/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.epf -i ../../../trunk/examples/concurrent/pthreads/distributed_search2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 12:21:12,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 12:21:12,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 12:21:12,894 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 12:21:12,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 12:21:12,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 12:21:12,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 12:21:12,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 12:21:12,912 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 12:21:12,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 12:21:12,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 12:21:12,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 12:21:12,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 12:21:12,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 12:21:12,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 12:21:12,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 12:21:12,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 12:21:12,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 12:21:12,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 12:21:12,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 12:21:12,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 12:21:12,939 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 12:21:12,940 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 12:21:12,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 12:21:12,955 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 12:21:12,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 12:21:12,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 12:21:12,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 12:21:12,966 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 12:21:12,969 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 12:21:12,969 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 12:21:12,970 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 12:21:12,970 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 12:21:12,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 12:21:12,971 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 12:21:12,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 12:21:12,974 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-16 12:21:13,008 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 12:21:13,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 12:21:13,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 12:21:13,010 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 12:21:13,010 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 12:21:13,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 12:21:13,010 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 12:21:13,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 12:21:13,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 12:21:13,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 12:21:13,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 12:21:13,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 12:21:13,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 12:21:13,012 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 12:21:13,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 12:21:13,012 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 12:21:13,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 12:21:13,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 12:21:13,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 12:21:13,013 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 12:21:13,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 12:21:13,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 12:21:13,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 12:21:13,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 12:21:13,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 12:21:13,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 12:21:13,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 12:21:13,014 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 12:21:13,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 12:21:13,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 12:21:13,338 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 12:21:13,342 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 12:21:13,343 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 12:21:13,343 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 12:21:13,344 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/distributed_search2.c [2020-10-16 12:21:13,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d3b8a54b/a2167d280b4849c4832da956474ad70b/FLAG9e7d8d598 [2020-10-16 12:21:13,857 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 12:21:13,857 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/concurrent/pthreads/distributed_search2.c [2020-10-16 12:21:13,858 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-16 12:21:13,858 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-16 12:21:13,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d3b8a54b/a2167d280b4849c4832da956474ad70b/FLAG9e7d8d598 [2020-10-16 12:21:14,203 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1d3b8a54b/a2167d280b4849c4832da956474ad70b [2020-10-16 12:21:14,214 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 12:21:14,216 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 12:21:14,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 12:21:14,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 12:21:14,221 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 12:21:14,222 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:21:14" (1/1) ... [2020-10-16 12:21:14,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6abca293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:14, skipping insertion in model container [2020-10-16 12:21:14,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:21:14" (1/1) ... [2020-10-16 12:21:14,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 12:21:14,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 12:21:14,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:21:14,523 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 12:21:14,569 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 12:21:14,584 INFO L208 MainTranslator]: Completed translation [2020-10-16 12:21:14,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:14 WrapperNode [2020-10-16 12:21:14,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 12:21:14,586 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 12:21:14,586 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 12:21:14,586 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 12:21:14,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:14" (1/1) ... [2020-10-16 12:21:14,601 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:14" (1/1) ... [2020-10-16 12:21:14,626 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 12:21:14,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 12:21:14,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 12:21:14,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 12:21:14,637 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:14" (1/1) ... [2020-10-16 12:21:14,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:14" (1/1) ... [2020-10-16 12:21:14,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:14" (1/1) ... [2020-10-16 12:21:14,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:14" (1/1) ... [2020-10-16 12:21:14,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:14" (1/1) ... [2020-10-16 12:21:14,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:14" (1/1) ... [2020-10-16 12:21:14,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:14" (1/1) ... [2020-10-16 12:21:14,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 12:21:14,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 12:21:14,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 12:21:14,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 12:21:14,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:21:14,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 12:21:14,722 INFO L130 BoogieDeclarations]: Found specification of procedure search_worker [2020-10-16 12:21:14,722 INFO L138 BoogieDeclarations]: Found implementation of procedure search_worker [2020-10-16 12:21:14,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 12:21:14,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 12:21:14,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-16 12:21:14,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-16 12:21:14,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 12:21:14,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 12:21:14,725 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 12:21:15,126 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 12:21:15,127 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-16 12:21:15,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:21:15 BoogieIcfgContainer [2020-10-16 12:21:15,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 12:21:15,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 12:21:15,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 12:21:15,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 12:21:15,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:21:14" (1/3) ... [2020-10-16 12:21:15,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3527b438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:21:15, skipping insertion in model container [2020-10-16 12:21:15,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:21:14" (2/3) ... [2020-10-16 12:21:15,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3527b438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:21:15, skipping insertion in model container [2020-10-16 12:21:15,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:21:15" (3/3) ... [2020-10-16 12:21:15,138 INFO L111 eAbstractionObserver]: Analyzing ICFG distributed_search2.c [2020-10-16 12:21:15,149 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 12:21:15,150 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 12:21:15,158 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 12:21:15,159 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 12:21:15,193 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#in~params.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,194 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#in~params.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,194 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,194 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,195 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,195 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,195 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,195 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,196 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,196 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,196 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,196 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,196 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,197 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,197 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,197 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,197 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,198 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,199 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,199 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,200 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,200 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,200 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,200 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,200 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,201 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,201 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,201 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,201 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,202 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,202 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,202 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,202 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,203 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,203 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,203 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,203 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,203 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,204 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,204 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,204 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#in~params.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,205 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#in~params.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,205 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,205 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,205 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,206 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,206 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,206 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,206 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,207 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,207 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,207 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,207 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,208 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,208 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,208 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,208 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,209 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,209 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,209 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,210 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,210 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,210 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,210 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,211 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,211 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,211 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,211 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,212 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,212 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,212 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,213 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,213 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,213 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,213 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,214 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,214 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,214 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,214 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,215 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,218 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,219 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,219 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,220 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,220 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,220 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,220 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,221 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,221 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,221 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,221 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,222 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,222 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,229 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,230 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,230 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,230 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,231 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,231 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,231 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,231 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,232 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,232 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,232 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,232 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,233 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 12:21:15,249 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-16 12:21:15,263 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 12:21:15,291 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 12:21:15,292 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 12:21:15,292 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 12:21:15,292 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 12:21:15,292 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 12:21:15,292 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 12:21:15,293 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 12:21:15,293 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 12:21:15,310 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 12:21:15,311 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 138 transitions, 298 flow [2020-10-16 12:21:15,314 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 138 transitions, 298 flow [2020-10-16 12:21:15,316 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 135 places, 138 transitions, 298 flow [2020-10-16 12:21:15,410 INFO L129 PetriNetUnfolder]: 9/138 cut-off events. [2020-10-16 12:21:15,410 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-16 12:21:15,423 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. [2020-10-16 12:21:15,430 INFO L117 LiptonReduction]: Number of co-enabled transitions 1920 [2020-10-16 12:21:17,489 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-16 12:21:17,611 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-16 12:21:18,359 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-16 12:21:18,367 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 11, 1] term [2020-10-16 12:21:18,368 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 12:21:18,371 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 12:21:18,375 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 12:21:18,929 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 119 [2020-10-16 12:21:19,139 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-16 12:21:19,387 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-16 12:21:19,639 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-16 12:21:19,648 INFO L132 LiptonReduction]: Checked pairs total: 4237 [2020-10-16 12:21:19,648 INFO L134 LiptonReduction]: Total number of compositions: 125 [2020-10-16 12:21:19,656 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 30 transitions, 82 flow [2020-10-16 12:21:19,674 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 126 states. [2020-10-16 12:21:19,676 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states. [2020-10-16 12:21:19,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 12:21:19,687 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:19,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:19,688 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:21:19,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:19,695 INFO L82 PathProgramCache]: Analyzing trace with hash -878946956, now seen corresponding path program 1 times [2020-10-16 12:21:19,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:19,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601892963] [2020-10-16 12:21:19,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:19,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:19,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:19,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601892963] [2020-10-16 12:21:19,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:19,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 12:21:19,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487360757] [2020-10-16 12:21:19,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 12:21:19,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:19,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 12:21:19,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 12:21:19,968 INFO L87 Difference]: Start difference. First operand 126 states. Second operand 5 states. [2020-10-16 12:21:20,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:20,137 INFO L93 Difference]: Finished difference Result 126 states and 313 transitions. [2020-10-16 12:21:20,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 12:21:20,139 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-16 12:21:20,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:20,152 INFO L225 Difference]: With dead ends: 126 [2020-10-16 12:21:20,153 INFO L226 Difference]: Without dead ends: 104 [2020-10-16 12:21:20,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 12:21:20,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-16 12:21:20,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-16 12:21:20,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-16 12:21:20,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 267 transitions. [2020-10-16 12:21:20,202 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 267 transitions. Word has length 16 [2020-10-16 12:21:20,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:20,203 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 267 transitions. [2020-10-16 12:21:20,204 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 12:21:20,204 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 267 transitions. [2020-10-16 12:21:20,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-16 12:21:20,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:20,206 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:20,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 12:21:20,207 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:21:20,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:20,207 INFO L82 PathProgramCache]: Analyzing trace with hash 351436872, now seen corresponding path program 1 times [2020-10-16 12:21:20,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:20,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740592011] [2020-10-16 12:21:20,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:20,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:20,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740592011] [2020-10-16 12:21:20,309 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:20,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 12:21:20,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861878365] [2020-10-16 12:21:20,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 12:21:20,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:20,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 12:21:20,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:21:20,312 INFO L87 Difference]: Start difference. First operand 104 states and 267 transitions. Second operand 3 states. [2020-10-16 12:21:20,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:20,350 INFO L93 Difference]: Finished difference Result 170 states and 444 transitions. [2020-10-16 12:21:20,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 12:21:20,350 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-16 12:21:20,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:20,354 INFO L225 Difference]: With dead ends: 170 [2020-10-16 12:21:20,354 INFO L226 Difference]: Without dead ends: 163 [2020-10-16 12:21:20,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 12:21:20,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-16 12:21:20,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 140. [2020-10-16 12:21:20,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-16 12:21:20,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 372 transitions. [2020-10-16 12:21:20,374 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 372 transitions. Word has length 16 [2020-10-16 12:21:20,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:20,375 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 372 transitions. [2020-10-16 12:21:20,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 12:21:20,375 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 372 transitions. [2020-10-16 12:21:20,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 12:21:20,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:20,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 12:21:20,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 12:21:20,377 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:21:20,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:20,378 INFO L82 PathProgramCache]: Analyzing trace with hash 443469900, now seen corresponding path program 1 times [2020-10-16 12:21:20,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:20,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098115723] [2020-10-16 12:21:20,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:20,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:20,633 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:20,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098115723] [2020-10-16 12:21:20,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312794983] [2020-10-16 12:21:20,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:21:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:20,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-16 12:21:20,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:21:20,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:20,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:21:20,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2020-10-16 12:21:20,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600986752] [2020-10-16 12:21:20,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 12:21:20,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:20,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 12:21:20,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-16 12:21:20,802 INFO L87 Difference]: Start difference. First operand 140 states and 372 transitions. Second operand 8 states. [2020-10-16 12:21:20,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:20,975 INFO L93 Difference]: Finished difference Result 202 states and 539 transitions. [2020-10-16 12:21:20,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 12:21:20,976 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-16 12:21:20,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:20,978 INFO L225 Difference]: With dead ends: 202 [2020-10-16 12:21:20,978 INFO L226 Difference]: Without dead ends: 158 [2020-10-16 12:21:20,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-16 12:21:20,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-16 12:21:20,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 110. [2020-10-16 12:21:20,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-16 12:21:20,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 290 transitions. [2020-10-16 12:21:20,992 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 290 transitions. Word has length 19 [2020-10-16 12:21:20,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:20,992 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 290 transitions. [2020-10-16 12:21:20,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 12:21:20,992 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 290 transitions. [2020-10-16 12:21:20,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-16 12:21:20,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:20,994 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] [2020-10-16 12:21:21,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-16 12:21:21,211 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:21:21,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:21,212 INFO L82 PathProgramCache]: Analyzing trace with hash -799546606, now seen corresponding path program 1 times [2020-10-16 12:21:21,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:21,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422770666] [2020-10-16 12:21:21,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:21,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:21,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:21,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422770666] [2020-10-16 12:21:21,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:21,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-16 12:21:21,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529412964] [2020-10-16 12:21:21,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:21:21,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:21,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:21:21,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-16 12:21:21,686 INFO L87 Difference]: Start difference. First operand 110 states and 290 transitions. Second operand 10 states. [2020-10-16 12:21:22,493 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-16 12:21:22,855 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-16 12:21:23,437 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-16 12:21:23,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:23,880 INFO L93 Difference]: Finished difference Result 268 states and 728 transitions. [2020-10-16 12:21:23,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 12:21:23,880 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-16 12:21:23,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:23,883 INFO L225 Difference]: With dead ends: 268 [2020-10-16 12:21:23,883 INFO L226 Difference]: Without dead ends: 226 [2020-10-16 12:21:23,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=201, Invalid=449, Unknown=0, NotChecked=0, Total=650 [2020-10-16 12:21:23,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-16 12:21:23,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 110. [2020-10-16 12:21:23,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-16 12:21:23,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 290 transitions. [2020-10-16 12:21:23,896 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 290 transitions. Word has length 20 [2020-10-16 12:21:23,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:23,896 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 290 transitions. [2020-10-16 12:21:23,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:21:23,896 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 290 transitions. [2020-10-16 12:21:23,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-16 12:21:23,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:23,898 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] [2020-10-16 12:21:23,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 12:21:23,898 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:21:23,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:23,899 INFO L82 PathProgramCache]: Analyzing trace with hash -323380434, now seen corresponding path program 2 times [2020-10-16 12:21:23,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:23,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431965967] [2020-10-16 12:21:23,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:24,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:24,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431965967] [2020-10-16 12:21:24,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:24,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-16 12:21:24,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607563366] [2020-10-16 12:21:24,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:21:24,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:24,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:21:24,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-16 12:21:24,303 INFO L87 Difference]: Start difference. First operand 110 states and 290 transitions. Second operand 10 states. [2020-10-16 12:21:25,193 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-16 12:21:25,854 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-16 12:21:26,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:26,209 INFO L93 Difference]: Finished difference Result 356 states and 959 transitions. [2020-10-16 12:21:26,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-16 12:21:26,209 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-16 12:21:26,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:26,212 INFO L225 Difference]: With dead ends: 356 [2020-10-16 12:21:26,212 INFO L226 Difference]: Without dead ends: 324 [2020-10-16 12:21:26,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=181, Invalid=419, Unknown=0, NotChecked=0, Total=600 [2020-10-16 12:21:26,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-16 12:21:26,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 116. [2020-10-16 12:21:26,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-16 12:21:26,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 303 transitions. [2020-10-16 12:21:26,245 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 303 transitions. Word has length 20 [2020-10-16 12:21:26,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:26,245 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 303 transitions. [2020-10-16 12:21:26,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:21:26,246 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 303 transitions. [2020-10-16 12:21:26,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-16 12:21:26,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:26,247 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] [2020-10-16 12:21:26,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 12:21:26,248 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:21:26,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:26,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1380507504, now seen corresponding path program 3 times [2020-10-16 12:21:26,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:26,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857817262] [2020-10-16 12:21:26,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:26,647 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:26,648 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857817262] [2020-10-16 12:21:26,648 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:26,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-16 12:21:26,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400124297] [2020-10-16 12:21:26,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:21:26,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:26,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:21:26,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-16 12:21:26,650 INFO L87 Difference]: Start difference. First operand 116 states and 303 transitions. Second operand 10 states. [2020-10-16 12:21:27,230 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-16 12:21:27,410 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-16 12:21:27,594 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-16 12:21:27,949 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-16 12:21:28,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:28,167 INFO L93 Difference]: Finished difference Result 310 states and 851 transitions. [2020-10-16 12:21:28,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-16 12:21:28,169 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-16 12:21:28,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:28,173 INFO L225 Difference]: With dead ends: 310 [2020-10-16 12:21:28,173 INFO L226 Difference]: Without dead ends: 294 [2020-10-16 12:21:28,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2020-10-16 12:21:28,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-16 12:21:28,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 120. [2020-10-16 12:21:28,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-16 12:21:28,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 313 transitions. [2020-10-16 12:21:28,181 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 313 transitions. Word has length 20 [2020-10-16 12:21:28,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:28,182 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 313 transitions. [2020-10-16 12:21:28,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:21:28,182 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 313 transitions. [2020-10-16 12:21:28,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-16 12:21:28,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:28,183 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] [2020-10-16 12:21:28,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 12:21:28,184 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:21:28,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:28,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1947007856, now seen corresponding path program 4 times [2020-10-16 12:21:28,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:28,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783227890] [2020-10-16 12:21:28,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:28,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:28,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:28,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783227890] [2020-10-16 12:21:28,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 12:21:28,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-16 12:21:28,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307680907] [2020-10-16 12:21:28,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-16 12:21:28,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:28,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-16 12:21:28,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-16 12:21:28,542 INFO L87 Difference]: Start difference. First operand 120 states and 313 transitions. Second operand 10 states. [2020-10-16 12:21:29,162 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-10-16 12:21:29,614 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-10-16 12:21:29,757 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-16 12:21:30,050 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 90 [2020-10-16 12:21:30,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:30,373 INFO L93 Difference]: Finished difference Result 278 states and 761 transitions. [2020-10-16 12:21:30,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-16 12:21:30,374 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-16 12:21:30,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:30,378 INFO L225 Difference]: With dead ends: 278 [2020-10-16 12:21:30,378 INFO L226 Difference]: Without dead ends: 278 [2020-10-16 12:21:30,379 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2020-10-16 12:21:30,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-16 12:21:30,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 126. [2020-10-16 12:21:30,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-16 12:21:30,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 336 transitions. [2020-10-16 12:21:30,398 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 336 transitions. Word has length 20 [2020-10-16 12:21:30,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:30,398 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 336 transitions. [2020-10-16 12:21:30,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-16 12:21:30,398 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 336 transitions. [2020-10-16 12:21:30,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-16 12:21:30,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:30,402 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] [2020-10-16 12:21:30,402 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 12:21:30,404 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:21:30,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:30,407 INFO L82 PathProgramCache]: Analyzing trace with hash -598861718, now seen corresponding path program 5 times [2020-10-16 12:21:30,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:30,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64351379] [2020-10-16 12:21:30,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:30,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:30,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64351379] [2020-10-16 12:21:30,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204747158] [2020-10-16 12:21:30,684 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:21:30,783 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:21:30,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:21:30,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 59 conjunts are in the unsatisfiable core [2020-10-16 12:21:30,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:21:30,867 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 [2020-10-16 12:21:30,877 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-16 12:21:30,929 INFO L625 ElimStorePlain]: treesize reduction 22, result has 67.6 percent of original size [2020-10-16 12:21:30,943 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 [2020-10-16 12:21:30,944 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-16 12:21:30,966 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 12:21:30,969 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. [2020-10-16 12:21:30,969 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:51, output treesize:42 [2020-10-16 12:21:31,103 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 12:21:31,104 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 [2020-10-16 12:21:31,105 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 12:21:31,164 INFO L625 ElimStorePlain]: treesize reduction 16, result has 78.1 percent of original size [2020-10-16 12:21:31,171 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 12:21:31,175 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. [2020-10-16 12:21:31,175 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:53, output treesize:57 [2020-10-16 12:21:31,178 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 12:21:31,850 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 12:21:31,916 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 12:21:31,962 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 12:21:32,023 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 12:21:32,030 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-16 12:21:32,034 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 12:21:32,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:32,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:21:32,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-16 12:21:32,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129136479] [2020-10-16 12:21:32,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-16 12:21:32,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:32,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-16 12:21:32,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=201, Unknown=1, NotChecked=0, Total=240 [2020-10-16 12:21:32,386 INFO L87 Difference]: Start difference. First operand 126 states and 336 transitions. Second operand 16 states. [2020-10-16 12:21:34,486 WARN L193 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-16 12:21:35,645 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-16 12:21:36,699 WARN L193 SmtUtils]: Spent 799.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-10-16 12:21:36,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:36,700 INFO L93 Difference]: Finished difference Result 267 states and 721 transitions. [2020-10-16 12:21:36,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-16 12:21:36,700 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 20 [2020-10-16 12:21:36,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:36,703 INFO L225 Difference]: With dead ends: 267 [2020-10-16 12:21:36,703 INFO L226 Difference]: Without dead ends: 249 [2020-10-16 12:21:36,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=153, Invalid=548, Unknown=1, NotChecked=0, Total=702 [2020-10-16 12:21:36,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-16 12:21:36,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 176. [2020-10-16 12:21:36,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-16 12:21:36,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 484 transitions. [2020-10-16 12:21:36,711 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 484 transitions. Word has length 20 [2020-10-16 12:21:36,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:36,711 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 484 transitions. [2020-10-16 12:21:36,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-16 12:21:36,711 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 484 transitions. [2020-10-16 12:21:36,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-16 12:21:36,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:36,712 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] [2020-10-16 12:21:36,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:21:36,920 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:21:36,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:36,921 INFO L82 PathProgramCache]: Analyzing trace with hash -2064989212, now seen corresponding path program 6 times [2020-10-16 12:21:36,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:36,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507177514] [2020-10-16 12:21:36,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:36,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:37,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:37,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507177514] [2020-10-16 12:21:37,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602343317] [2020-10-16 12:21:37,201 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:21:37,273 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-16 12:21:37,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:21:37,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 33 conjunts are in the unsatisfiable core [2020-10-16 12:21:37,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:21:37,293 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 [2020-10-16 12:21:37,295 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 12:21:37,321 INFO L625 ElimStorePlain]: treesize reduction 42, result has 30.0 percent of original size [2020-10-16 12:21:37,324 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-16 12:21:37,324 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:14 [2020-10-16 12:21:37,373 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 [2020-10-16 12:21:37,374 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 12:21:37,381 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 12:21:37,383 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. [2020-10-16 12:21:37,383 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:23 [2020-10-16 12:21:37,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:37,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:21:37,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 11 [2020-10-16 12:21:37,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763528467] [2020-10-16 12:21:37,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-16 12:21:37,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:37,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-16 12:21:37,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-16 12:21:37,464 INFO L87 Difference]: Start difference. First operand 176 states and 484 transitions. Second operand 13 states. [2020-10-16 12:21:39,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:39,070 INFO L93 Difference]: Finished difference Result 526 states and 1436 transitions. [2020-10-16 12:21:39,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-16 12:21:39,071 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2020-10-16 12:21:39,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:39,074 INFO L225 Difference]: With dead ends: 526 [2020-10-16 12:21:39,074 INFO L226 Difference]: Without dead ends: 465 [2020-10-16 12:21:39,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=208, Invalid=784, Unknown=0, NotChecked=0, Total=992 [2020-10-16 12:21:39,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-10-16 12:21:39,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 216. [2020-10-16 12:21:39,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-16 12:21:39,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 598 transitions. [2020-10-16 12:21:39,087 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 598 transitions. Word has length 20 [2020-10-16 12:21:39,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:39,087 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 598 transitions. [2020-10-16 12:21:39,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-16 12:21:39,088 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 598 transitions. [2020-10-16 12:21:39,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-16 12:21:39,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:39,089 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] [2020-10-16 12:21:39,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:21:39,303 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:21:39,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:39,304 INFO L82 PathProgramCache]: Analyzing trace with hash 2072690650, now seen corresponding path program 1 times [2020-10-16 12:21:39,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:39,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395410995] [2020-10-16 12:21:39,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:39,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:39,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395410995] [2020-10-16 12:21:39,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999571501] [2020-10-16 12:21:39,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:21:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:39,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 70 conjunts are in the unsatisfiable core [2020-10-16 12:21:39,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:21:39,634 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 138 [2020-10-16 12:21:39,637 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-16 12:21:39,700 INFO L625 ElimStorePlain]: treesize reduction 104, result has 30.7 percent of original size [2020-10-16 12:21:39,706 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 [2020-10-16 12:21:39,707 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-16 12:21:39,728 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 12:21:39,729 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. [2020-10-16 12:21:39,730 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:51, output treesize:42 [2020-10-16 12:21:39,843 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 12:21:39,843 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 [2020-10-16 12:21:39,844 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 12:21:39,929 INFO L625 ElimStorePlain]: treesize reduction 16, result has 78.9 percent of original size [2020-10-16 12:21:39,932 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 12:21:39,935 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. [2020-10-16 12:21:39,935 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:56, output treesize:60 [2020-10-16 12:21:39,937 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 12:21:40,615 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-10-16 12:21:40,629 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-16 12:21:40,771 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2020-10-16 12:21:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:41,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:21:41,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 18 [2020-10-16 12:21:41,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136397227] [2020-10-16 12:21:41,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-16 12:21:41,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:41,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-16 12:21:41,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-10-16 12:21:41,152 INFO L87 Difference]: Start difference. First operand 216 states and 598 transitions. Second operand 20 states. [2020-10-16 12:21:42,136 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-16 12:21:42,415 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-16 12:21:42,773 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-10-16 12:21:42,952 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-16 12:21:43,138 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-10-16 12:21:43,321 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-16 12:21:43,792 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-10-16 12:21:43,955 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-10-16 12:21:44,339 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-16 12:21:44,520 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-16 12:21:45,036 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-10-16 12:21:45,367 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-10-16 12:21:45,616 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-16 12:21:45,775 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-16 12:21:45,985 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-16 12:21:46,327 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-10-16 12:21:46,756 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-16 12:21:46,934 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-10-16 12:21:47,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:47,180 INFO L93 Difference]: Finished difference Result 594 states and 1663 transitions. [2020-10-16 12:21:47,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-16 12:21:47,180 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 22 [2020-10-16 12:21:47,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:47,181 INFO L225 Difference]: With dead ends: 594 [2020-10-16 12:21:47,181 INFO L226 Difference]: Without dead ends: 52 [2020-10-16 12:21:47,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=623, Invalid=2239, Unknown=0, NotChecked=0, Total=2862 [2020-10-16 12:21:47,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-16 12:21:47,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2020-10-16 12:21:47,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-16 12:21:47,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 93 transitions. [2020-10-16 12:21:47,185 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 93 transitions. Word has length 22 [2020-10-16 12:21:47,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:47,185 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 93 transitions. [2020-10-16 12:21:47,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-16 12:21:47,185 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 93 transitions. [2020-10-16 12:21:47,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-16 12:21:47,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 12:21:47,186 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] [2020-10-16 12:21:47,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-16 12:21:47,397 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-16 12:21:47,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 12:21:47,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1720059924, now seen corresponding path program 2 times [2020-10-16 12:21:47,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 12:21:47,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197486172] [2020-10-16 12:21:47,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 12:21:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 12:21:47,651 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 12:21:47,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197486172] [2020-10-16 12:21:47,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960353304] [2020-10-16 12:21:47,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 12:21:47,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-16 12:21:47,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-16 12:21:47,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 35 conjunts are in the unsatisfiable core [2020-10-16 12:21:47,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-16 12:21:47,764 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 31 treesize of output 29 [2020-10-16 12:21:47,765 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-16 12:21:47,803 INFO L625 ElimStorePlain]: treesize reduction 18, result has 61.7 percent of original size [2020-10-16 12:21:47,810 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 [2020-10-16 12:21:47,810 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-16 12:21:47,828 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 12:21:47,829 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. [2020-10-16 12:21:47,829 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:35, output treesize:25 [2020-10-16 12:21:47,968 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-16 12:21:47,969 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 [2020-10-16 12:21:47,970 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-16 12:21:47,992 INFO L625 ElimStorePlain]: treesize reduction 28, result has 54.8 percent of original size [2020-10-16 12:21:47,995 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. [2020-10-16 12:21:47,995 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:38, output treesize:34 [2020-10-16 12:21:48,083 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 12:21:48,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-16 12:21:48,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 12 [2020-10-16 12:21:48,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371438039] [2020-10-16 12:21:48,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-16 12:21:48,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 12:21:48,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-16 12:21:48,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-16 12:21:48,085 INFO L87 Difference]: Start difference. First operand 48 states and 93 transitions. Second operand 14 states. [2020-10-16 12:21:48,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 12:21:48,894 INFO L93 Difference]: Finished difference Result 51 states and 97 transitions. [2020-10-16 12:21:48,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-16 12:21:48,895 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 22 [2020-10-16 12:21:48,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 12:21:48,896 INFO L225 Difference]: With dead ends: 51 [2020-10-16 12:21:48,896 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 12:21:48,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2020-10-16 12:21:48,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 12:21:48,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 12:21:48,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 12:21:48,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 12:21:48,898 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-10-16 12:21:48,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 12:21:48,898 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 12:21:48,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-16 12:21:48,898 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 12:21:48,898 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 12:21:49,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-16 12:21:49,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 12:21:49 BasicIcfg [2020-10-16 12:21:49,104 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 12:21:49,105 INFO L168 Benchmark]: Toolchain (without parser) took 34889.84 ms. Allocated memory was 139.5 MB in the beginning and 406.3 MB in the end (delta: 266.9 MB). Free memory was 99.8 MB in the beginning and 365.3 MB in the end (delta: -265.6 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 12:21:49,105 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 12:21:49,106 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.43 ms. Allocated memory was 139.5 MB in the beginning and 200.8 MB in the end (delta: 61.3 MB). Free memory was 99.3 MB in the beginning and 176.2 MB in the end (delta: -76.8 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-10-16 12:21:49,106 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.10 ms. Allocated memory is still 200.8 MB. Free memory was 176.2 MB in the beginning and 174.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 12:21:49,107 INFO L168 Benchmark]: Boogie Preprocessor took 31.29 ms. Allocated memory is still 200.8 MB. Free memory was 174.2 MB in the beginning and 172.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 12:21:49,107 INFO L168 Benchmark]: RCFGBuilder took 471.10 ms. Allocated memory is still 200.8 MB. Free memory was 172.9 MB in the beginning and 146.9 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-10-16 12:21:49,108 INFO L168 Benchmark]: TraceAbstraction took 33973.59 ms. Allocated memory was 200.8 MB in the beginning and 406.3 MB in the end (delta: 205.5 MB). Free memory was 146.3 MB in the beginning and 365.3 MB in the end (delta: -219.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 12:21:49,113 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 368.43 ms. Allocated memory was 139.5 MB in the beginning and 200.8 MB in the end (delta: 61.3 MB). Free memory was 99.3 MB in the beginning and 176.2 MB in the end (delta: -76.8 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 40.10 ms. Allocated memory is still 200.8 MB. Free memory was 176.2 MB in the beginning and 174.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.29 ms. Allocated memory is still 200.8 MB. Free memory was 174.2 MB in the beginning and 172.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 471.10 ms. Allocated memory is still 200.8 MB. Free memory was 172.9 MB in the beginning and 146.9 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33973.59 ms. Allocated memory was 200.8 MB in the beginning and 406.3 MB in the end (delta: 205.5 MB). Free memory was 146.3 MB in the beginning and 365.3 MB in the end (delta: -219.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1124 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 82 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.3s, 135 PlacesBefore, 31 PlacesAfterwards, 138 TransitionsBefore, 30 TransitionsAfterwards, 1920 CoEnabledTransitionPairs, 7 FixpointIterations, 70 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 11 ConcurrentYvCompositions, 4 ChoiceCompositions, 125 TotalNumberOfCompositions, 4237 MoverChecksTotal - 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: 33.8s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 20.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 345 SDtfs, 1762 SDslu, 1188 SDs, 0 SdLazy, 3011 SolverSat, 260 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 5.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 306 GetRequests, 73 SyntacticMatches, 4 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 18.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred in iteration=9, 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, 11 MinimizatonAttempts, 1047 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 318 NumberOfCodeBlocks, 318 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 302 ConstructedInterpolants, 74 QuantifiedInterpolants, 120955 SizeOfPredicates, 90 NumberOfNonLiveVariables, 820 ConjunctsInSsa, 226 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 6/26 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...