/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-WP.epf -i ../../../trunk/examples/svcomp/pthread/triangular-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 14:52:26,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 14:52:26,070 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 14:52:26,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 14:52:26,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 14:52:26,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 14:52:26,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 14:52:26,117 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 14:52:26,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 14:52:26,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 14:52:26,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 14:52:26,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 14:52:26,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 14:52:26,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 14:52:26,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 14:52:26,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 14:52:26,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 14:52:26,130 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 14:52:26,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 14:52:26,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 14:52:26,155 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 14:52:26,157 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 14:52:26,159 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 14:52:26,160 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 14:52:26,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-09 14:52:26,163 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-09 14:52:26,163 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-09 14:52:26,165 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-09 14:52:26,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-09 14:52:26,166 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-09 14:52:26,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 14:52:26,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 14:52:26,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 14:52:26,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 14:52:26,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 14:52:26,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 14:52:26,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 14:52:26,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 14:52:26,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 14:52:26,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 14:52:26,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 14:52:26,180 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-11-09 14:52:26,210 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 14:52:26,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 14:52:26,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 14:52:26,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 14:52:26,213 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 14:52:26,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 14:52:26,213 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 14:52:26,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 14:52:26,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 14:52:26,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 14:52:26,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 14:52:26,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 14:52:26,215 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 14:52:26,215 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 14:52:26,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 14:52:26,216 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 14:52:26,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 14:52:26,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 14:52:26,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 14:52:26,217 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 14:52:26,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 14:52:26,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 14:52:26,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 14:52:26,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 14:52:26,218 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 14:52:26,218 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 14:52:26,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 14:52:26,218 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 14:52:26,219 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 14:52:26,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 14:52:26,219 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 14:52:26,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 14:52:26,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 14:52:26,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 14:52:26,639 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 14:52:26,640 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 14:52:26,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-1.i [2020-11-09 14:52:26,738 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9734c7c98/9edd8667b5414ded92e09e6084b37f8c/FLAG46e389078 [2020-11-09 14:52:27,416 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 14:52:27,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-1.i [2020-11-09 14:52:27,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9734c7c98/9edd8667b5414ded92e09e6084b37f8c/FLAG46e389078 [2020-11-09 14:52:27,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9734c7c98/9edd8667b5414ded92e09e6084b37f8c [2020-11-09 14:52:27,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 14:52:27,708 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 14:52:27,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 14:52:27,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 14:52:27,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 14:52:27,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:52:27" (1/1) ... [2020-11-09 14:52:27,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a29d9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:27, skipping insertion in model container [2020-11-09 14:52:27,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:52:27" (1/1) ... [2020-11-09 14:52:27,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 14:52:27,775 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 14:52:28,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 14:52:28,279 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 14:52:28,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 14:52:28,432 INFO L208 MainTranslator]: Completed translation [2020-11-09 14:52:28,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:28 WrapperNode [2020-11-09 14:52:28,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 14:52:28,435 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 14:52:28,435 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 14:52:28,435 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 14:52:28,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:28" (1/1) ... [2020-11-09 14:52:28,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:28" (1/1) ... [2020-11-09 14:52:28,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 14:52:28,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 14:52:28,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 14:52:28,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 14:52:28,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:28" (1/1) ... [2020-11-09 14:52:28,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:28" (1/1) ... [2020-11-09 14:52:28,509 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:28" (1/1) ... [2020-11-09 14:52:28,509 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:28" (1/1) ... [2020-11-09 14:52:28,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:28" (1/1) ... [2020-11-09 14:52:28,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:28" (1/1) ... [2020-11-09 14:52:28,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:28" (1/1) ... [2020-11-09 14:52:28,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 14:52:28,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 14:52:28,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 14:52:28,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 14:52:28,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:28" (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 14:52:28,620 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-11-09 14:52:28,620 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-11-09 14:52:28,621 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-11-09 14:52:28,621 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-11-09 14:52:28,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 14:52:28,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 14:52:28,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 14:52:28,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 14:52:28,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 14:52:28,625 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 14:52:28,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 14:52:28,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 14:52:28,628 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 14:52:29,188 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 14:52:29,188 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-09 14:52:29,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:52:29 BoogieIcfgContainer [2020-11-09 14:52:29,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 14:52:29,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 14:52:29,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 14:52:29,197 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 14:52:29,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:52:27" (1/3) ... [2020-11-09 14:52:29,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad831c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:52:29, skipping insertion in model container [2020-11-09 14:52:29,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:52:28" (2/3) ... [2020-11-09 14:52:29,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad831c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:52:29, skipping insertion in model container [2020-11-09 14:52:29,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:52:29" (3/3) ... [2020-11-09 14:52:29,202 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2020-11-09 14:52:29,221 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 14:52:29,221 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 14:52:29,226 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 14:52:29,227 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 14:52:29,266 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,266 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,267 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,267 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,267 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,267 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,268 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,268 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,268 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,269 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,269 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,269 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,270 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,270 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,270 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,270 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,271 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,271 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,271 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,272 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,272 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,272 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,272 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,273 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,273 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,273 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,274 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,274 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,274 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,275 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,275 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,275 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,276 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,276 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,276 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,276 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,277 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,277 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,277 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,278 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,278 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,278 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,279 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,279 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,279 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,279 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,280 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,280 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,280 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,281 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,281 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,281 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,281 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,282 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,282 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,282 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,285 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,285 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,286 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,286 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,286 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,286 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,296 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,296 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,296 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,297 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,297 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,297 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 14:52:29,302 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 14:52:29,317 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-11-09 14:52:29,344 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 14:52:29,344 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 14:52:29,344 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 14:52:29,344 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 14:52:29,345 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 14:52:29,345 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 14:52:29,345 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 14:52:29,345 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 14:52:29,358 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 14:52:29,359 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 64 transitions, 138 flow [2020-11-09 14:52:29,362 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 64 transitions, 138 flow [2020-11-09 14:52:29,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 65 places, 64 transitions, 138 flow [2020-11-09 14:52:29,407 INFO L129 PetriNetUnfolder]: 6/62 cut-off events. [2020-11-09 14:52:29,407 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 14:52:29,412 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 14:52:29,415 INFO L116 LiptonReduction]: Number of co-enabled transitions 1144 [2020-11-09 14:52:30,854 WARN L194 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-11-09 14:52:31,452 WARN L194 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-11-09 14:52:31,642 WARN L194 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-11-09 14:52:32,432 WARN L194 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-09 14:52:32,542 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 14:52:32,774 WARN L194 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-09 14:52:32,882 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-11-09 14:52:33,317 WARN L194 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-11-09 14:52:33,478 WARN L194 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-09 14:52:33,781 WARN L194 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-11-09 14:52:33,926 WARN L194 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-09 14:52:33,970 INFO L131 LiptonReduction]: Checked pairs total: 1187 [2020-11-09 14:52:33,971 INFO L133 LiptonReduction]: Total number of compositions: 62 [2020-11-09 14:52:33,977 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 42 flow [2020-11-09 14:52:33,987 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-11-09 14:52:33,989 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-11-09 14:52:33,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-09 14:52:33,995 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:52:33,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-09 14:52:33,996 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:52:34,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:52:34,001 INFO L82 PathProgramCache]: Analyzing trace with hash -805875314, now seen corresponding path program 1 times [2020-11-09 14:52:34,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:52:34,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027342421] [2020-11-09 14:52:34,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:52:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:34,271 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 14:52:34,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027342421] [2020-11-09 14:52:34,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 14:52:34,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 14:52:34,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1181852833] [2020-11-09 14:52:34,274 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:52:34,277 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:52:34,290 INFO L252 McrAutomatonBuilder]: Finished intersection with 7 states and 6 transitions. [2020-11-09 14:52:34,290 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:52:34,295 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 14:52:34,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 14:52:34,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:52:34,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 14:52:34,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 14:52:34,314 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-11-09 14:52:34,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:52:34,383 INFO L93 Difference]: Finished difference Result 75 states and 190 transitions. [2020-11-09 14:52:34,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 14:52:34,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-09 14:52:34,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:52:34,396 INFO L225 Difference]: With dead ends: 75 [2020-11-09 14:52:34,396 INFO L226 Difference]: Without dead ends: 42 [2020-11-09 14:52:34,398 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 14:52:34,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-09 14:52:34,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-11-09 14:52:34,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-09 14:52:34,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 98 transitions. [2020-11-09 14:52:34,442 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 98 transitions. Word has length 6 [2020-11-09 14:52:34,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:52:34,442 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 98 transitions. [2020-11-09 14:52:34,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 14:52:34,442 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 98 transitions. [2020-11-09 14:52:34,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 14:52:34,443 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:52:34,444 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:52:34,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 14:52:34,444 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:52:34,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:52:34,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1351909113, now seen corresponding path program 1 times [2020-11-09 14:52:34,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:52:34,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034749009] [2020-11-09 14:52:34,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:52:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:34,558 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 14:52:34,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034749009] [2020-11-09 14:52:34,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 14:52:34,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 14:52:34,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [228632353] [2020-11-09 14:52:34,559 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:52:34,561 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:52:34,564 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 16 transitions. [2020-11-09 14:52:34,564 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:52:34,600 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 14:52:34,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 14:52:34,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:52:34,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 14:52:34,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 14:52:34,605 INFO L87 Difference]: Start difference. First operand 42 states and 98 transitions. Second operand 5 states. [2020-11-09 14:52:34,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:52:34,668 INFO L93 Difference]: Finished difference Result 56 states and 130 transitions. [2020-11-09 14:52:34,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 14:52:34,669 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-09 14:52:34,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:52:34,671 INFO L225 Difference]: With dead ends: 56 [2020-11-09 14:52:34,671 INFO L226 Difference]: Without dead ends: 50 [2020-11-09 14:52:34,672 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 14:52:34,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-09 14:52:34,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2020-11-09 14:52:34,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-09 14:52:34,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 100 transitions. [2020-11-09 14:52:34,680 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 100 transitions. Word has length 8 [2020-11-09 14:52:34,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:52:34,681 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 100 transitions. [2020-11-09 14:52:34,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 14:52:34,681 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 100 transitions. [2020-11-09 14:52:34,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 14:52:34,682 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:52:34,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:52:34,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 14:52:34,683 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:52:34,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:52:34,683 INFO L82 PathProgramCache]: Analyzing trace with hash 2021583950, now seen corresponding path program 1 times [2020-11-09 14:52:34,685 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:52:34,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784132392] [2020-11-09 14:52:34,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:52:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:34,783 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 14:52:34,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784132392] [2020-11-09 14:52:34,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 14:52:34,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 14:52:34,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1357944881] [2020-11-09 14:52:34,785 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:52:34,786 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:52:34,790 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 25 transitions. [2020-11-09 14:52:34,790 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:52:34,811 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 14:52:34,811 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 14:52:34,835 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 14:52:34,835 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 14:52:34,857 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 14:52:34,857 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 14:52:34,871 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [474#(and (<= ~j~0 6) (<= ~i~0 16))] [2020-11-09 14:52:34,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 14:52:34,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:52:34,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 14:52:34,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-09 14:52:34,873 INFO L87 Difference]: Start difference. First operand 42 states and 100 transitions. Second operand 7 states. [2020-11-09 14:52:35,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:52:35,012 INFO L93 Difference]: Finished difference Result 66 states and 152 transitions. [2020-11-09 14:52:35,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-09 14:52:35,013 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-11-09 14:52:35,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:52:35,015 INFO L225 Difference]: With dead ends: 66 [2020-11-09 14:52:35,015 INFO L226 Difference]: Without dead ends: 50 [2020-11-09 14:52:35,016 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 14:52:35,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-09 14:52:35,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2020-11-09 14:52:35,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-09 14:52:35,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 99 transitions. [2020-11-09 14:52:35,023 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 99 transitions. Word has length 10 [2020-11-09 14:52:35,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:52:35,023 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 99 transitions. [2020-11-09 14:52:35,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 14:52:35,024 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 99 transitions. [2020-11-09 14:52:35,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 14:52:35,024 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:52:35,025 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:52:35,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 14:52:35,025 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:52:35,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:52:35,026 INFO L82 PathProgramCache]: Analyzing trace with hash 2082353870, now seen corresponding path program 2 times [2020-11-09 14:52:35,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:52:35,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121137462] [2020-11-09 14:52:35,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:52:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:35,097 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 14:52:35,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121137462] [2020-11-09 14:52:35,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 14:52:35,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 14:52:35,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2120618139] [2020-11-09 14:52:35,099 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:52:35,100 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:52:35,103 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 26 transitions. [2020-11-09 14:52:35,103 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:52:35,121 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 14:52:35,121 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 14:52:35,158 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [639#(and (<= ~i~0 7) (= ULTIMATE.start_main_~condI~0 0))] [2020-11-09 14:52:35,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 14:52:35,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:52:35,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 14:52:35,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-09 14:52:35,160 INFO L87 Difference]: Start difference. First operand 42 states and 99 transitions. Second operand 7 states. [2020-11-09 14:52:35,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:52:35,266 INFO L93 Difference]: Finished difference Result 67 states and 157 transitions. [2020-11-09 14:52:35,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 14:52:35,268 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-11-09 14:52:35,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:52:35,269 INFO L225 Difference]: With dead ends: 67 [2020-11-09 14:52:35,269 INFO L226 Difference]: Without dead ends: 54 [2020-11-09 14:52:35,270 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 14:52:35,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-09 14:52:35,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 42. [2020-11-09 14:52:35,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-09 14:52:35,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 102 transitions. [2020-11-09 14:52:35,277 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 102 transitions. Word has length 10 [2020-11-09 14:52:35,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:52:35,277 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 102 transitions. [2020-11-09 14:52:35,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 14:52:35,278 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 102 transitions. [2020-11-09 14:52:35,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 14:52:35,278 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:52:35,279 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:52:35,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 14:52:35,279 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:52:35,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:52:35,280 INFO L82 PathProgramCache]: Analyzing trace with hash 735328415, now seen corresponding path program 3 times [2020-11-09 14:52:35,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:52:35,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692099951] [2020-11-09 14:52:35,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:52:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:35,347 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 14:52:35,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692099951] [2020-11-09 14:52:35,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104338329] [2020-11-09 14:52:35,348 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 14:52:35,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-09 14:52:35,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 14:52:35,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-09 14:52:35,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 14:52:35,458 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 14:52:35,470 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 14:52:35,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 14:52:35,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-09 14:52:35,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [911110481] [2020-11-09 14:52:35,472 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:52:35,473 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:52:35,475 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-11-09 14:52:35,475 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:52:35,549 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [835#(and (<= ~i~0 5) (= ULTIMATE.start_main_~condI~0 0))] [2020-11-09 14:52:35,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-09 14:52:35,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:52:35,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-09 14:52:35,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-11-09 14:52:35,552 INFO L87 Difference]: Start difference. First operand 42 states and 102 transitions. Second operand 8 states. [2020-11-09 14:52:35,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:52:35,771 INFO L93 Difference]: Finished difference Result 63 states and 147 transitions. [2020-11-09 14:52:35,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-09 14:52:35,771 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-11-09 14:52:35,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:52:35,773 INFO L225 Difference]: With dead ends: 63 [2020-11-09 14:52:35,773 INFO L226 Difference]: Without dead ends: 54 [2020-11-09 14:52:35,773 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 14:52:35,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-09 14:52:35,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 37. [2020-11-09 14:52:35,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-09 14:52:35,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 87 transitions. [2020-11-09 14:52:35,781 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 87 transitions. Word has length 11 [2020-11-09 14:52:35,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:52:35,781 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 87 transitions. [2020-11-09 14:52:35,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-09 14:52:35,782 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 87 transitions. [2020-11-09 14:52:35,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 14:52:35,782 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:52:35,783 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:52:35,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 14:52:35,998 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:52:35,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:52:36,000 INFO L82 PathProgramCache]: Analyzing trace with hash 128488628, now seen corresponding path program 4 times [2020-11-09 14:52:36,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:52:36,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009147331] [2020-11-09 14:52:36,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:52:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:36,132 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 14:52:36,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009147331] [2020-11-09 14:52:36,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590178617] [2020-11-09 14:52:36,133 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 14:52:36,215 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 14:52:36,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 14:52:36,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-09 14:52:36,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 14:52:36,244 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 14:52:36,255 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 14:52:36,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 14:52:36,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-11-09 14:52:36,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [138695674] [2020-11-09 14:52:36,256 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:52:36,258 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:52:36,260 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-11-09 14:52:36,261 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:52:36,297 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 14:52:36,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-09 14:52:36,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:52:36,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-09 14:52:36,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-09 14:52:36,299 INFO L87 Difference]: Start difference. First operand 37 states and 87 transitions. Second operand 7 states. [2020-11-09 14:52:36,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:52:36,454 INFO L93 Difference]: Finished difference Result 56 states and 133 transitions. [2020-11-09 14:52:36,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-09 14:52:36,455 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-11-09 14:52:36,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:52:36,457 INFO L225 Difference]: With dead ends: 56 [2020-11-09 14:52:36,457 INFO L226 Difference]: Without dead ends: 51 [2020-11-09 14:52:36,457 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 14:52:36,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-09 14:52:36,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 43. [2020-11-09 14:52:36,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-09 14:52:36,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 105 transitions. [2020-11-09 14:52:36,472 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 105 transitions. Word has length 11 [2020-11-09 14:52:36,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:52:36,473 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 105 transitions. [2020-11-09 14:52:36,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-09 14:52:36,475 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 105 transitions. [2020-11-09 14:52:36,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 14:52:36,476 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:52:36,476 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:52:36,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 14:52:36,691 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:52:36,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:52:36,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1416964401, now seen corresponding path program 5 times [2020-11-09 14:52:36,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:52:36,694 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698319245] [2020-11-09 14:52:36,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:52:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:36,833 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 14:52:36,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698319245] [2020-11-09 14:52:36,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703369071] [2020-11-09 14:52:36,834 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 14:52:36,884 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 14:52:36,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 14:52:36,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 14:52:36,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 14:52:36,890 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 14:52:36,903 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 14:52:36,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 14:52:36,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-11-09 14:52:36,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [421630000] [2020-11-09 14:52:36,904 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:52:36,906 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:52:36,909 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 27 transitions. [2020-11-09 14:52:36,909 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:52:36,911 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 14:52:36,911 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 14:52:36,932 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 14:52:36,933 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 14:52:36,966 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 14:52:36,967 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 14:52:36,979 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1218#(and (<= ~j~0 6) (<= ~i~0 16))] [2020-11-09 14:52:36,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-09 14:52:36,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:52:36,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-09 14:52:36,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-11-09 14:52:36,981 INFO L87 Difference]: Start difference. First operand 43 states and 105 transitions. Second operand 9 states. [2020-11-09 14:52:37,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:52:37,145 INFO L93 Difference]: Finished difference Result 56 states and 131 transitions. [2020-11-09 14:52:37,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-09 14:52:37,146 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-11-09 14:52:37,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:52:37,148 INFO L225 Difference]: With dead ends: 56 [2020-11-09 14:52:37,150 INFO L226 Difference]: Without dead ends: 50 [2020-11-09 14:52:37,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-11-09 14:52:37,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-09 14:52:37,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 47. [2020-11-09 14:52:37,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-09 14:52:37,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 113 transitions. [2020-11-09 14:52:37,160 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 113 transitions. Word has length 12 [2020-11-09 14:52:37,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:52:37,160 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 113 transitions. [2020-11-09 14:52:37,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-09 14:52:37,160 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 113 transitions. [2020-11-09 14:52:37,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 14:52:37,165 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:52:37,165 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:52:37,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 14:52:37,369 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:52:37,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:52:37,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1320372483, now seen corresponding path program 6 times [2020-11-09 14:52:37,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:52:37,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420594979] [2020-11-09 14:52:37,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:52:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:37,486 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 14:52:37,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420594979] [2020-11-09 14:52:37,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476218382] [2020-11-09 14:52:37,487 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 14:52:37,551 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-11-09 14:52:37,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 14:52:37,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-09 14:52:37,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 14:52:37,584 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 14:52:37,596 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 14:52:37,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 14:52:37,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-09 14:52:37,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1198293598] [2020-11-09 14:52:37,597 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:52:37,598 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:52:37,601 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 20 transitions. [2020-11-09 14:52:37,601 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:52:37,620 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 14:52:37,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-09 14:52:37,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:52:37,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-09 14:52:37,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-09 14:52:37,621 INFO L87 Difference]: Start difference. First operand 47 states and 113 transitions. Second operand 8 states. [2020-11-09 14:52:37,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:52:37,820 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2020-11-09 14:52:37,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-09 14:52:37,820 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-11-09 14:52:37,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:52:37,822 INFO L225 Difference]: With dead ends: 64 [2020-11-09 14:52:37,822 INFO L226 Difference]: Without dead ends: 59 [2020-11-09 14:52:37,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2020-11-09 14:52:37,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-09 14:52:37,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 42. [2020-11-09 14:52:37,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-09 14:52:37,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 99 transitions. [2020-11-09 14:52:37,829 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 99 transitions. Word has length 12 [2020-11-09 14:52:37,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:52:37,829 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 99 transitions. [2020-11-09 14:52:37,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-09 14:52:37,829 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 99 transitions. [2020-11-09 14:52:37,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 14:52:37,830 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:52:37,830 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:52:38,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 14:52:38,043 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:52:38,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:52:38,044 INFO L82 PathProgramCache]: Analyzing trace with hash -311794613, now seen corresponding path program 7 times [2020-11-09 14:52:38,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:52:38,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337116899] [2020-11-09 14:52:38,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:52:38,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:38,131 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 14:52:38,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337116899] [2020-11-09 14:52:38,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735203593] [2020-11-09 14:52:38,131 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 14:52:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:38,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-09 14:52:38,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 14:52:38,210 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 14:52:38,220 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 14:52:38,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 14:52:38,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-09 14:52:38,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1455131385] [2020-11-09 14:52:38,221 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:52:38,222 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:52:38,225 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-11-09 14:52:38,225 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:52:38,256 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1631#(and (<= ~i~0 9) (= ULTIMATE.start_main_~condI~0 0))] [2020-11-09 14:52:38,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-09 14:52:38,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:52:38,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-09 14:52:38,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-09 14:52:38,258 INFO L87 Difference]: Start difference. First operand 42 states and 99 transitions. Second operand 9 states. [2020-11-09 14:52:38,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:52:38,456 INFO L93 Difference]: Finished difference Result 72 states and 169 transitions. [2020-11-09 14:52:38,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-09 14:52:38,458 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-11-09 14:52:38,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:52:38,459 INFO L225 Difference]: With dead ends: 72 [2020-11-09 14:52:38,460 INFO L226 Difference]: Without dead ends: 63 [2020-11-09 14:52:38,460 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2020-11-09 14:52:38,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-09 14:52:38,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 48. [2020-11-09 14:52:38,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-09 14:52:38,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 117 transitions. [2020-11-09 14:52:38,473 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 117 transitions. Word has length 12 [2020-11-09 14:52:38,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:52:38,476 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 117 transitions. [2020-11-09 14:52:38,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-09 14:52:38,476 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 117 transitions. [2020-11-09 14:52:38,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 14:52:38,476 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:52:38,477 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:52:38,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 14:52:38,678 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:52:38,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:52:38,679 INFO L82 PathProgramCache]: Analyzing trace with hash -2018100772, now seen corresponding path program 8 times [2020-11-09 14:52:38,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:52:38,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317378698] [2020-11-09 14:52:38,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:52:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:38,834 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 14:52:38,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317378698] [2020-11-09 14:52:38,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521728463] [2020-11-09 14:52:38,836 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 14:52:38,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 14:52:38,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 14:52:38,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 14:52:38,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 14:52:38,939 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 14:52:38,951 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 14:52:38,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 14:52:38,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-11-09 14:52:38,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1662360831] [2020-11-09 14:52:38,954 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:52:38,956 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:52:38,960 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 23 transitions. [2020-11-09 14:52:38,960 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:52:38,985 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1860#(and (<= ~i~0 7) (= ULTIMATE.start_main_~condI~0 0))] [2020-11-09 14:52:38,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-09 14:52:38,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:52:38,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-09 14:52:38,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-09 14:52:38,987 INFO L87 Difference]: Start difference. First operand 48 states and 117 transitions. Second operand 10 states. [2020-11-09 14:52:39,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:52:39,241 INFO L93 Difference]: Finished difference Result 72 states and 169 transitions. [2020-11-09 14:52:39,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-09 14:52:39,244 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-11-09 14:52:39,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:52:39,245 INFO L225 Difference]: With dead ends: 72 [2020-11-09 14:52:39,246 INFO L226 Difference]: Without dead ends: 63 [2020-11-09 14:52:39,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=146, Invalid=316, Unknown=0, NotChecked=0, Total=462 [2020-11-09 14:52:39,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-09 14:52:39,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 41. [2020-11-09 14:52:39,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-09 14:52:39,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 97 transitions. [2020-11-09 14:52:39,251 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 97 transitions. Word has length 13 [2020-11-09 14:52:39,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:52:39,252 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 97 transitions. [2020-11-09 14:52:39,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-09 14:52:39,252 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 97 transitions. [2020-11-09 14:52:39,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 14:52:39,253 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:52:39,253 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:52:39,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 14:52:39,466 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:52:39,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:52:39,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1075670313, now seen corresponding path program 9 times [2020-11-09 14:52:39,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:52:39,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670660736] [2020-11-09 14:52:39,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:52:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:39,552 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 14:52:39,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670660736] [2020-11-09 14:52:39,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517672357] [2020-11-09 14:52:39,553 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 14:52:39,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-09 14:52:39,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 14:52:39,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-09 14:52:39,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 14:52:39,640 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 14:52:39,651 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 14:52:39,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 14:52:39,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-11-09 14:52:39,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1509308035] [2020-11-09 14:52:39,652 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:52:39,653 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:52:39,657 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-11-09 14:52:39,657 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:52:39,673 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 14:52:39,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-09 14:52:39,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:52:39,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-09 14:52:39,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-09 14:52:39,675 INFO L87 Difference]: Start difference. First operand 41 states and 97 transitions. Second operand 9 states. [2020-11-09 14:52:39,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:52:39,875 INFO L93 Difference]: Finished difference Result 64 states and 153 transitions. [2020-11-09 14:52:39,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-09 14:52:39,876 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-11-09 14:52:39,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:52:39,877 INFO L225 Difference]: With dead ends: 64 [2020-11-09 14:52:39,877 INFO L226 Difference]: Without dead ends: 59 [2020-11-09 14:52:39,877 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 14:52:39,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-09 14:52:39,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49. [2020-11-09 14:52:39,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-09 14:52:39,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 121 transitions. [2020-11-09 14:52:39,885 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 121 transitions. Word has length 13 [2020-11-09 14:52:39,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:52:39,885 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 121 transitions. [2020-11-09 14:52:39,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-09 14:52:39,885 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 121 transitions. [2020-11-09 14:52:39,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 14:52:39,887 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:52:39,887 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:52:40,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 14:52:40,099 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:52:40,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:52:40,100 INFO L82 PathProgramCache]: Analyzing trace with hash 198162772, now seen corresponding path program 10 times [2020-11-09 14:52:40,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:52:40,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711642358] [2020-11-09 14:52:40,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:52:40,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:40,192 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 14:52:40,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711642358] [2020-11-09 14:52:40,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350133374] [2020-11-09 14:52:40,193 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 14:52:40,245 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 14:52:40,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 14:52:40,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-09 14:52:40,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 14:52:40,250 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 14:52:40,290 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 14:52:40,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 14:52:40,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-11-09 14:52:40,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2000895512] [2020-11-09 14:52:40,292 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:52:40,293 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:52:40,296 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 29 transitions. [2020-11-09 14:52:40,297 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:52:40,324 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 14:52:40,324 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 14:52:40,343 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 14:52:40,345 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 14:52:40,360 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 14:52:40,360 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 14:52:40,377 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2312#(and (<= ~j~0 6) (<= ~i~0 16))] [2020-11-09 14:52:40,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-09 14:52:40,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:52:40,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-09 14:52:40,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-09 14:52:40,379 INFO L87 Difference]: Start difference. First operand 49 states and 121 transitions. Second operand 11 states. [2020-11-09 14:52:40,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:52:40,550 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2020-11-09 14:52:40,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-09 14:52:40,551 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-11-09 14:52:40,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:52:40,552 INFO L225 Difference]: With dead ends: 64 [2020-11-09 14:52:40,552 INFO L226 Difference]: Without dead ends: 58 [2020-11-09 14:52:40,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2020-11-09 14:52:40,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-09 14:52:40,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 53. [2020-11-09 14:52:40,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-09 14:52:40,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 129 transitions. [2020-11-09 14:52:40,568 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 129 transitions. Word has length 14 [2020-11-09 14:52:40,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:52:40,568 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 129 transitions. [2020-11-09 14:52:40,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-09 14:52:40,569 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 129 transitions. [2020-11-09 14:52:40,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 14:52:40,569 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:52:40,569 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:52:40,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-09 14:52:40,781 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:52:40,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:52:40,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1863413606, now seen corresponding path program 11 times [2020-11-09 14:52:40,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:52:40,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387193826] [2020-11-09 14:52:40,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:52:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:40,862 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 14:52:40,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387193826] [2020-11-09 14:52:40,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397254969] [2020-11-09 14:52:40,863 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 14:52:40,924 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-11-09 14:52:40,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 14:52:40,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-09 14:52:40,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 14:52:40,949 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 14:52:40,959 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 14:52:40,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 14:52:40,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-09 14:52:40,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1050116230] [2020-11-09 14:52:40,960 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:52:40,962 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:52:40,964 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 22 transitions. [2020-11-09 14:52:40,965 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:52:40,971 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 14:52:40,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-09 14:52:40,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:52:40,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-09 14:52:40,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-11-09 14:52:40,972 INFO L87 Difference]: Start difference. First operand 53 states and 129 transitions. Second operand 10 states. [2020-11-09 14:52:41,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:52:41,306 INFO L93 Difference]: Finished difference Result 74 states and 175 transitions. [2020-11-09 14:52:41,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-09 14:52:41,307 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-09 14:52:41,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:52:41,308 INFO L225 Difference]: With dead ends: 74 [2020-11-09 14:52:41,308 INFO L226 Difference]: Without dead ends: 69 [2020-11-09 14:52:41,309 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 14:52:41,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-11-09 14:52:41,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 46. [2020-11-09 14:52:41,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-09 14:52:41,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 109 transitions. [2020-11-09 14:52:41,313 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 109 transitions. Word has length 14 [2020-11-09 14:52:41,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:52:41,314 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 109 transitions. [2020-11-09 14:52:41,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-09 14:52:41,314 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 109 transitions. [2020-11-09 14:52:41,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 14:52:41,315 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:52:41,315 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:52:41,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 14:52:41,530 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:52:41,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:52:41,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1013983880, now seen corresponding path program 12 times [2020-11-09 14:52:41,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:52:41,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047574280] [2020-11-09 14:52:41,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:52:41,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:41,604 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 14:52:41,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047574280] [2020-11-09 14:52:41,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178754609] [2020-11-09 14:52:41,605 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 14:52:41,666 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-11-09 14:52:41,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 14:52:41,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-09 14:52:41,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 14:52:41,703 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 14:52:41,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 14:52:41,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-09 14:52:41,704 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1341789888] [2020-11-09 14:52:41,704 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:52:41,706 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:52:41,709 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 28 transitions. [2020-11-09 14:52:41,709 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:52:41,743 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2791#(and (= ULTIMATE.start_main_~condI~0 0) (<= ~i~0 11))] [2020-11-09 14:52:41,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-09 14:52:41,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:52:41,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-09 14:52:41,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-11-09 14:52:41,744 INFO L87 Difference]: Start difference. First operand 46 states and 109 transitions. Second operand 11 states. [2020-11-09 14:52:42,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:52:42,004 INFO L93 Difference]: Finished difference Result 82 states and 193 transitions. [2020-11-09 14:52:42,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-09 14:52:42,004 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-11-09 14:52:42,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:52:42,006 INFO L225 Difference]: With dead ends: 82 [2020-11-09 14:52:42,006 INFO L226 Difference]: Without dead ends: 73 [2020-11-09 14:52:42,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2020-11-09 14:52:42,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-09 14:52:42,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 54. [2020-11-09 14:52:42,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-09 14:52:42,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 133 transitions. [2020-11-09 14:52:42,013 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 133 transitions. Word has length 14 [2020-11-09 14:52:42,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:52:42,013 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 133 transitions. [2020-11-09 14:52:42,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-09 14:52:42,013 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 133 transitions. [2020-11-09 14:52:42,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 14:52:42,014 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:52:42,014 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:52:42,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 14:52:42,225 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:52:42,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:52:42,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1931272153, now seen corresponding path program 13 times [2020-11-09 14:52:42,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:52:42,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716640808] [2020-11-09 14:52:42,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:52:42,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:42,308 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 14:52:42,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716640808] [2020-11-09 14:52:42,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052825537] [2020-11-09 14:52:42,309 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 14:52:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:42,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-09 14:52:42,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 14:52:42,385 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 14:52:42,401 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 14:52:42,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 14:52:42,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-11-09 14:52:42,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1283949228] [2020-11-09 14:52:42,402 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:52:42,404 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:52:42,407 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 25 transitions. [2020-11-09 14:52:42,408 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:52:42,430 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3058#(and (<= ~i~0 9) (= ULTIMATE.start_main_~condI~0 0))] [2020-11-09 14:52:42,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-09 14:52:42,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:52:42,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-09 14:52:42,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-11-09 14:52:42,431 INFO L87 Difference]: Start difference. First operand 54 states and 133 transitions. Second operand 12 states. [2020-11-09 14:52:42,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:52:42,750 INFO L93 Difference]: Finished difference Result 82 states and 193 transitions. [2020-11-09 14:52:42,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-09 14:52:42,750 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-11-09 14:52:42,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:52:42,752 INFO L225 Difference]: With dead ends: 82 [2020-11-09 14:52:42,752 INFO L226 Difference]: Without dead ends: 73 [2020-11-09 14:52:42,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=238, Invalid=518, Unknown=0, NotChecked=0, Total=756 [2020-11-09 14:52:42,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-09 14:52:42,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 45. [2020-11-09 14:52:42,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-09 14:52:42,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 107 transitions. [2020-11-09 14:52:42,762 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 107 transitions. Word has length 15 [2020-11-09 14:52:42,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:52:42,763 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 107 transitions. [2020-11-09 14:52:42,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-09 14:52:42,763 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 107 transitions. [2020-11-09 14:52:42,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 14:52:42,764 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:52:42,764 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:52:42,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-09 14:52:42,976 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:52:42,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:52:42,977 INFO L82 PathProgramCache]: Analyzing trace with hash 1368757306, now seen corresponding path program 14 times [2020-11-09 14:52:42,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:52:42,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450267292] [2020-11-09 14:52:42,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:52:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:43,068 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 14:52:43,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450267292] [2020-11-09 14:52:43,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360581136] [2020-11-09 14:52:43,069 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 14:52:43,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 14:52:43,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 14:52:43,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-09 14:52:43,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 14:52:43,162 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 14:52:43,174 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 14:52:43,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 14:52:43,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-11-09 14:52:43,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1083483778] [2020-11-09 14:52:43,176 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:52:43,178 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:52:43,181 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 27 transitions. [2020-11-09 14:52:43,181 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:52:43,198 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 14:52:43,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-09 14:52:43,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:52:43,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-09 14:52:43,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-11-09 14:52:43,200 INFO L87 Difference]: Start difference. First operand 45 states and 107 transitions. Second operand 11 states. [2020-11-09 14:52:43,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:52:43,466 INFO L93 Difference]: Finished difference Result 72 states and 173 transitions. [2020-11-09 14:52:43,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-09 14:52:43,466 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 15 [2020-11-09 14:52:43,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:52:43,467 INFO L225 Difference]: With dead ends: 72 [2020-11-09 14:52:43,467 INFO L226 Difference]: Without dead ends: 67 [2020-11-09 14:52:43,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=408, Unknown=0, NotChecked=0, Total=600 [2020-11-09 14:52:43,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-09 14:52:43,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2020-11-09 14:52:43,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-09 14:52:43,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 137 transitions. [2020-11-09 14:52:43,474 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 137 transitions. Word has length 15 [2020-11-09 14:52:43,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:52:43,474 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 137 transitions. [2020-11-09 14:52:43,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-09 14:52:43,474 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 137 transitions. [2020-11-09 14:52:43,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 14:52:43,475 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:52:43,475 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:52:43,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-09 14:52:43,685 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:52:43,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:52:43,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1455869111, now seen corresponding path program 15 times [2020-11-09 14:52:43,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:52:43,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568439603] [2020-11-09 14:52:43,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:52:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:43,864 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 14:52:43,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568439603] [2020-11-09 14:52:43,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088974446] [2020-11-09 14:52:43,865 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 14:52:43,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-09 14:52:43,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 14:52:43,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-09 14:52:43,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 14:52:43,930 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 14:52:43,943 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 14:52:43,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 14:52:43,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-11-09 14:52:43,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1651283305] [2020-11-09 14:52:43,944 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:52:43,945 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:52:43,949 INFO L252 McrAutomatonBuilder]: Finished intersection with 24 states and 31 transitions. [2020-11-09 14:52:43,949 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:52:43,957 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 14:52:43,957 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 14:52:43,978 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 14:52:43,979 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 14:52:44,001 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 14:52:44,001 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 14:52:44,015 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3580#(and (<= ~j~0 6) (<= ~i~0 16))] [2020-11-09 14:52:44,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 14:52:44,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:52:44,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 14:52:44,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-11-09 14:52:44,018 INFO L87 Difference]: Start difference. First operand 55 states and 137 transitions. Second operand 13 states. [2020-11-09 14:52:44,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:52:44,245 INFO L93 Difference]: Finished difference Result 72 states and 171 transitions. [2020-11-09 14:52:44,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-09 14:52:44,245 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-11-09 14:52:44,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:52:44,248 INFO L225 Difference]: With dead ends: 72 [2020-11-09 14:52:44,248 INFO L226 Difference]: Without dead ends: 66 [2020-11-09 14:52:44,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=160, Invalid=346, Unknown=0, NotChecked=0, Total=506 [2020-11-09 14:52:44,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-09 14:52:44,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 59. [2020-11-09 14:52:44,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-11-09 14:52:44,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 145 transitions. [2020-11-09 14:52:44,257 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 145 transitions. Word has length 16 [2020-11-09 14:52:44,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:52:44,257 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 145 transitions. [2020-11-09 14:52:44,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 14:52:44,257 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 145 transitions. [2020-11-09 14:52:44,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 14:52:44,258 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:52:44,258 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:52:44,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-09 14:52:44,468 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:52:44,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:52:44,469 INFO L82 PathProgramCache]: Analyzing trace with hash -260077303, now seen corresponding path program 16 times [2020-11-09 14:52:44,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:52:44,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350892957] [2020-11-09 14:52:44,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:52:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:44,595 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 14:52:44,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350892957] [2020-11-09 14:52:44,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558172810] [2020-11-09 14:52:44,596 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 14:52:44,649 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 14:52:44,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 14:52:44,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-09 14:52:44,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 14:52:44,681 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 14:52:44,692 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 14:52:44,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 14:52:44,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-11-09 14:52:44,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [894072620] [2020-11-09 14:52:44,693 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:52:44,695 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:52:44,698 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 24 transitions. [2020-11-09 14:52:44,698 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:52:44,704 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 14:52:44,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-09 14:52:44,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:52:44,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-09 14:52:44,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-11-09 14:52:44,705 INFO L87 Difference]: Start difference. First operand 59 states and 145 transitions. Second operand 12 states. [2020-11-09 14:52:45,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:52:45,099 INFO L93 Difference]: Finished difference Result 84 states and 199 transitions. [2020-11-09 14:52:45,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-09 14:52:45,099 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2020-11-09 14:52:45,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:52:45,100 INFO L225 Difference]: With dead ends: 84 [2020-11-09 14:52:45,100 INFO L226 Difference]: Without dead ends: 79 [2020-11-09 14:52:45,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=281, Invalid=589, Unknown=0, NotChecked=0, Total=870 [2020-11-09 14:52:45,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-11-09 14:52:45,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 50. [2020-11-09 14:52:45,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-09 14:52:45,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 119 transitions. [2020-11-09 14:52:45,104 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 119 transitions. Word has length 16 [2020-11-09 14:52:45,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:52:45,104 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 119 transitions. [2020-11-09 14:52:45,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-09 14:52:45,105 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 119 transitions. [2020-11-09 14:52:45,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-09 14:52:45,105 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:52:45,105 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:52:45,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 14:52:45,314 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:52:45,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:52:45,315 INFO L82 PathProgramCache]: Analyzing trace with hash -518171259, now seen corresponding path program 17 times [2020-11-09 14:52:45,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:52:45,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055667515] [2020-11-09 14:52:45,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:52:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:45,401 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 14:52:45,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055667515] [2020-11-09 14:52:45,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230641067] [2020-11-09 14:52:45,401 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 14:52:45,464 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-11-09 14:52:45,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 14:52:45,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-09 14:52:45,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 14:52:45,492 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 14:52:45,504 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 14:52:45,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 14:52:45,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-11-09 14:52:45,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [892904424] [2020-11-09 14:52:45,505 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:52:45,507 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:52:45,510 INFO L252 McrAutomatonBuilder]: Finished intersection with 24 states and 30 transitions. [2020-11-09 14:52:45,511 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:52:45,537 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4125#(and (<= ~i~0 13) (= ULTIMATE.start_main_~condI~0 0))] [2020-11-09 14:52:45,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 14:52:45,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:52:45,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 14:52:45,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-11-09 14:52:45,539 INFO L87 Difference]: Start difference. First operand 50 states and 119 transitions. Second operand 13 states. [2020-11-09 14:52:45,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:52:45,901 INFO L93 Difference]: Finished difference Result 92 states and 217 transitions. [2020-11-09 14:52:45,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-09 14:52:45,902 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-11-09 14:52:45,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:52:45,903 INFO L225 Difference]: With dead ends: 92 [2020-11-09 14:52:45,903 INFO L226 Difference]: Without dead ends: 83 [2020-11-09 14:52:45,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=250, Invalid=562, Unknown=0, NotChecked=0, Total=812 [2020-11-09 14:52:45,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-09 14:52:45,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 60. [2020-11-09 14:52:45,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-09 14:52:45,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 149 transitions. [2020-11-09 14:52:45,908 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 149 transitions. Word has length 16 [2020-11-09 14:52:45,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:52:45,908 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 149 transitions. [2020-11-09 14:52:45,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 14:52:45,909 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 149 transitions. [2020-11-09 14:52:45,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 14:52:45,909 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:52:45,909 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:52:46,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 14:52:46,110 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:52:46,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:52:46,111 INFO L82 PathProgramCache]: Analyzing trace with hash 527563414, now seen corresponding path program 18 times [2020-11-09 14:52:46,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:52:46,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898389945] [2020-11-09 14:52:46,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:52:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:46,203 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 14:52:46,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898389945] [2020-11-09 14:52:46,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036024337] [2020-11-09 14:52:46,204 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 14:52:46,279 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2020-11-09 14:52:46,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 14:52:46,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-09 14:52:46,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 14:52:46,333 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 14:52:46,347 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 14:52:46,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 14:52:46,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-11-09 14:52:46,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1699425020] [2020-11-09 14:52:46,348 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:52:46,350 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:52:46,355 INFO L252 McrAutomatonBuilder]: Finished intersection with 23 states and 27 transitions. [2020-11-09 14:52:46,355 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:52:46,375 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4430#(and (= ULTIMATE.start_main_~condI~0 0) (<= ~i~0 11))] [2020-11-09 14:52:46,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-09 14:52:46,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:52:46,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-09 14:52:46,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-11-09 14:52:46,377 INFO L87 Difference]: Start difference. First operand 60 states and 149 transitions. Second operand 14 states. [2020-11-09 14:52:46,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:52:46,810 INFO L93 Difference]: Finished difference Result 92 states and 217 transitions. [2020-11-09 14:52:46,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-09 14:52:46,810 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-11-09 14:52:46,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:52:46,811 INFO L225 Difference]: With dead ends: 92 [2020-11-09 14:52:46,811 INFO L226 Difference]: Without dead ends: 83 [2020-11-09 14:52:46,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=352, Invalid=770, Unknown=0, NotChecked=0, Total=1122 [2020-11-09 14:52:46,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-09 14:52:46,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 49. [2020-11-09 14:52:46,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-09 14:52:46,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 117 transitions. [2020-11-09 14:52:46,816 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 117 transitions. Word has length 17 [2020-11-09 14:52:46,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:52:46,816 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 117 transitions. [2020-11-09 14:52:46,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-09 14:52:46,816 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 117 transitions. [2020-11-09 14:52:46,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 14:52:46,817 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:52:46,817 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:52:47,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 14:52:47,028 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:52:47,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:52:47,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1116588253, now seen corresponding path program 19 times [2020-11-09 14:52:47,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:52:47,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961046022] [2020-11-09 14:52:47,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:52:47,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:47,118 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 14:52:47,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961046022] [2020-11-09 14:52:47,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716952544] [2020-11-09 14:52:47,119 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 14:52:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:47,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-09 14:52:47,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 14:52:47,211 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 14:52:47,224 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 14:52:47,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 14:52:47,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-11-09 14:52:47,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [402051909] [2020-11-09 14:52:47,225 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:52:47,227 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:52:47,230 INFO L252 McrAutomatonBuilder]: Finished intersection with 24 states and 29 transitions. [2020-11-09 14:52:47,230 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:52:47,254 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 14:52:47,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-09 14:52:47,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:52:47,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-09 14:52:47,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-11-09 14:52:47,257 INFO L87 Difference]: Start difference. First operand 49 states and 117 transitions. Second operand 13 states. [2020-11-09 14:52:47,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:52:47,686 INFO L93 Difference]: Finished difference Result 80 states and 193 transitions. [2020-11-09 14:52:47,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-09 14:52:47,687 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 17 [2020-11-09 14:52:47,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:52:47,690 INFO L225 Difference]: With dead ends: 80 [2020-11-09 14:52:47,690 INFO L226 Difference]: Without dead ends: 75 [2020-11-09 14:52:47,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=294, Invalid=636, Unknown=0, NotChecked=0, Total=930 [2020-11-09 14:52:47,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-11-09 14:52:47,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2020-11-09 14:52:47,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-09 14:52:47,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 153 transitions. [2020-11-09 14:52:47,695 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 153 transitions. Word has length 17 [2020-11-09 14:52:47,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:52:47,695 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 153 transitions. [2020-11-09 14:52:47,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-09 14:52:47,695 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 153 transitions. [2020-11-09 14:52:47,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 14:52:47,696 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:52:47,696 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:52:47,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-11-09 14:52:47,907 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:52:47,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:52:47,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1069116582, now seen corresponding path program 20 times [2020-11-09 14:52:47,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:52:47,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093386583] [2020-11-09 14:52:47,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:52:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:48,072 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 14:52:48,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093386583] [2020-11-09 14:52:48,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601293541] [2020-11-09 14:52:48,073 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 14:52:48,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-09 14:52:48,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 14:52:48,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-09 14:52:48,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 14:52:48,140 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 14:52:48,160 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 14:52:48,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 14:52:48,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-11-09 14:52:48,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1731712645] [2020-11-09 14:52:48,161 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:52:48,164 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:52:48,167 INFO L252 McrAutomatonBuilder]: Finished intersection with 26 states and 33 transitions. [2020-11-09 14:52:48,168 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:52:48,173 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 14:52:48,174 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 14:52:48,195 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 14:52:48,195 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 14:52:48,212 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-09 14:52:48,212 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-09 14:52:48,224 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5022#(and (<= ~j~0 6) (<= ~i~0 16))] [2020-11-09 14:52:48,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-09 14:52:48,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:52:48,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-09 14:52:48,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-11-09 14:52:48,226 INFO L87 Difference]: Start difference. First operand 61 states and 153 transitions. Second operand 15 states. [2020-11-09 14:52:48,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:52:48,488 INFO L93 Difference]: Finished difference Result 80 states and 191 transitions. [2020-11-09 14:52:48,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-09 14:52:48,489 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-11-09 14:52:48,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:52:48,489 INFO L225 Difference]: With dead ends: 80 [2020-11-09 14:52:48,490 INFO L226 Difference]: Without dead ends: 74 [2020-11-09 14:52:48,490 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 14:52:48,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-09 14:52:48,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 65. [2020-11-09 14:52:48,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-09 14:52:48,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 161 transitions. [2020-11-09 14:52:48,494 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 161 transitions. Word has length 18 [2020-11-09 14:52:48,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:52:48,494 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 161 transitions. [2020-11-09 14:52:48,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-09 14:52:48,495 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 161 transitions. [2020-11-09 14:52:48,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 14:52:48,495 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:52:48,495 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:52:48,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-09 14:52:48,706 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:52:48,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:52:48,706 INFO L82 PathProgramCache]: Analyzing trace with hash -825375252, now seen corresponding path program 21 times [2020-11-09 14:52:48,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:52:48,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264643765] [2020-11-09 14:52:48,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:52:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:48,820 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 14:52:48,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264643765] [2020-11-09 14:52:48,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918581517] [2020-11-09 14:52:48,821 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 14:52:48,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-09 14:52:48,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 14:52:48,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-09 14:52:48,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 14:52:48,911 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-09 14:52:48,922 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 14:52:48,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 14:52:48,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-11-09 14:52:48,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1988370372] [2020-11-09 14:52:48,923 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:52:48,925 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:52:48,928 INFO L252 McrAutomatonBuilder]: Finished intersection with 23 states and 26 transitions. [2020-11-09 14:52:48,928 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:52:48,934 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 14:52:48,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-09 14:52:48,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:52:48,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-09 14:52:48,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-11-09 14:52:48,936 INFO L87 Difference]: Start difference. First operand 65 states and 161 transitions. Second operand 14 states. [2020-11-09 14:52:49,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:52:49,363 INFO L93 Difference]: Finished difference Result 94 states and 223 transitions. [2020-11-09 14:52:49,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-09 14:52:49,364 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 18 [2020-11-09 14:52:49,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:52:49,365 INFO L225 Difference]: With dead ends: 94 [2020-11-09 14:52:49,365 INFO L226 Difference]: Without dead ends: 89 [2020-11-09 14:52:49,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=404, Invalid=856, Unknown=0, NotChecked=0, Total=1260 [2020-11-09 14:52:49,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-11-09 14:52:49,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 54. [2020-11-09 14:52:49,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-09 14:52:49,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 129 transitions. [2020-11-09 14:52:49,370 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 129 transitions. Word has length 18 [2020-11-09 14:52:49,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:52:49,370 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 129 transitions. [2020-11-09 14:52:49,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-09 14:52:49,371 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 129 transitions. [2020-11-09 14:52:49,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-09 14:52:49,371 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:52:49,371 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:52:49,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-09 14:52:49,580 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:52:49,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:52:49,581 INFO L82 PathProgramCache]: Analyzing trace with hash 254522690, now seen corresponding path program 22 times [2020-11-09 14:52:49,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:52:49,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076561048] [2020-11-09 14:52:49,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:52:49,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:49,691 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 14:52:49,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076561048] [2020-11-09 14:52:49,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583134223] [2020-11-09 14:52:49,694 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 14:52:49,757 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-09 14:52:49,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 14:52:49,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-09 14:52:49,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 14:52:49,805 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-09 14:52:49,819 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 14:52:49,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-09 14:52:49,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-11-09 14:52:49,820 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1528607101] [2020-11-09 14:52:49,820 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:52:49,823 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:52:49,828 INFO L252 McrAutomatonBuilder]: Finished intersection with 26 states and 32 transitions. [2020-11-09 14:52:49,828 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:52:49,856 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5633#(and (= ULTIMATE.start_main_~condI~0 0) (<= ~i~0 15))] [2020-11-09 14:52:49,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-09 14:52:49,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:52:49,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-09 14:52:49,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-11-09 14:52:49,857 INFO L87 Difference]: Start difference. First operand 54 states and 129 transitions. Second operand 15 states. [2020-11-09 14:52:50,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:52:50,348 INFO L93 Difference]: Finished difference Result 102 states and 241 transitions. [2020-11-09 14:52:50,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-09 14:52:50,349 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-11-09 14:52:50,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:52:50,350 INFO L225 Difference]: With dead ends: 102 [2020-11-09 14:52:50,351 INFO L226 Difference]: Without dead ends: 93 [2020-11-09 14:52:50,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=365, Invalid=825, Unknown=0, NotChecked=0, Total=1190 [2020-11-09 14:52:50,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-09 14:52:50,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 66. [2020-11-09 14:52:50,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-09 14:52:50,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 165 transitions. [2020-11-09 14:52:50,355 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 165 transitions. Word has length 18 [2020-11-09 14:52:50,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:52:50,356 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 165 transitions. [2020-11-09 14:52:50,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-09 14:52:50,356 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 165 transitions. [2020-11-09 14:52:50,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-09 14:52:50,356 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:52:50,356 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:52:50,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-11-09 14:52:50,568 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:52:50,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:52:50,568 INFO L82 PathProgramCache]: Analyzing trace with hash 183196179, now seen corresponding path program 23 times [2020-11-09 14:52:50,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:52:50,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070203180] [2020-11-09 14:52:50,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:52:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:50,627 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 14:52:50,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070203180] [2020-11-09 14:52:50,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230951581] [2020-11-09 14:52:50,627 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 14:52:50,702 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-09 14:52:50,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 14:52:50,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-09 14:52:50,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 14:52:50,734 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 14:52:50,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-09 14:52:50,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2020-11-09 14:52:50,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [68590844] [2020-11-09 14:52:50,735 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:52:50,737 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:52:50,740 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 29 transitions. [2020-11-09 14:52:50,740 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:52:50,750 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 14:52:50,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-09 14:52:50,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:52:50,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-09 14:52:50,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-11-09 14:52:50,751 INFO L87 Difference]: Start difference. First operand 66 states and 165 transitions. Second operand 8 states. [2020-11-09 14:52:50,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:52:50,762 INFO L93 Difference]: Finished difference Result 149 states and 333 transitions. [2020-11-09 14:52:50,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-09 14:52:50,763 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-11-09 14:52:50,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:52:50,763 INFO L225 Difference]: With dead ends: 149 [2020-11-09 14:52:50,763 INFO L226 Difference]: Without dead ends: 36 [2020-11-09 14:52:50,764 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 14:52:50,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-09 14:52:50,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-09 14:52:50,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-09 14:52:50,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 65 transitions. [2020-11-09 14:52:50,765 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 65 transitions. Word has length 19 [2020-11-09 14:52:50,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:52:50,765 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 65 transitions. [2020-11-09 14:52:50,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-09 14:52:50,766 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 65 transitions. [2020-11-09 14:52:50,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-09 14:52:50,766 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 14:52:50,766 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 14:52:50,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-11-09 14:52:50,967 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 14:52:50,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 14:52:50,968 INFO L82 PathProgramCache]: Analyzing trace with hash -699703104, now seen corresponding path program 24 times [2020-11-09 14:52:50,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 14:52:50,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972959409] [2020-11-09 14:52:50,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 14:52:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 14:52:51,022 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 14:52:51,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972959409] [2020-11-09 14:52:51,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277793413] [2020-11-09 14:52:51,023 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 14:52:51,095 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-11-09 14:52:51,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-09 14:52:51,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-09 14:52:51,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-09 14:52:51,121 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 14:52:51,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-09 14:52:51,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2020-11-09 14:52:51,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [860261148] [2020-11-09 14:52:51,121 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 14:52:51,123 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 14:52:51,127 INFO L252 McrAutomatonBuilder]: Finished intersection with 26 states and 31 transitions. [2020-11-09 14:52:51,128 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 14:52:51,162 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 14:52:51,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-09 14:52:51,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 14:52:51,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-09 14:52:51,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-11-09 14:52:51,163 INFO L87 Difference]: Start difference. First operand 36 states and 65 transitions. Second operand 8 states. [2020-11-09 14:52:51,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 14:52:51,175 INFO L93 Difference]: Finished difference Result 56 states and 79 transitions. [2020-11-09 14:52:51,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-09 14:52:51,176 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-11-09 14:52:51,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 14:52:51,176 INFO L225 Difference]: With dead ends: 56 [2020-11-09 14:52:51,176 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 14:52:51,176 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 14:52:51,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 14:52:51,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 14:52:51,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 14:52:51,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 14:52:51,177 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-09 14:52:51,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 14:52:51,177 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 14:52:51,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-09 14:52:51,178 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 14:52:51,178 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 14:52:51,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-09 14:52:51,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 02:52:51 BasicIcfg [2020-11-09 14:52:51,385 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 14:52:51,386 INFO L168 Benchmark]: Toolchain (without parser) took 23683.75 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 124.7 MB in the beginning and 238.6 MB in the end (delta: -114.0 MB). Peak memory consumption was 50.6 MB. Max. memory is 8.0 GB. [2020-11-09 14:52:51,386 INFO L168 Benchmark]: CDTParser took 0.80 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 14:52:51,387 INFO L168 Benchmark]: CACSL2BoogieTranslator took 724.14 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 95.3 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2020-11-09 14:52:51,387 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.15 ms. Allocated memory is still 151.0 MB. Free memory was 95.3 MB in the beginning and 93.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 14:52:51,388 INFO L168 Benchmark]: Boogie Preprocessor took 33.92 ms. Allocated memory is still 151.0 MB. Free memory was 93.6 MB in the beginning and 92.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 14:52:51,389 INFO L168 Benchmark]: RCFGBuilder took 664.03 ms. Allocated memory is still 151.0 MB. Free memory was 92.2 MB in the beginning and 71.7 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-11-09 14:52:51,389 INFO L168 Benchmark]: TraceAbstraction took 22192.33 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 71.7 MB in the beginning and 238.6 MB in the end (delta: -167.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 14:52:51,392 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.80 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 724.14 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 95.3 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 57.15 ms. Allocated memory is still 151.0 MB. Free memory was 95.3 MB in the beginning and 93.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.92 ms. Allocated memory is still 151.0 MB. Free memory was 93.6 MB in the beginning and 92.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 664.03 ms. Allocated memory is still 151.0 MB. Free memory was 92.2 MB in the beginning and 71.7 MB in the end (delta: 20.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 22192.33 ms. Allocated memory was 151.0 MB in the beginning and 314.6 MB in the end (delta: 163.6 MB). Free memory was 71.7 MB in the beginning and 238.6 MB in the end (delta: -167.0 MB). There was no memory consumed. 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: 4.6s, 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: 22.0s, OverallIterations: 26, TraceHistogramMax: 6, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 396 SDtfs, 1107 SDslu, 1236 SDs, 0 SdLazy, 1256 SolverSat, 687 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 908 GetRequests, 395 SyntacticMatches, 31 SemanticMatches, 482 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2407 ImplicationChecksByTransitivity, 6.0s 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, 3.0s 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...