/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/concurrent/pthreads/distributed_search2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-18 03:02:21,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-18 03:02:21,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-18 03:02:21,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-18 03:02:21,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-18 03:02:21,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-18 03:02:21,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-18 03:02:21,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-18 03:02:21,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-18 03:02:21,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-18 03:02:21,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-18 03:02:21,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-18 03:02:21,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-18 03:02:21,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-18 03:02:21,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-18 03:02:21,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-18 03:02:21,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-18 03:02:21,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-18 03:02:21,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-18 03:02:21,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-18 03:02:21,292 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-18 03:02:21,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-18 03:02:21,295 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-18 03:02:21,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-18 03:02:21,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-18 03:02:21,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-18 03:02:21,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-18 03:02:21,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-18 03:02:21,309 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 [2020-09-18 03:02:21,333 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-18 03:02:21,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-18 03:02:21,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-18 03:02:21,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-18 03:02:21,335 INFO L138 SettingsManager]: * Use SBE=true [2020-09-18 03:02:21,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-18 03:02:21,336 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-18 03:02:21,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-18 03:02:21,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-18 03:02:21,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-18 03:02:21,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-18 03:02:21,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-18 03:02:21,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-18 03:02:21,337 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-18 03:02:21,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-18 03:02:21,338 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-18 03:02:21,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-18 03:02:21,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-18 03:02:21,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-18 03:02:21,338 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-18 03:02:21,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-18 03:02:21,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 03:02:21,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-18 03:02:21,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-18 03:02:21,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-18 03:02:21,340 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-18 03:02:21,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-18 03:02:21,340 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-18 03:02:21,340 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-18 03:02:21,341 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-18 03:02:21,341 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-18 03:02:21,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-18 03:02:21,774 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-18 03:02:21,782 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-18 03:02:21,784 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-18 03:02:21,785 INFO L275 PluginConnector]: CDTParser initialized [2020-09-18 03:02:21,787 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/distributed_search2.c [2020-09-18 03:02:21,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0907f3508/935c6dd5f546452681d0329b6d7f05f7/FLAG154001568 [2020-09-18 03:02:22,464 INFO L306 CDTParser]: Found 1 translation units. [2020-09-18 03:02:22,465 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/distributed_search2.c [2020-09-18 03:02:22,466 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-09-18 03:02:22,466 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-09-18 03:02:22,525 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0907f3508/935c6dd5f546452681d0329b6d7f05f7/FLAG154001568 [2020-09-18 03:02:22,746 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0907f3508/935c6dd5f546452681d0329b6d7f05f7 [2020-09-18 03:02:22,758 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-18 03:02:22,764 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-18 03:02:22,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-18 03:02:22,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-18 03:02:22,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-18 03:02:22,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 03:02:22" (1/1) ... [2020-09-18 03:02:22,775 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d9e9f3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:02:22, skipping insertion in model container [2020-09-18 03:02:22,775 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 03:02:22" (1/1) ... [2020-09-18 03:02:22,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-18 03:02:22,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-18 03:02:23,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 03:02:23,148 INFO L203 MainTranslator]: Completed pre-run [2020-09-18 03:02:23,177 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 03:02:23,194 INFO L208 MainTranslator]: Completed translation [2020-09-18 03:02:23,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:02:23 WrapperNode [2020-09-18 03:02:23,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-18 03:02:23,196 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-18 03:02:23,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-18 03:02:23,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-18 03:02:23,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:02:23" (1/1) ... [2020-09-18 03:02:23,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:02:23" (1/1) ... [2020-09-18 03:02:23,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-18 03:02:23,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-18 03:02:23,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-18 03:02:23,246 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-18 03:02:23,256 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:02:23" (1/1) ... [2020-09-18 03:02:23,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:02:23" (1/1) ... [2020-09-18 03:02:23,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:02:23" (1/1) ... [2020-09-18 03:02:23,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:02:23" (1/1) ... [2020-09-18 03:02:23,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:02:23" (1/1) ... [2020-09-18 03:02:23,273 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:02:23" (1/1) ... [2020-09-18 03:02:23,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:02:23" (1/1) ... [2020-09-18 03:02:23,279 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-18 03:02:23,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-18 03:02:23,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-18 03:02:23,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-18 03:02:23,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:02:23" (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 [2020-09-18 03:02:23,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-18 03:02:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure search_worker [2020-09-18 03:02:23,363 INFO L138 BoogieDeclarations]: Found implementation of procedure search_worker [2020-09-18 03:02:23,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-18 03:02:23,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-18 03:02:23,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-18 03:02:23,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-18 03:02:23,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-18 03:02:23,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-18 03:02:23,367 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-18 03:02:23,820 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-18 03:02:23,821 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-09-18 03:02:23,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:02:23 BoogieIcfgContainer [2020-09-18 03:02:23,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-18 03:02:23,828 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-18 03:02:23,828 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-18 03:02:23,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-18 03:02:23,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 03:02:22" (1/3) ... [2020-09-18 03:02:23,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b54d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 03:02:23, skipping insertion in model container [2020-09-18 03:02:23,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 03:02:23" (2/3) ... [2020-09-18 03:02:23,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18b54d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 03:02:23, skipping insertion in model container [2020-09-18 03:02:23,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 03:02:23" (3/3) ... [2020-09-18 03:02:23,836 INFO L109 eAbstractionObserver]: Analyzing ICFG distributed_search2.c [2020-09-18 03:02:23,848 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-18 03:02:23,848 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-18 03:02:23,858 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-18 03:02:23,860 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-18 03:02:23,899 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#in~params.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,899 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#in~params.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,900 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,900 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,900 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,900 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,901 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,901 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,901 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,901 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,901 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,902 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,902 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,902 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,903 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,903 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,903 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,903 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,904 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,904 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,904 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,904 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,905 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,905 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,905 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,905 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,906 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,906 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,906 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,906 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,907 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,907 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,907 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,908 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,908 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,908 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,908 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,909 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,909 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,909 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,910 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#in~params.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,910 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#in~params.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,910 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,910 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,911 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,911 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,911 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,911 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,912 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,912 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,912 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,913 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,913 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,913 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,913 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,914 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,914 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,914 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,914 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,915 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,915 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,915 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,915 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,916 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,916 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,916 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,916 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,917 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,917 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,917 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,917 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,918 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,918 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,918 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,919 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,919 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,919 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,919 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,920 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,920 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,924 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,925 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,925 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,925 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,926 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,926 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,926 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,926 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,927 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,927 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,927 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,927 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,928 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,936 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,936 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,936 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,937 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,937 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,937 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,937 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,938 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,938 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,938 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,938 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,939 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,939 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 03:02:23,972 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-09-18 03:02:23,999 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 03:02:24,000 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 03:02:24,000 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 03:02:24,000 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 03:02:24,000 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 03:02:24,000 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 03:02:24,001 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 03:02:24,001 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 03:02:24,020 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 138 transitions, 298 flow [2020-09-18 03:02:24,022 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 135 places, 138 transitions, 298 flow [2020-09-18 03:02:24,129 INFO L129 PetriNetUnfolder]: 9/138 cut-off events. [2020-09-18 03:02:24,130 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-09-18 03:02:24,140 INFO L80 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 138 events. 9/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 159 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 71. Up to 3 conditions per place. [2020-09-18 03:02:24,148 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 135 places, 138 transitions, 298 flow [2020-09-18 03:02:24,186 INFO L129 PetriNetUnfolder]: 9/138 cut-off events. [2020-09-18 03:02:24,187 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-09-18 03:02:24,188 INFO L80 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 138 events. 9/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 159 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 71. Up to 3 conditions per place. [2020-09-18 03:02:24,190 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1920 [2020-09-18 03:02:24,191 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 03:02:26,534 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-09-18 03:02:26,651 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-09-18 03:02:27,067 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-09-18 03:02:27,474 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-09-18 03:02:27,484 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 11, 1] term [2020-09-18 03:02:27,484 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-18 03:02:27,485 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-18 03:02:27,491 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-09-18 03:02:27,595 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-09-18 03:02:28,106 WARN L193 SmtUtils]: Spent 507.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 119 [2020-09-18 03:02:28,324 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-09-18 03:02:28,595 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-09-18 03:02:28,872 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-09-18 03:02:28,883 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2754 [2020-09-18 03:02:28,883 INFO L214 etLargeBlockEncoding]: Total number of compositions: 121 [2020-09-18 03:02:28,888 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 30 transitions, 82 flow [2020-09-18 03:02:28,912 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 126 states. [2020-09-18 03:02:28,915 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states. [2020-09-18 03:02:28,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-18 03:02:28,948 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 03:02:28,949 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 03:02:28,950 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-09-18 03:02:28,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 03:02:28,960 INFO L82 PathProgramCache]: Analyzing trace with hash -878946956, now seen corresponding path program 1 times [2020-09-18 03:02:28,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 03:02:28,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874308245] [2020-09-18 03:02:28,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 03:02:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 03:02:29,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 03:02:29,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874308245] [2020-09-18 03:02:29,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 03:02:29,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-18 03:02:29,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [984996755] [2020-09-18 03:02:29,241 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 03:02:29,247 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 03:02:29,279 INFO L274 McrAutomatonBuilder]: Finished intersection with 46 states and 80 transitions. [2020-09-18 03:02:29,279 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 03:02:29,513 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 03:02:29,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-18 03:02:29,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 03:02:29,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-18 03:02:29,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-18 03:02:29,536 INFO L87 Difference]: Start difference. First operand 126 states. Second operand 5 states. [2020-09-18 03:02:29,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 03:02:29,638 INFO L93 Difference]: Finished difference Result 126 states and 313 transitions. [2020-09-18 03:02:29,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 03:02:29,640 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-18 03:02:29,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 03:02:29,654 INFO L225 Difference]: With dead ends: 126 [2020-09-18 03:02:29,655 INFO L226 Difference]: Without dead ends: 104 [2020-09-18 03:02:29,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-18 03:02:29,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-18 03:02:29,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-09-18 03:02:29,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-18 03:02:29,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 267 transitions. [2020-09-18 03:02:29,709 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 267 transitions. Word has length 16 [2020-09-18 03:02:29,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 03:02:29,710 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 267 transitions. [2020-09-18 03:02:29,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-18 03:02:29,711 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 267 transitions. [2020-09-18 03:02:29,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-18 03:02:29,713 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 03:02:29,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 03:02:29,714 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-18 03:02:29,714 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-09-18 03:02:29,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 03:02:29,715 INFO L82 PathProgramCache]: Analyzing trace with hash 351436872, now seen corresponding path program 1 times [2020-09-18 03:02:29,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 03:02:29,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050027783] [2020-09-18 03:02:29,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 03:02:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 03:02:29,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 03:02:29,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050027783] [2020-09-18 03:02:29,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 03:02:29,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 03:02:29,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [526116927] [2020-09-18 03:02:29,850 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 03:02:29,853 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 03:02:29,862 INFO L274 McrAutomatonBuilder]: Finished intersection with 43 states and 74 transitions. [2020-09-18 03:02:29,863 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 03:02:29,978 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 03:02:29,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 03:02:29,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 03:02:29,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 03:02:29,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 03:02:29,980 INFO L87 Difference]: Start difference. First operand 104 states and 267 transitions. Second operand 3 states. [2020-09-18 03:02:30,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 03:02:30,012 INFO L93 Difference]: Finished difference Result 170 states and 444 transitions. [2020-09-18 03:02:30,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 03:02:30,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-09-18 03:02:30,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 03:02:30,015 INFO L225 Difference]: With dead ends: 170 [2020-09-18 03:02:30,016 INFO L226 Difference]: Without dead ends: 163 [2020-09-18 03:02:30,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 03:02:30,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-09-18 03:02:30,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 140. [2020-09-18 03:02:30,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-18 03:02:30,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 372 transitions. [2020-09-18 03:02:30,033 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 372 transitions. Word has length 16 [2020-09-18 03:02:30,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 03:02:30,034 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 372 transitions. [2020-09-18 03:02:30,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 03:02:30,034 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 372 transitions. [2020-09-18 03:02:30,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-18 03:02:30,036 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 03:02:30,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 03:02:30,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-18 03:02:30,037 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-09-18 03:02:30,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 03:02:30,037 INFO L82 PathProgramCache]: Analyzing trace with hash 443469900, now seen corresponding path program 1 times [2020-09-18 03:02:30,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 03:02:30,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962725994] [2020-09-18 03:02:30,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 03:02:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 03:02:30,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 03:02:30,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962725994] [2020-09-18 03:02:30,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424017075] [2020-09-18 03:02:30,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-09-18 03:02:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 03:02:30,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 29 conjunts are in the unsatisfiable core [2020-09-18 03:02:30,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 03:02:30,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 03:02:30,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-18 03:02:30,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2020-09-18 03:02:30,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [650574945] [2020-09-18 03:02:30,487 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 03:02:30,491 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 03:02:30,507 INFO L274 McrAutomatonBuilder]: Finished intersection with 60 states and 111 transitions. [2020-09-18 03:02:30,507 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 03:02:30,682 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-09-18 03:02:30,718 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-09-18 03:02:30,725 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-09-18 03:02:30,737 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-09-18 03:02:30,904 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 2 new interpolants: [1248#(or (and (= |ULTIMATE.start_main_~#haystack~0.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#haystack~0.base|) (* search_workerThread1of1ForFork1_~i~0 4)) ULTIMATE.start_main_~needle~0)) (not (= ~search_needle~0 (select (select |#memory_int| ~search_haystack~0.base) (+ ~search_haystack~0.offset (* search_workerThread1of1ForFork1_~i~0 4)))))), 1249#(or (not (= ~search_needle~0 (select (select |#memory_int| ~search_haystack~0.base) (+ ~search_haystack~0.offset (* search_workerThread1of1ForFork1_~i~0 4))))) (= ULTIMATE.start_main_~needle~0 (select (select |#memory_int| |ULTIMATE.start_main_~#haystack~0.base|) (+ |ULTIMATE.start_main_~#haystack~0.offset| (* search_workerThread1of1ForFork1_~i~0 4)))))] [2020-09-18 03:02:30,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-18 03:02:30,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 03:02:30,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-18 03:02:30,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-18 03:02:30,905 INFO L87 Difference]: Start difference. First operand 140 states and 372 transitions. Second operand 10 states. [2020-09-18 03:02:31,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 03:02:31,080 INFO L93 Difference]: Finished difference Result 202 states and 539 transitions. [2020-09-18 03:02:31,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-18 03:02:31,081 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-09-18 03:02:31,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 03:02:31,083 INFO L225 Difference]: With dead ends: 202 [2020-09-18 03:02:31,083 INFO L226 Difference]: Without dead ends: 158 [2020-09-18 03:02:31,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 79 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-09-18 03:02:31,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-18 03:02:31,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 110. [2020-09-18 03:02:31,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-18 03:02:31,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 290 transitions. [2020-09-18 03:02:31,094 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 290 transitions. Word has length 19 [2020-09-18 03:02:31,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 03:02:31,094 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 290 transitions. [2020-09-18 03:02:31,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-18 03:02:31,095 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 290 transitions. [2020-09-18 03:02:31,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-18 03:02:31,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 03:02:31,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 03:02:31,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-09-18 03:02:31,312 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-09-18 03:02:31,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 03:02:31,312 INFO L82 PathProgramCache]: Analyzing trace with hash -799546606, now seen corresponding path program 1 times [2020-09-18 03:02:31,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 03:02:31,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657713239] [2020-09-18 03:02:31,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 03:02:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 03:02:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 03:02:31,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657713239] [2020-09-18 03:02:31,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 03:02:31,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-18 03:02:31,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2018878626] [2020-09-18 03:02:31,951 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 03:02:31,955 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 03:02:31,963 INFO L274 McrAutomatonBuilder]: Finished intersection with 50 states and 86 transitions. [2020-09-18 03:02:31,963 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 03:02:32,634 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 9 new interpolants: [1696#(and (or (not (= (mod ~search_found~0 256) 0)) (<= (select (select |#memory_int| search_workerThread1of1ForFork0_~bounds~0.base) (+ search_workerThread1of1ForFork0_~bounds~0.offset 4)) search_workerThread1of1ForFork0_~lower~0) (and (= (mod ~search_found~0 256) 0) (< (select (select |#memory_int| |ULTIMATE.start_search_~#bounds2~0.base|) |ULTIMATE.start_search_~#bounds2~0.offset|) (select (select |#memory_int| |ULTIMATE.start_search_~#bounds2~0.base|) (+ |ULTIMATE.start_search_~#bounds2~0.offset| 4))))) (or (= search_workerThread1of1ForFork0_~lower~0 0) (and (= (mod ~search_found~0 256) 0) (< (select (select |#memory_int| |ULTIMATE.start_search_~#bounds2~0.base|) |ULTIMATE.start_search_~#bounds2~0.offset|) (select (select |#memory_int| |ULTIMATE.start_search_~#bounds2~0.base|) (+ |ULTIMATE.start_search_~#bounds2~0.offset| 4)))))), 1688#(and (= (mod ~search_found~0 256) 0) (< search_workerThread1of1ForFork1_~i~0 search_workerThread1of1ForFork1_~upper~0)), 1689#(and (= (mod ~search_found~0 256) 0) (< (select (select |#memory_int| |search_workerThread1of1ForFork1_#in~params.base|) |search_workerThread1of1ForFork1_#in~params.offset|) (select (select |#memory_int| |search_workerThread1of1ForFork1_#in~params.base|) (+ |search_workerThread1of1ForFork1_#in~params.offset| 4)))), 1690#(and (or (not (= (mod ~search_found~0 256) 0)) (and (= (mod ~search_found~0 256) 0) (< search_workerThread1of1ForFork1_~i~0 search_workerThread1of1ForFork1_~upper~0)) (<= search_workerThread1of1ForFork0_~upper~0 search_workerThread1of1ForFork0_~i~0)) (or (and (= (mod ~search_found~0 256) 0) (< search_workerThread1of1ForFork1_~i~0 search_workerThread1of1ForFork1_~upper~0)) (= search_workerThread1of1ForFork0_~i~0 0))), 1691#(and (or (not (= (mod ~search_found~0 256) 0)) (<= (select (select |#memory_int| search_workerThread1of1ForFork0_~bounds~0.base) (+ search_workerThread1of1ForFork0_~bounds~0.offset 4)) search_workerThread1of1ForFork0_~lower~0) (and (= (mod ~search_found~0 256) 0) (< search_workerThread1of1ForFork1_~i~0 search_workerThread1of1ForFork1_~upper~0))) (or (= search_workerThread1of1ForFork0_~lower~0 0) (and (= (mod ~search_found~0 256) 0) (< search_workerThread1of1ForFork1_~i~0 search_workerThread1of1ForFork1_~upper~0)))), 1692#(and (or (not (= (mod ~search_found~0 256) 0)) (<= search_workerThread1of1ForFork0_~upper~0 search_workerThread1of1ForFork0_~i~0) (and (= (mod ~search_found~0 256) 0) (< (select (select |#memory_int| |search_workerThread1of1ForFork1_#in~params.base|) |search_workerThread1of1ForFork1_#in~params.offset|) (select (select |#memory_int| |search_workerThread1of1ForFork1_#in~params.base|) (+ |search_workerThread1of1ForFork1_#in~params.offset| 4))))) (or (= search_workerThread1of1ForFork0_~i~0 0) (and (= (mod ~search_found~0 256) 0) (< (select (select |#memory_int| |search_workerThread1of1ForFork1_#in~params.base|) |search_workerThread1of1ForFork1_#in~params.offset|) (select (select |#memory_int| |search_workerThread1of1ForFork1_#in~params.base|) (+ |search_workerThread1of1ForFork1_#in~params.offset| 4)))))), 1693#(and (or (= search_workerThread1of1ForFork0_~lower~0 0) (and (= (mod ~search_found~0 256) 0) (< (select (select |#memory_int| |search_workerThread1of1ForFork1_#in~params.base|) |search_workerThread1of1ForFork1_#in~params.offset|) (select (select |#memory_int| |search_workerThread1of1ForFork1_#in~params.base|) (+ |search_workerThread1of1ForFork1_#in~params.offset| 4))))) (or (not (= (mod ~search_found~0 256) 0)) (<= (select (select |#memory_int| search_workerThread1of1ForFork0_~bounds~0.base) (+ search_workerThread1of1ForFork0_~bounds~0.offset 4)) search_workerThread1of1ForFork0_~lower~0) (and (= (mod ~search_found~0 256) 0) (< (select (select |#memory_int| |search_workerThread1of1ForFork1_#in~params.base|) |search_workerThread1of1ForFork1_#in~params.offset|) (select (select |#memory_int| |search_workerThread1of1ForFork1_#in~params.base|) (+ |search_workerThread1of1ForFork1_#in~params.offset| 4)))))), 1694#(and (= (mod ~search_found~0 256) 0) (< (select (select |#memory_int| |ULTIMATE.start_search_~#bounds2~0.base|) |ULTIMATE.start_search_~#bounds2~0.offset|) (select (select |#memory_int| |ULTIMATE.start_search_~#bounds2~0.base|) (+ |ULTIMATE.start_search_~#bounds2~0.offset| 4)))), 1695#(and (or (not (= (mod ~search_found~0 256) 0)) (<= search_workerThread1of1ForFork0_~upper~0 search_workerThread1of1ForFork0_~i~0) (and (= (mod ~search_found~0 256) 0) (< (select (select |#memory_int| |ULTIMATE.start_search_~#bounds2~0.base|) |ULTIMATE.start_search_~#bounds2~0.offset|) (select (select |#memory_int| |ULTIMATE.start_search_~#bounds2~0.base|) (+ |ULTIMATE.start_search_~#bounds2~0.offset| 4))))) (or (= search_workerThread1of1ForFork0_~i~0 0) (and (= (mod ~search_found~0 256) 0) (< (select (select |#memory_int| |ULTIMATE.start_search_~#bounds2~0.base|) |ULTIMATE.start_search_~#bounds2~0.offset|) (select (select |#memory_int| |ULTIMATE.start_search_~#bounds2~0.base|) (+ |ULTIMATE.start_search_~#bounds2~0.offset| 4))))))] [2020-09-18 03:02:32,634 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-18 03:02:32,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 03:02:32,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-18 03:02:32,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2020-09-18 03:02:32,636 INFO L87 Difference]: Start difference. First operand 110 states and 290 transitions. Second operand 19 states. [2020-09-18 03:02:33,069 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-09-18 03:02:33,244 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-09-18 03:02:33,487 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-09-18 03:02:33,737 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-09-18 03:02:33,970 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-09-18 03:02:34,377 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2020-09-18 03:02:34,600 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-18 03:02:34,922 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-09-18 03:02:35,277 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-09-18 03:02:35,635 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-09-18 03:02:36,159 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 104 [2020-09-18 03:02:36,402 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-09-18 03:02:36,869 WARN L193 SmtUtils]: Spent 344.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-09-18 03:02:37,087 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-09-18 03:02:37,447 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-09-18 03:02:37,887 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-09-18 03:02:38,591 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 112 [2020-09-18 03:02:38,862 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-09-18 03:02:39,294 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-09-18 03:02:39,779 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-18 03:02:40,345 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 107 [2020-09-18 03:02:40,636 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 67 [2020-09-18 03:02:41,117 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-18 03:02:41,307 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-09-18 03:02:41,612 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 75 [2020-09-18 03:02:42,170 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2020-09-18 03:02:42,507 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2020-09-18 03:02:43,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 03:02:43,005 INFO L93 Difference]: Finished difference Result 326 states and 898 transitions. [2020-09-18 03:02:43,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-09-18 03:02:43,005 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 20 [2020-09-18 03:02:43,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 03:02:43,009 INFO L225 Difference]: With dead ends: 326 [2020-09-18 03:02:43,009 INFO L226 Difference]: Without dead ends: 290 [2020-09-18 03:02:43,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 17 SyntacticMatches, 5 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=635, Invalid=2121, Unknown=0, NotChecked=0, Total=2756 [2020-09-18 03:02:43,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-09-18 03:02:43,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 130. [2020-09-18 03:02:43,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-09-18 03:02:43,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 351 transitions. [2020-09-18 03:02:43,033 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 351 transitions. Word has length 20 [2020-09-18 03:02:43,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 03:02:43,035 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 351 transitions. [2020-09-18 03:02:43,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-18 03:02:43,035 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 351 transitions. [2020-09-18 03:02:43,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-18 03:02:43,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 03:02:43,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 03:02:43,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-18 03:02:43,038 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-09-18 03:02:43,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 03:02:43,038 INFO L82 PathProgramCache]: Analyzing trace with hash -598861718, now seen corresponding path program 2 times [2020-09-18 03:02:43,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 03:02:43,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37751765] [2020-09-18 03:02:43,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 03:02:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 03:02:43,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 03:02:43,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37751765] [2020-09-18 03:02:43,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [324332180] [2020-09-18 03:02:43,329 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 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 [2020-09-18 03:02:43,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-18 03:02:43,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-18 03:02:43,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 70 conjunts are in the unsatisfiable core [2020-09-18 03:02:43,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 03:02:43,460 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2020-09-18 03:02:43,462 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-09-18 03:02:43,523 INFO L625 ElimStorePlain]: treesize reduction 22, result has 67.6 percent of original size [2020-09-18 03:02:43,535 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-09-18 03:02:43,536 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:43,560 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-18 03:02:43,562 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-09-18 03:02:43,562 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:51, output treesize:42 [2020-09-18 03:02:43,699 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-09-18 03:02:43,700 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 52 [2020-09-18 03:02:43,701 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:43,780 INFO L625 ElimStorePlain]: treesize reduction 16, result has 78.9 percent of original size [2020-09-18 03:02:43,784 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-09-18 03:02:43,787 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-09-18 03:02:43,787 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:56, output treesize:60 [2020-09-18 03:02:43,792 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-09-18 03:02:43,858 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-09-18 03:02:44,545 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2020-09-18 03:02:44,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 03:02:44,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-18 03:02:44,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 16 [2020-09-18 03:02:44,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [424273909] [2020-09-18 03:02:44,859 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 03:02:44,863 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 03:02:44,874 INFO L274 McrAutomatonBuilder]: Finished intersection with 61 states and 109 transitions. [2020-09-18 03:02:44,874 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 03:02:45,134 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 03:02:45,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-18 03:02:45,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 03:02:45,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-18 03:02:45,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-09-18 03:02:45,136 INFO L87 Difference]: Start difference. First operand 130 states and 351 transitions. Second operand 18 states. [2020-09-18 03:02:46,317 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-09-18 03:02:46,690 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-09-18 03:02:46,908 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-09-18 03:02:47,080 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-09-18 03:02:47,281 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-09-18 03:02:47,504 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-09-18 03:02:47,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 03:02:47,748 INFO L93 Difference]: Finished difference Result 282 states and 767 transitions. [2020-09-18 03:02:47,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-18 03:02:47,748 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 20 [2020-09-18 03:02:47,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 03:02:47,751 INFO L225 Difference]: With dead ends: 282 [2020-09-18 03:02:47,751 INFO L226 Difference]: Without dead ends: 264 [2020-09-18 03:02:47,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=244, Invalid=878, Unknown=0, NotChecked=0, Total=1122 [2020-09-18 03:02:47,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-09-18 03:02:47,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 191. [2020-09-18 03:02:47,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-09-18 03:02:47,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 530 transitions. [2020-09-18 03:02:47,762 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 530 transitions. Word has length 20 [2020-09-18 03:02:47,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 03:02:47,762 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 530 transitions. [2020-09-18 03:02:47,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-18 03:02:47,762 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 530 transitions. [2020-09-18 03:02:47,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-18 03:02:47,764 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 03:02:47,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 03:02:47,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 03:02:47,978 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-09-18 03:02:47,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 03:02:47,979 INFO L82 PathProgramCache]: Analyzing trace with hash -2064989212, now seen corresponding path program 3 times [2020-09-18 03:02:47,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 03:02:47,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001067670] [2020-09-18 03:02:47,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 03:02:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 03:02:48,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 03:02:48,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001067670] [2020-09-18 03:02:48,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246877337] [2020-09-18 03:02:48,258 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 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 [2020-09-18 03:02:48,334 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-09-18 03:02:48,334 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-18 03:02:48,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 33 conjunts are in the unsatisfiable core [2020-09-18 03:02:48,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 03:02:48,346 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 64 [2020-09-18 03:02:48,351 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:48,379 INFO L625 ElimStorePlain]: treesize reduction 42, result has 30.0 percent of original size [2020-09-18 03:02:48,380 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-09-18 03:02:48,381 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:14 [2020-09-18 03:02:48,423 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-09-18 03:02:48,424 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:48,435 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-18 03:02:48,436 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-09-18 03:02:48,436 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:23 [2020-09-18 03:02:48,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 03:02:48,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-18 03:02:48,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 11 [2020-09-18 03:02:48,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2119136039] [2020-09-18 03:02:48,520 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 03:02:48,524 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 03:02:48,532 INFO L274 McrAutomatonBuilder]: Finished intersection with 48 states and 79 transitions. [2020-09-18 03:02:48,532 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 03:02:48,580 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-09-18 03:02:48,584 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 03:02:48,601 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-09-18 03:02:48,602 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:48,608 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-09-18 03:02:48,610 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:48,625 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-09-18 03:02:48,627 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:48,634 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-09-18 03:02:48,636 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:48,642 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-09-18 03:02:48,644 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:48,650 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-09-18 03:02:48,653 INFO L545 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:48,659 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-09-18 03:02:48,665 INFO L545 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:48,673 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-09-18 03:02:48,675 INFO L545 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:48,681 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-09-18 03:02:48,682 INFO L545 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:48,809 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-09-18 03:02:48,811 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-18 03:02:48,816 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 12 dim-0 vars, and 9 xjuncts. [2020-09-18 03:02:48,816 INFO L244 ElimStorePlain]: Needed 10 recursive calls to eliminate 3 variables, input treesize:388, output treesize:334 [2020-09-18 03:02:48,835 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-09-18 03:02:48,837 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 03:02:48,850 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-09-18 03:02:48,851 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:48,863 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-09-18 03:02:48,864 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:48,870 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-09-18 03:02:48,872 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:48,887 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-09-18 03:02:48,888 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:48,894 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-09-18 03:02:48,895 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:48,901 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-09-18 03:02:48,902 INFO L545 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:48,908 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-09-18 03:02:48,909 INFO L545 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:48,915 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-09-18 03:02:48,916 INFO L545 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:48,921 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-09-18 03:02:48,922 INFO L545 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:49,052 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-09-18 03:02:49,052 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-18 03:02:49,057 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 12 dim-0 vars, and 9 xjuncts. [2020-09-18 03:02:49,057 INFO L244 ElimStorePlain]: Needed 10 recursive calls to eliminate 3 variables, input treesize:388, output treesize:334 [2020-09-18 03:02:49,074 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-09-18 03:02:49,076 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 03:02:49,089 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-09-18 03:02:49,089 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:49,095 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-09-18 03:02:49,096 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:49,103 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-09-18 03:02:49,104 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:49,109 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-09-18 03:02:49,111 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:49,117 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-09-18 03:02:49,118 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:49,125 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-09-18 03:02:49,126 INFO L545 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:49,132 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-09-18 03:02:49,136 INFO L545 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:49,142 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-09-18 03:02:49,143 INFO L545 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:49,155 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-09-18 03:02:49,156 INFO L545 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:49,317 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-09-18 03:02:49,317 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-18 03:02:49,322 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 12 dim-0 vars, and 9 xjuncts. [2020-09-18 03:02:49,322 INFO L244 ElimStorePlain]: Needed 10 recursive calls to eliminate 3 variables, input treesize:388, output treesize:334 [2020-09-18 03:02:49,351 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 03:02:49,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-18 03:02:49,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 03:02:49,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-18 03:02:49,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-09-18 03:02:49,353 INFO L87 Difference]: Start difference. First operand 191 states and 530 transitions. Second operand 13 states. [2020-09-18 03:02:51,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 03:02:51,021 INFO L93 Difference]: Finished difference Result 529 states and 1451 transitions. [2020-09-18 03:02:51,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-18 03:02:51,022 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2020-09-18 03:02:51,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 03:02:51,028 INFO L225 Difference]: With dead ends: 529 [2020-09-18 03:02:51,028 INFO L226 Difference]: Without dead ends: 468 [2020-09-18 03:02:51,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=208, Invalid=784, Unknown=0, NotChecked=0, Total=992 [2020-09-18 03:02:51,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2020-09-18 03:02:51,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 231. [2020-09-18 03:02:51,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-09-18 03:02:51,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 644 transitions. [2020-09-18 03:02:51,047 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 644 transitions. Word has length 20 [2020-09-18 03:02:51,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 03:02:51,048 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 644 transitions. [2020-09-18 03:02:51,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-18 03:02:51,048 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 644 transitions. [2020-09-18 03:02:51,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-18 03:02:51,053 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 03:02:51,053 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 03:02:51,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 03:02:51,267 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-09-18 03:02:51,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 03:02:51,267 INFO L82 PathProgramCache]: Analyzing trace with hash 2072690650, now seen corresponding path program 1 times [2020-09-18 03:02:51,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 03:02:51,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107398562] [2020-09-18 03:02:51,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 03:02:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 03:02:51,582 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 03:02:51,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107398562] [2020-09-18 03:02:51,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160515721] [2020-09-18 03:02:51,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-09-18 03:02:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 03:02:51,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 70 conjunts are in the unsatisfiable core [2020-09-18 03:02:51,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 03:02:51,696 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 218 [2020-09-18 03:02:51,698 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-09-18 03:02:51,794 INFO L625 ElimStorePlain]: treesize reduction 184, result has 20.0 percent of original size [2020-09-18 03:02:51,803 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-09-18 03:02:51,804 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:51,826 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-18 03:02:51,827 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-09-18 03:02:51,827 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:51, output treesize:42 [2020-09-18 03:02:51,933 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-09-18 03:02:51,934 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 52 [2020-09-18 03:02:51,934 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-18 03:02:52,001 INFO L625 ElimStorePlain]: treesize reduction 16, result has 78.9 percent of original size [2020-09-18 03:02:52,004 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-09-18 03:02:52,005 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-09-18 03:02:52,006 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:56, output treesize:60 [2020-09-18 03:02:52,008 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-09-18 03:02:52,057 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-09-18 03:02:52,640 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2020-09-18 03:02:53,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 03:02:53,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-18 03:02:53,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 18 [2020-09-18 03:02:53,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [101024329] [2020-09-18 03:02:53,114 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 03:02:53,119 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 03:02:53,142 INFO L274 McrAutomatonBuilder]: Finished intersection with 71 states and 129 transitions. [2020-09-18 03:02:53,142 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 03:02:53,468 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 03:02:53,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-18 03:02:53,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 03:02:53,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-18 03:02:53,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-09-18 03:02:53,469 INFO L87 Difference]: Start difference. First operand 231 states and 644 transitions. Second operand 20 states. [2020-09-18 03:02:54,368 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-09-18 03:02:54,530 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-09-18 03:02:54,800 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-09-18 03:02:55,195 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-09-18 03:02:55,377 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-09-18 03:02:55,596 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-09-18 03:02:55,794 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-09-18 03:02:56,307 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-09-18 03:02:56,493 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-09-18 03:02:56,646 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-09-18 03:02:56,933 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-09-18 03:02:57,122 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-09-18 03:02:57,311 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-09-18 03:02:57,695 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-09-18 03:02:57,855 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-09-18 03:02:58,055 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-09-18 03:02:58,322 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-09-18 03:02:58,495 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-09-18 03:02:58,716 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-09-18 03:02:59,065 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-09-18 03:02:59,228 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-09-18 03:02:59,542 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-09-18 03:02:59,718 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-09-18 03:02:59,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 03:02:59,968 INFO L93 Difference]: Finished difference Result 618 states and 1733 transitions. [2020-09-18 03:02:59,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-09-18 03:02:59,968 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 22 [2020-09-18 03:02:59,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 03:02:59,969 INFO L225 Difference]: With dead ends: 618 [2020-09-18 03:02:59,970 INFO L226 Difference]: Without dead ends: 52 [2020-09-18 03:02:59,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 51 SyntacticMatches, 8 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 702 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=623, Invalid=2239, Unknown=0, NotChecked=0, Total=2862 [2020-09-18 03:02:59,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-18 03:02:59,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2020-09-18 03:02:59,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-18 03:02:59,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 93 transitions. [2020-09-18 03:02:59,973 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 93 transitions. Word has length 22 [2020-09-18 03:02:59,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 03:02:59,973 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 93 transitions. [2020-09-18 03:02:59,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-18 03:02:59,974 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 93 transitions. [2020-09-18 03:02:59,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-18 03:02:59,974 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 03:02:59,974 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 03:03:00,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 03:03:00,186 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-09-18 03:03:00,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 03:03:00,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1720059924, now seen corresponding path program 2 times [2020-09-18 03:03:00,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 03:03:00,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415086283] [2020-09-18 03:03:00,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 03:03:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 03:03:00,449 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 03:03:00,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415086283] [2020-09-18 03:03:00,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677319924] [2020-09-18 03:03:00,450 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 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 [2020-09-18 03:03:00,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-18 03:03:00,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-18 03:03:00,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 35 conjunts are in the unsatisfiable core [2020-09-18 03:03:00,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-18 03:03:00,549 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 43 [2020-09-18 03:03:00,550 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-18 03:03:00,596 INFO L625 ElimStorePlain]: treesize reduction 31, result has 48.3 percent of original size [2020-09-18 03:03:00,602 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-09-18 03:03:00,603 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-09-18 03:03:00,615 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-09-18 03:03:00,616 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-09-18 03:03:00,616 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:35, output treesize:25 [2020-09-18 03:03:00,743 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-09-18 03:03:00,743 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 48 [2020-09-18 03:03:00,744 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-09-18 03:03:00,777 INFO L625 ElimStorePlain]: treesize reduction 28, result has 54.8 percent of original size [2020-09-18 03:03:00,780 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-09-18 03:03:00,780 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:38, output treesize:34 [2020-09-18 03:03:00,883 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-18 03:03:00,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-18 03:03:00,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 12 [2020-09-18 03:03:00,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [100632042] [2020-09-18 03:03:00,885 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 03:03:00,891 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 03:03:00,903 INFO L274 McrAutomatonBuilder]: Finished intersection with 50 states and 81 transitions. [2020-09-18 03:03:00,904 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 03:03:01,063 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [5163#(and (= ULTIMATE.start_main_~needle~0 (select (select |#memory_int| |ULTIMATE.start_main_~#haystack~0.base|) (* search_workerThread1of1ForFork0_~i~0 4))) (= |ULTIMATE.start_main_~#haystack~0.offset| 0))] [2020-09-18 03:03:01,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-18 03:03:01,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 03:03:01,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-18 03:03:01,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-09-18 03:03:01,064 INFO L87 Difference]: Start difference. First operand 48 states and 93 transitions. Second operand 15 states. [2020-09-18 03:03:02,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 03:03:02,043 INFO L93 Difference]: Finished difference Result 51 states and 97 transitions. [2020-09-18 03:03:02,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-18 03:03:02,043 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2020-09-18 03:03:02,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 03:03:02,044 INFO L225 Difference]: With dead ends: 51 [2020-09-18 03:03:02,044 INFO L226 Difference]: Without dead ends: 0 [2020-09-18 03:03:02,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=134, Invalid=418, Unknown=0, NotChecked=0, Total=552 [2020-09-18 03:03:02,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-18 03:03:02,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-18 03:03:02,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-18 03:03:02,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-18 03:03:02,045 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-09-18 03:03:02,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 03:03:02,046 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-18 03:03:02,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-18 03:03:02,046 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-18 03:03:02,046 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-18 03:03:02,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-18 03:03:02,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 03:03:02 BasicIcfg [2020-09-18 03:03:02,253 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-18 03:03:02,254 INFO L168 Benchmark]: Toolchain (without parser) took 39495.07 ms. Allocated memory was 140.5 MB in the beginning and 457.7 MB in the end (delta: 317.2 MB). Free memory was 100.6 MB in the beginning and 360.9 MB in the end (delta: -260.2 MB). Peak memory consumption was 57.0 MB. Max. memory is 7.1 GB. [2020-09-18 03:03:02,254 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-09-18 03:03:02,255 INFO L168 Benchmark]: CACSL2BoogieTranslator took 429.97 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 100.0 MB in the beginning and 179.9 MB in the end (delta: -79.9 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2020-09-18 03:03:02,255 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.58 ms. Allocated memory is still 204.5 MB. Free memory was 179.9 MB in the beginning and 178.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-18 03:03:02,256 INFO L168 Benchmark]: Boogie Preprocessor took 33.61 ms. Allocated memory is still 204.5 MB. Free memory was 178.0 MB in the beginning and 176.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-18 03:03:02,256 INFO L168 Benchmark]: RCFGBuilder took 547.38 ms. Allocated memory is still 204.5 MB. Free memory was 176.7 MB in the beginning and 150.6 MB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. [2020-09-18 03:03:02,256 INFO L168 Benchmark]: TraceAbstraction took 38424.79 ms. Allocated memory was 204.5 MB in the beginning and 457.7 MB in the end (delta: 253.2 MB). Free memory was 150.0 MB in the beginning and 360.9 MB in the end (delta: -210.8 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2020-09-18 03:03:02,262 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 429.97 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 100.0 MB in the beginning and 179.9 MB in the end (delta: -79.9 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.58 ms. Allocated memory is still 204.5 MB. Free memory was 179.9 MB in the beginning and 178.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.61 ms. Allocated memory is still 204.5 MB. Free memory was 178.0 MB in the beginning and 176.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 547.38 ms. Allocated memory is still 204.5 MB. Free memory was 176.7 MB in the beginning and 150.6 MB in the end (delta: 26.0 MB). Peak memory consumption was 26.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 38424.79 ms. Allocated memory was 204.5 MB in the beginning and 457.7 MB in the end (delta: 253.2 MB). Free memory was 150.0 MB in the beginning and 360.9 MB in the end (delta: -210.8 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 4.8s, 135 ProgramPointsBefore, 31 ProgramPointsAfterwards, 138 TransitionsBefore, 30 TransitionsAfterwards, 1920 CoEnabledTransitionPairs, 8 FixpointIterations, 70 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 11 ConcurrentYvCompositions, 4 ChoiceCompositions, 1042 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2754 CheckedPairsTotal, 121 TotalNumberOfCompositions - PositiveResult [Line: 67]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 107 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 38.2s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 22.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.9s, HoareTripleCheckerStatistics: 270 SDtfs, 1213 SDslu, 1052 SDs, 0 SdLazy, 3335 SolverSat, 174 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 556 GetRequests, 332 SyntacticMatches, 20 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1494 ImplicationChecksByTransitivity, 20.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=231occurred in iteration=6, 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, 8 MinimizatonAttempts, 545 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.3s InterpolantComputationTime, 258 NumberOfCodeBlocks, 258 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 245 ConstructedInterpolants, 74 QuantifiedInterpolants, 103148 SizeOfPredicates, 96 NumberOfNonLiveVariables, 820 ConjunctsInSsa, 237 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 3/23 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...