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-11-09 16:20:48,811 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:48,820 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 16:20:48,820 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 16:20:48,846 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 16:20:48,846 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 16:20:48,866 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 16:20:48,866 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 16:20:48,883 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2312#(and (<= ~j~0 6) (<= ~i~0 16))] [2020-11-09 16:20:48,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-09 16:20:48,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:48,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-09 16:20:48,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-09 16:20:48,884 INFO L87 Difference]: Start difference. First operand 49 states and 121 transitions. Second operand 11 states. [2020-11-09 16:20:49,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:49,102 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2020-11-09 16:20:49,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-09 16:20:49,103 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-11-09 16:20:49,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:49,104 INFO L225 Difference]: With dead ends: 64 [2020-11-09 16:20:49,104 INFO L226 Difference]: Without dead ends: 58 [2020-11-09 16:20:49,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-11-09 16:20:49,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-09 16:20:49,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2020-11-09 16:20:49,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-09 16:20:49,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 129 transitions. [2020-11-09 16:20:49,109 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 129 transitions. Word has length 14 [2020-11-09 16:20:49,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:49,109 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 129 transitions. [2020-11-09 16:20:49,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-09 16:20:49,109 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 129 transitions. [2020-11-09 16:20:49,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 16:20:49,110 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:49,110 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:49,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-09 16:20:49,322 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:49,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:49,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1863413606, now seen corresponding path program 11 times [2020-11-09 16:20:49,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:49,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744149934] [2020-11-09 16:20:49,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:49,424 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:49,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744149934] [2020-11-09 16:20:49,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660405128] [2020-11-09 16:20:49,426 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:49,510 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-11-09 16:20:49,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 16:20:49,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-09 16:20:49,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 16:20:49,537 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 16:20:49,552 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:49,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 16:20:49,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-09 16:20:49,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1537726815] [2020-11-09 16:20:49,553 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:49,555 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:49,558 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-11-09 16:20:49,558 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:49,566 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:20:49,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-09 16:20:49,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:49,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-09 16:20:49,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-09 16:20:49,568 INFO L87 Difference]: Start difference. First operand 53 states and 129 transitions. Second operand 10 states. [2020-11-09 16:20:49,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:49,956 INFO L93 Difference]: Finished difference Result 74 states and 175 transitions. [2020-11-09 16:20:49,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-09 16:20:49,960 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-09 16:20:49,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:49,961 INFO L225 Difference]: With dead ends: 74 [2020-11-09 16:20:49,961 INFO L226 Difference]: Without dead ends: 69 [2020-11-09 16:20:49,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=180, Invalid=372, Unknown=0, NotChecked=0, Total=552 [2020-11-09 16:20:49,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-09 16:20:49,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 46. [2020-11-09 16:20:49,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-09 16:20:49,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 109 transitions. [2020-11-09 16:20:49,966 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 109 transitions. Word has length 14 [2020-11-09 16:20:49,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:49,966 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 109 transitions. [2020-11-09 16:20:49,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-09 16:20:49,967 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 109 transitions. [2020-11-09 16:20:49,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 16:20:49,967 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:49,967 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:50,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:50,179 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:50,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:50,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1013983880, now seen corresponding path program 12 times [2020-11-09 16:20:50,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:50,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351912717] [2020-11-09 16:20:50,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:50,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:50,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351912717] [2020-11-09 16:20:50,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029641476] [2020-11-09 16:20:50,286 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:50,359 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-11-09 16:20:50,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 16:20:50,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-09 16:20:50,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 16:20:50,396 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:50,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 16:20:50,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-09 16:20:50,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1470816421] [2020-11-09 16:20:50,397 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:50,398 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:50,401 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-11-09 16:20:50,402 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:50,448 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2791#(and (= ULTIMATE.start_main_~condI~0 0) (<= ~i~0 11))] [2020-11-09 16:20:50,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-09 16:20:50,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:50,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-09 16:20:50,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-11-09 16:20:50,449 INFO L87 Difference]: Start difference. First operand 46 states and 109 transitions. Second operand 11 states. [2020-11-09 16:20:50,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:50,859 INFO L93 Difference]: Finished difference Result 82 states and 193 transitions. [2020-11-09 16:20:50,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-09 16:20:50,859 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-11-09 16:20:50,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:50,860 INFO L225 Difference]: With dead ends: 82 [2020-11-09 16:20:50,860 INFO L226 Difference]: Without dead ends: 73 [2020-11-09 16:20:50,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2020-11-09 16:20:50,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-09 16:20:50,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 54. [2020-11-09 16:20:50,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-09 16:20:50,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 133 transitions. [2020-11-09 16:20:50,866 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 133 transitions. Word has length 14 [2020-11-09 16:20:50,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:50,866 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 133 transitions. [2020-11-09 16:20:50,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-09 16:20:50,866 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 133 transitions. [2020-11-09 16:20:50,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 16:20:50,867 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:50,867 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:51,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:51,079 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:51,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:51,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1931272153, now seen corresponding path program 13 times [2020-11-09 16:20:51,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:51,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523933624] [2020-11-09 16:20:51,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:51,204 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:51,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523933624] [2020-11-09 16:20:51,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057428865] [2020-11-09 16:20:51,205 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:51,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:51,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-09 16:20:51,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 16:20:51,308 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 16:20:51,321 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:51,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 16:20:51,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-11-09 16:20:51,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1692567288] [2020-11-09 16:20:51,322 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:51,323 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:51,328 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 25 transitions. [2020-11-09 16:20:51,328 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:51,359 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3058#(and (<= ~i~0 9) (= ULTIMATE.start_main_~condI~0 0))] [2020-11-09 16:20:51,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-09 16:20:51,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:51,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-09 16:20:51,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-11-09 16:20:51,360 INFO L87 Difference]: Start difference. First operand 54 states and 133 transitions. Second operand 12 states. [2020-11-09 16:20:51,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:51,794 INFO L93 Difference]: Finished difference Result 82 states and 193 transitions. [2020-11-09 16:20:51,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-09 16:20:51,794 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-11-09 16:20:51,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:51,795 INFO L225 Difference]: With dead ends: 82 [2020-11-09 16:20:51,795 INFO L226 Difference]: Without dead ends: 73 [2020-11-09 16:20:51,796 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2020-11-09 16:20:51,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-09 16:20:51,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 45. [2020-11-09 16:20:51,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-09 16:20:51,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 107 transitions. [2020-11-09 16:20:51,806 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 107 transitions. Word has length 15 [2020-11-09 16:20:51,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:51,806 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 107 transitions. [2020-11-09 16:20:51,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-09 16:20:51,807 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 107 transitions. [2020-11-09 16:20:51,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 16:20:51,807 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:51,807 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:52,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-09 16:20:52,008 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:52,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:52,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1368757306, now seen corresponding path program 14 times [2020-11-09 16:20:52,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:52,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659120826] [2020-11-09 16:20:52,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:52,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:52,130 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:52,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659120826] [2020-11-09 16:20:52,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719749347] [2020-11-09 16:20:52,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:52,206 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 16:20:52,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 16:20:52,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-09 16:20:52,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 16:20:52,253 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 16:20:52,267 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:52,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 16:20:52,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-11-09 16:20:52,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1327157240] [2020-11-09 16:20:52,268 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:52,270 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:52,273 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 27 transitions. [2020-11-09 16:20:52,274 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:52,291 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:20:52,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-09 16:20:52,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:52,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-09 16:20:52,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-11-09 16:20:52,292 INFO L87 Difference]: Start difference. First operand 45 states and 107 transitions. Second operand 11 states. [2020-11-09 16:20:52,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:52,670 INFO L93 Difference]: Finished difference Result 72 states and 173 transitions. [2020-11-09 16:20:52,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-09 16:20:52,672 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-11-09 16:20:52,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:52,672 INFO L225 Difference]: With dead ends: 72 [2020-11-09 16:20:52,673 INFO L226 Difference]: Without dead ends: 67 [2020-11-09 16:20:52,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=408, Unknown=0, NotChecked=0, Total=600 [2020-11-09 16:20:52,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-09 16:20:52,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2020-11-09 16:20:52,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-09 16:20:52,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 137 transitions. [2020-11-09 16:20:52,680 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 137 transitions. Word has length 15 [2020-11-09 16:20:52,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:52,683 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 137 transitions. [2020-11-09 16:20:52,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-09 16:20:52,683 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 137 transitions. [2020-11-09 16:20:52,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 16:20:52,684 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:52,684 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:52,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-09 16:20:52,885 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:52,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:52,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1455869111, now seen corresponding path program 15 times [2020-11-09 16:20:52,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:52,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895740599] [2020-11-09 16:20:52,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:52,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:53,079 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:53,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895740599] [2020-11-09 16:20:53,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937777347] [2020-11-09 16:20:53,080 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:53,146 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-09 16:20:53,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 16:20:53,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-09 16:20:53,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 16:20:53,151 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 16:20:53,174 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:53,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 16:20:53,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-11-09 16:20:53,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1320448979] [2020-11-09 16:20:53,175 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:53,177 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:53,180 INFO L252 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-11-09 16:20:53,181 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:53,189 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 16:20:53,189 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 16:20:53,213 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 16:20:53,213 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 16:20:53,231 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 16:20:53,231 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 16:20:53,245 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3580#(and (<= ~j~0 6) (<= ~i~0 16))] [2020-11-09 16:20:53,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 16:20:53,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:53,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 16:20:53,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-11-09 16:20:53,247 INFO L87 Difference]: Start difference. First operand 55 states and 137 transitions. Second operand 13 states. [2020-11-09 16:20:53,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:53,541 INFO L93 Difference]: Finished difference Result 72 states and 171 transitions. [2020-11-09 16:20:53,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-09 16:20:53,542 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-11-09 16:20:53,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:53,548 INFO L225 Difference]: With dead ends: 72 [2020-11-09 16:20:53,548 INFO L226 Difference]: Without dead ends: 66 [2020-11-09 16:20:53,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2020-11-09 16:20:53,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-09 16:20:53,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 59. [2020-11-09 16:20:53,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-09 16:20:53,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 145 transitions. [2020-11-09 16:20:53,556 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 145 transitions. Word has length 16 [2020-11-09 16:20:53,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:53,556 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 145 transitions. [2020-11-09 16:20:53,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 16:20:53,556 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 145 transitions. [2020-11-09 16:20:53,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 16:20:53,557 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:53,557 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:53,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-09 16:20:53,758 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:53,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:53,759 INFO L82 PathProgramCache]: Analyzing trace with hash -260077303, now seen corresponding path program 16 times [2020-11-09 16:20:53,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:53,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960616820] [2020-11-09 16:20:53,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:53,871 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:53,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960616820] [2020-11-09 16:20:53,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059707360] [2020-11-09 16:20:53,874 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:53,941 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 16:20:53,942 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 16:20:53,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-09 16:20:53,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 16:20:53,974 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 16:20:53,995 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:53,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 16:20:53,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-11-09 16:20:53,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1667487263] [2020-11-09 16:20:53,996 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:53,998 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:54,000 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 24 transitions. [2020-11-09 16:20:54,001 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:54,008 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:20:54,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-09 16:20:54,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:54,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-09 16:20:54,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-11-09 16:20:54,010 INFO L87 Difference]: Start difference. First operand 59 states and 145 transitions. Second operand 12 states. [2020-11-09 16:20:54,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:54,488 INFO L93 Difference]: Finished difference Result 84 states and 199 transitions. [2020-11-09 16:20:54,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-09 16:20:54,488 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2020-11-09 16:20:54,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:54,489 INFO L225 Difference]: With dead ends: 84 [2020-11-09 16:20:54,489 INFO L226 Difference]: Without dead ends: 79 [2020-11-09 16:20:54,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=281, Invalid=589, Unknown=0, NotChecked=0, Total=870 [2020-11-09 16:20:54,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-09 16:20:54,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 50. [2020-11-09 16:20:54,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-09 16:20:54,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 119 transitions. [2020-11-09 16:20:54,494 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 119 transitions. Word has length 16 [2020-11-09 16:20:54,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:54,494 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 119 transitions. [2020-11-09 16:20:54,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-09 16:20:54,494 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 119 transitions. [2020-11-09 16:20:54,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 16:20:54,495 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:54,495 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:54,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:54,706 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:54,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:54,708 INFO L82 PathProgramCache]: Analyzing trace with hash -518171259, now seen corresponding path program 17 times [2020-11-09 16:20:54,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:54,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456635703] [2020-11-09 16:20:54,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:54,810 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:54,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456635703] [2020-11-09 16:20:54,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129731078] [2020-11-09 16:20:54,811 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:54,882 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-11-09 16:20:54,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 16:20:54,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-09 16:20:54,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 16:20:54,919 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 16:20:54,932 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:54,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 16:20:54,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-11-09 16:20:54,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2042458698] [2020-11-09 16:20:54,933 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:54,935 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:54,938 INFO L252 McrAutomatonBuilder]: Finished intersection with 24 states and 30 transitions. [2020-11-09 16:20:54,938 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:54,991 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4125#(and (<= ~i~0 13) (= ULTIMATE.start_main_~condI~0 0))] [2020-11-09 16:20:54,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 16:20:54,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:54,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 16:20:54,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-11-09 16:20:54,992 INFO L87 Difference]: Start difference. First operand 50 states and 119 transitions. Second operand 13 states. [2020-11-09 16:20:55,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:55,460 INFO L93 Difference]: Finished difference Result 92 states and 217 transitions. [2020-11-09 16:20:55,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-09 16:20:55,460 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-11-09 16:20:55,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:55,462 INFO L225 Difference]: With dead ends: 92 [2020-11-09 16:20:55,462 INFO L226 Difference]: Without dead ends: 83 [2020-11-09 16:20:55,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=250, Invalid=562, Unknown=0, NotChecked=0, Total=812 [2020-11-09 16:20:55,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-09 16:20:55,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 60. [2020-11-09 16:20:55,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-09 16:20:55,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 149 transitions. [2020-11-09 16:20:55,466 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 149 transitions. Word has length 16 [2020-11-09 16:20:55,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:55,467 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 149 transitions. [2020-11-09 16:20:55,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 16:20:55,467 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 149 transitions. [2020-11-09 16:20:55,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 16:20:55,467 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:55,468 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:55,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:55,680 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:55,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:55,680 INFO L82 PathProgramCache]: Analyzing trace with hash 527563414, now seen corresponding path program 18 times [2020-11-09 16:20:55,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:55,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137568605] [2020-11-09 16:20:55,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:55,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:55,807 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:55,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137568605] [2020-11-09 16:20:55,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351421553] [2020-11-09 16:20:55,808 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:55,890 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-11-09 16:20:55,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 16:20:55,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-09 16:20:55,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 16:20:55,920 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 16:20:55,935 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:55,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 16:20:55,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-11-09 16:20:55,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [721834927] [2020-11-09 16:20:55,936 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:55,938 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:55,941 INFO L252 McrAutomatonBuilder]: Finished intersection with 23 states and 27 transitions. [2020-11-09 16:20:55,941 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:55,969 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4430#(and (= ULTIMATE.start_main_~condI~0 0) (<= ~i~0 11))] [2020-11-09 16:20:55,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-09 16:20:55,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:55,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-09 16:20:55,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-11-09 16:20:55,970 INFO L87 Difference]: Start difference. First operand 60 states and 149 transitions. Second operand 14 states. [2020-11-09 16:20:56,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:56,541 INFO L93 Difference]: Finished difference Result 92 states and 217 transitions. [2020-11-09 16:20:56,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-09 16:20:56,542 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-11-09 16:20:56,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:56,543 INFO L225 Difference]: With dead ends: 92 [2020-11-09 16:20:56,543 INFO L226 Difference]: Without dead ends: 83 [2020-11-09 16:20:56,544 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=352, Invalid=770, Unknown=0, NotChecked=0, Total=1122 [2020-11-09 16:20:56,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-09 16:20:56,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 49. [2020-11-09 16:20:56,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-09 16:20:56,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 117 transitions. [2020-11-09 16:20:56,549 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 117 transitions. Word has length 17 [2020-11-09 16:20:56,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:56,549 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 117 transitions. [2020-11-09 16:20:56,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-09 16:20:56,549 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 117 transitions. [2020-11-09 16:20:56,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 16:20:56,549 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:56,550 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:56,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:56,754 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:56,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:56,754 INFO L82 PathProgramCache]: Analyzing trace with hash 1116588253, now seen corresponding path program 19 times [2020-11-09 16:20:56,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:56,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234856799] [2020-11-09 16:20:56,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:56,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:56,878 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:56,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234856799] [2020-11-09 16:20:56,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230306216] [2020-11-09 16:20:56,878 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:56,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-09 16:20:56,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 16:20:56,978 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 16:20:56,999 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:57,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 16:20:57,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-11-09 16:20:57,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2020574160] [2020-11-09 16:20:57,000 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:57,002 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:57,005 INFO L252 McrAutomatonBuilder]: Finished intersection with 24 states and 29 transitions. [2020-11-09 16:20:57,005 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:57,022 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:20:57,022 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 16:20:57,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:57,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 16:20:57,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-11-09 16:20:57,024 INFO L87 Difference]: Start difference. First operand 49 states and 117 transitions. Second operand 13 states. [2020-11-09 16:20:57,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:57,528 INFO L93 Difference]: Finished difference Result 80 states and 193 transitions. [2020-11-09 16:20:57,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-09 16:20:57,529 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 17 [2020-11-09 16:20:57,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:57,529 INFO L225 Difference]: With dead ends: 80 [2020-11-09 16:20:57,529 INFO L226 Difference]: Without dead ends: 75 [2020-11-09 16:20:57,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=294, Invalid=636, Unknown=0, NotChecked=0, Total=930 [2020-11-09 16:20:57,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-09 16:20:57,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2020-11-09 16:20:57,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-09 16:20:57,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 153 transitions. [2020-11-09 16:20:57,534 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 153 transitions. Word has length 17 [2020-11-09 16:20:57,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:57,534 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 153 transitions. [2020-11-09 16:20:57,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 16:20:57,535 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 153 transitions. [2020-11-09 16:20:57,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 16:20:57,535 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:57,535 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:57,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-11-09 16:20:57,746 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:57,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:57,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1069116582, now seen corresponding path program 20 times [2020-11-09 16:20:57,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:57,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302863170] [2020-11-09 16:20:57,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:57,924 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:57,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302863170] [2020-11-09 16:20:57,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675863328] [2020-11-09 16:20:57,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:57,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 16:20:57,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 16:20:57,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-09 16:20:57,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 16:20:58,000 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 16:20:58,012 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:58,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 16:20:58,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-11-09 16:20:58,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [179170541] [2020-11-09 16:20:58,013 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:58,016 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:58,020 INFO L252 McrAutomatonBuilder]: Finished intersection with 26 states and 33 transitions. [2020-11-09 16:20:58,020 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:58,034 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 16:20:58,034 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 16:20:58,058 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 16:20:58,058 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 16:20:58,077 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 16:20:58,077 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 16:20:58,091 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5022#(and (<= ~j~0 6) (<= ~i~0 16))] [2020-11-09 16:20:58,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-09 16:20:58,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:58,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-09 16:20:58,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-11-09 16:20:58,093 INFO L87 Difference]: Start difference. First operand 61 states and 153 transitions. Second operand 15 states. [2020-11-09 16:20:58,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:58,460 INFO L93 Difference]: Finished difference Result 80 states and 191 transitions. [2020-11-09 16:20:58,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-09 16:20:58,460 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-11-09 16:20:58,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:58,462 INFO L225 Difference]: With dead ends: 80 [2020-11-09 16:20:58,462 INFO L226 Difference]: Without dead ends: 74 [2020-11-09 16:20:58,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=220, Invalid=482, Unknown=0, NotChecked=0, Total=702 [2020-11-09 16:20:58,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-09 16:20:58,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 65. [2020-11-09 16:20:58,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-09 16:20:58,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 161 transitions. [2020-11-09 16:20:58,466 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 161 transitions. Word has length 18 [2020-11-09 16:20:58,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:58,466 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 161 transitions. [2020-11-09 16:20:58,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-09 16:20:58,467 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 161 transitions. [2020-11-09 16:20:58,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 16:20:58,467 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:58,467 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:58,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-09 16:20:58,678 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:58,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:58,678 INFO L82 PathProgramCache]: Analyzing trace with hash -825375252, now seen corresponding path program 21 times [2020-11-09 16:20:58,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:58,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268839618] [2020-11-09 16:20:58,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:58,806 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:58,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268839618] [2020-11-09 16:20:58,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036370871] [2020-11-09 16:20:58,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:58,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-09 16:20:58,876 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 16:20:58,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-09 16:20:58,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 16:20:58,901 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 16:20:58,926 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:58,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 16:20:58,927 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-11-09 16:20:58,927 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1357253257] [2020-11-09 16:20:58,927 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:20:58,928 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:20:58,931 INFO L252 McrAutomatonBuilder]: Finished intersection with 23 states and 26 transitions. [2020-11-09 16:20:58,931 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:20:58,939 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:20:58,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-09 16:20:58,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:20:58,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-09 16:20:58,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-11-09 16:20:58,940 INFO L87 Difference]: Start difference. First operand 65 states and 161 transitions. Second operand 14 states. [2020-11-09 16:20:59,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:20:59,556 INFO L93 Difference]: Finished difference Result 94 states and 223 transitions. [2020-11-09 16:20:59,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-09 16:20:59,557 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 18 [2020-11-09 16:20:59,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:20:59,558 INFO L225 Difference]: With dead ends: 94 [2020-11-09 16:20:59,558 INFO L226 Difference]: Without dead ends: 89 [2020-11-09 16:20:59,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=404, Invalid=856, Unknown=0, NotChecked=0, Total=1260 [2020-11-09 16:20:59,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-11-09 16:20:59,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 54. [2020-11-09 16:20:59,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-09 16:20:59,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 129 transitions. [2020-11-09 16:20:59,563 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 129 transitions. Word has length 18 [2020-11-09 16:20:59,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:20:59,563 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 129 transitions. [2020-11-09 16:20:59,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-09 16:20:59,564 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 129 transitions. [2020-11-09 16:20:59,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 16:20:59,564 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:20:59,564 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:20:59,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-09 16:20:59,774 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:20:59,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:20:59,774 INFO L82 PathProgramCache]: Analyzing trace with hash 254522690, now seen corresponding path program 22 times [2020-11-09 16:20:59,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:20:59,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733604920] [2020-11-09 16:20:59,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:20:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:20:59,909 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:20:59,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733604920] [2020-11-09 16:20:59,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156769211] [2020-11-09 16:20:59,910 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:20:59,986 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 16:20:59,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 16:20:59,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-09 16:20:59,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 16:21:00,031 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 16:21:00,047 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:21:00,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 16:21:00,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-11-09 16:21:00,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [788446524] [2020-11-09 16:21:00,049 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:21:00,051 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:21:00,055 INFO L252 McrAutomatonBuilder]: Finished intersection with 26 states and 32 transitions. [2020-11-09 16:21:00,055 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:21:00,097 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5633#(and (= ULTIMATE.start_main_~condI~0 0) (<= ~i~0 15))] [2020-11-09 16:21:00,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-09 16:21:00,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:21:00,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-09 16:21:00,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-11-09 16:21:00,098 INFO L87 Difference]: Start difference. First operand 54 states and 129 transitions. Second operand 15 states. [2020-11-09 16:21:00,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:21:00,739 INFO L93 Difference]: Finished difference Result 102 states and 241 transitions. [2020-11-09 16:21:00,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-09 16:21:00,739 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-11-09 16:21:00,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:21:00,741 INFO L225 Difference]: With dead ends: 102 [2020-11-09 16:21:00,741 INFO L226 Difference]: Without dead ends: 93 [2020-11-09 16:21:00,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=365, Invalid=825, Unknown=0, NotChecked=0, Total=1190 [2020-11-09 16:21:00,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-09 16:21:00,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 66. [2020-11-09 16:21:00,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-09 16:21:00,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 165 transitions. [2020-11-09 16:21:00,745 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 165 transitions. Word has length 18 [2020-11-09 16:21:00,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:21:00,745 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 165 transitions. [2020-11-09 16:21:00,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-09 16:21:00,746 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 165 transitions. [2020-11-09 16:21:00,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-09 16:21:00,746 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:21:00,746 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:21:00,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-11-09 16:21:00,956 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:21:00,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:21:00,956 INFO L82 PathProgramCache]: Analyzing trace with hash 183196179, now seen corresponding path program 23 times [2020-11-09 16:21:00,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:21:00,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038416649] [2020-11-09 16:21:00,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:21:00,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:21:01,037 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:21:01,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038416649] [2020-11-09 16:21:01,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [106683673] [2020-11-09 16:21:01,038 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:21:01,117 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-09 16:21:01,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 16:21:01,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-09 16:21:01,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 16:21:01,134 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:21:01,134 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-09 16:21:01,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2020-11-09 16:21:01,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1717717165] [2020-11-09 16:21:01,134 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:21:01,136 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:21:01,140 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 29 transitions. [2020-11-09 16:21:01,140 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:21:01,152 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:21:01,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-09 16:21:01,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:21:01,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-09 16:21:01,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-11-09 16:21:01,153 INFO L87 Difference]: Start difference. First operand 66 states and 165 transitions. Second operand 8 states. [2020-11-09 16:21:01,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:21:01,177 INFO L93 Difference]: Finished difference Result 149 states and 333 transitions. [2020-11-09 16:21:01,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-09 16:21:01,177 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-11-09 16:21:01,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:21:01,178 INFO L225 Difference]: With dead ends: 149 [2020-11-09 16:21:01,178 INFO L226 Difference]: Without dead ends: 36 [2020-11-09 16:21:01,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-11-09 16:21:01,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-09 16:21:01,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-09 16:21:01,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-09 16:21:01,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 65 transitions. [2020-11-09 16:21:01,180 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 65 transitions. Word has length 19 [2020-11-09 16:21:01,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:21:01,180 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 65 transitions. [2020-11-09 16:21:01,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-09 16:21:01,180 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 65 transitions. [2020-11-09 16:21:01,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-09 16:21:01,181 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 16:21:01,181 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 16:21:01,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-11-09 16:21:01,382 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 16:21:01,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 16:21:01,382 INFO L82 PathProgramCache]: Analyzing trace with hash -699703104, now seen corresponding path program 24 times [2020-11-09 16:21:01,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 16:21:01,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945288150] [2020-11-09 16:21:01,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 16:21:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 16:21:01,450 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:21:01,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945288150] [2020-11-09 16:21:01,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096875086] [2020-11-09 16:21:01,451 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:21:01,531 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-11-09 16:21:01,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 16:21:01,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-09 16:21:01,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 16:21:01,568 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 16:21:01,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-09 16:21:01,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2020-11-09 16:21:01,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1585870532] [2020-11-09 16:21:01,569 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 16:21:01,571 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 16:21:01,575 INFO L252 McrAutomatonBuilder]: Finished intersection with 26 states and 31 transitions. [2020-11-09 16:21:01,575 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 16:21:01,602 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 16:21:01,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-09 16:21:01,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 16:21:01,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-09 16:21:01,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-11-09 16:21:01,604 INFO L87 Difference]: Start difference. First operand 36 states and 65 transitions. Second operand 8 states. [2020-11-09 16:21:01,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 16:21:01,617 INFO L93 Difference]: Finished difference Result 56 states and 79 transitions. [2020-11-09 16:21:01,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-09 16:21:01,617 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-11-09 16:21:01,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 16:21:01,618 INFO L225 Difference]: With dead ends: 56 [2020-11-09 16:21:01,618 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 16:21:01,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-11-09 16:21:01,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 16:21:01,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 16:21:01,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 16:21:01,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 16:21:01,619 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-09 16:21:01,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 16:21:01,619 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 16:21:01,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-09 16:21:01,619 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 16:21:01,619 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 16:21:01,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 16:21:01,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 04:21:01 BasicIcfg [2020-11-09 16:21:01,826 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 16:21:01,828 INFO L168 Benchmark]: Toolchain (without parser) took 25559.37 ms. Allocated memory was 166.7 MB in the beginning and 241.2 MB in the end (delta: 74.4 MB). Free memory was 140.3 MB in the beginning and 82.4 MB in the end (delta: 57.8 MB). Peak memory consumption was 132.7 MB. Max. memory is 8.0 GB. [2020-11-09 16:21:01,828 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 125.8 MB. Free memory was 99.5 MB in the beginning and 99.3 MB in the end (delta: 122.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 16:21:01,829 INFO L168 Benchmark]: CACSL2BoogieTranslator took 833.32 ms. Allocated memory is still 166.7 MB. Free memory was 139.7 MB in the beginning and 143.3 MB in the end (delta: -3.6 MB). Peak memory consumption was 27.9 MB. Max. memory is 8.0 GB. [2020-11-09 16:21:01,830 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.61 ms. Allocated memory is still 166.7 MB. Free memory was 143.3 MB in the beginning and 141.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 16:21:01,831 INFO L168 Benchmark]: Boogie Preprocessor took 33.75 ms. Allocated memory is still 166.7 MB. Free memory was 141.7 MB in the beginning and 140.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 16:21:01,832 INFO L168 Benchmark]: RCFGBuilder took 449.03 ms. Allocated memory is still 166.7 MB. Free memory was 140.2 MB in the beginning and 120.3 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-11-09 16:21:01,832 INFO L168 Benchmark]: TraceAbstraction took 24179.17 ms. Allocated memory was 166.7 MB in the beginning and 241.2 MB in the end (delta: 74.4 MB). Free memory was 120.2 MB in the beginning and 82.4 MB in the end (delta: 37.8 MB). Peak memory consumption was 112.2 MB. Max. memory is 8.0 GB. [2020-11-09 16:21:01,836 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 125.8 MB. Free memory was 99.5 MB in the beginning and 99.3 MB in the end (delta: 122.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 833.32 ms. Allocated memory is still 166.7 MB. Free memory was 139.7 MB in the beginning and 143.3 MB in the end (delta: -3.6 MB). Peak memory consumption was 27.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 47.61 ms. Allocated memory is still 166.7 MB. Free memory was 143.3 MB in the beginning and 141.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.75 ms. Allocated memory is still 166.7 MB. Free memory was 141.7 MB in the beginning and 140.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 449.03 ms. Allocated memory is still 166.7 MB. Free memory was 140.2 MB in the beginning and 120.3 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 24179.17 ms. Allocated memory was 166.7 MB in the beginning and 241.2 MB in the end (delta: 74.4 MB). Free memory was 120.2 MB in the beginning and 82.4 MB in the end (delta: 37.8 MB). Peak memory consumption was 112.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 637 VarBasedMoverChecksPositive, 12 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 15 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.1s, 65 PlacesBefore, 20 PlacesAfterwards, 64 TransitionsBefore, 16 TransitionsAfterwards, 1144 CoEnabledTransitionPairs, 7 FixpointIterations, 16 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 62 TotalNumberOfCompositions, 1187 MoverChecksTotal - PositiveResult [Line: 685]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 24.0s, OverallIterations: 26, TraceHistogramMax: 6, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 396 SDtfs, 1107 SDslu, 1236 SDs, 0 SdLazy, 1256 SolverSat, 687 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 908 GetRequests, 395 SyntacticMatches, 31 SemanticMatches, 482 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2407 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 26 MinimizatonAttempts, 385 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 694 NumberOfCodeBlocks, 694 NumberOfCodeBlocksAsserted, 88 NumberOfCheckSat, 646 ConstructedInterpolants, 0 QuantifiedInterpolants, 37356 SizeOfPredicates, 136 NumberOfNonLiveVariables, 2486 ConjunctsInSsa, 231 ConjunctsInUnsatCore, 48 InterpolantComputations, 6 PerfectInterpolantSequences, 90/460 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 proved your program to be correct! Received shutdown request...