/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/concurrent/pthreads/distributed_search2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 01:09:05,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 01:09:05,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 01:09:05,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 01:09:05,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 01:09:05,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 01:09:05,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 01:09:05,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 01:09:05,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 01:09:05,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 01:09:05,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 01:09:05,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 01:09:05,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 01:09:05,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 01:09:05,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 01:09:05,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 01:09:05,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 01:09:05,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 01:09:05,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 01:09:05,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 01:09:05,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 01:09:05,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 01:09:05,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 01:09:05,608 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 01:09:05,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-22 01:09:05,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 01:09:05,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 01:09:05,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 01:09:05,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 01:09:05,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 01:09:05,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 01:09:05,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 01:09:05,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 01:09:05,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 01:09:05,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 01:09:05,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 01:09:05,640 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-22 01:09:05,670 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 01:09:05,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 01:09:05,672 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 01:09:05,672 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 01:09:05,672 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 01:09:05,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 01:09:05,673 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 01:09:05,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 01:09:05,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 01:09:05,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 01:09:05,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 01:09:05,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 01:09:05,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 01:09:05,676 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 01:09:05,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 01:09:05,676 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 01:09:05,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 01:09:05,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 01:09:05,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 01:09:05,677 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 01:09:05,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 01:09:05,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 01:09:05,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 01:09:05,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 01:09:05,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 01:09:05,678 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 01:09:05,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 01:09:05,679 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 01:09:05,679 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 01:09:05,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 01:09:05,680 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 01:09:05,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 01:09:06,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 01:09:06,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 01:09:06,007 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 01:09:06,008 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 01:09:06,008 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/distributed_search2.c [2020-10-22 01:09:06,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f3f2ce9d/e9883d7483634768a0eb616e1394ee83/FLAG5df816f10 [2020-10-22 01:09:06,493 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 01:09:06,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/distributed_search2.c [2020-10-22 01:09:06,494 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-22 01:09:06,495 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-22 01:09:06,538 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f3f2ce9d/e9883d7483634768a0eb616e1394ee83/FLAG5df816f10 [2020-10-22 01:09:06,811 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f3f2ce9d/e9883d7483634768a0eb616e1394ee83 [2020-10-22 01:09:06,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 01:09:06,830 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 01:09:06,831 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 01:09:06,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 01:09:06,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 01:09:06,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 01:09:06" (1/1) ... [2020-10-22 01:09:06,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@617dcdd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:09:06, skipping insertion in model container [2020-10-22 01:09:06,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 01:09:06" (1/1) ... [2020-10-22 01:09:06,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 01:09:06,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 01:09:07,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 01:09:07,160 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 01:09:07,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 01:09:07,198 INFO L208 MainTranslator]: Completed translation [2020-10-22 01:09:07,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:09:07 WrapperNode [2020-10-22 01:09:07,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 01:09:07,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 01:09:07,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 01:09:07,200 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 01:09:07,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:09:07" (1/1) ... [2020-10-22 01:09:07,214 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:09:07" (1/1) ... [2020-10-22 01:09:07,237 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 01:09:07,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 01:09:07,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 01:09:07,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 01:09:07,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:09:07" (1/1) ... [2020-10-22 01:09:07,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:09:07" (1/1) ... [2020-10-22 01:09:07,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:09:07" (1/1) ... [2020-10-22 01:09:07,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:09:07" (1/1) ... [2020-10-22 01:09:07,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:09:07" (1/1) ... [2020-10-22 01:09:07,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:09:07" (1/1) ... [2020-10-22 01:09:07,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:09:07" (1/1) ... [2020-10-22 01:09:07,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 01:09:07,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 01:09:07,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 01:09:07,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 01:09:07,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:09:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 01:09:07,325 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 01:09:07,325 INFO L130 BoogieDeclarations]: Found specification of procedure search_worker [2020-10-22 01:09:07,325 INFO L138 BoogieDeclarations]: Found implementation of procedure search_worker [2020-10-22 01:09:07,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 01:09:07,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 01:09:07,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 01:09:07,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-22 01:09:07,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 01:09:07,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 01:09:07,328 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 01:09:07,753 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 01:09:07,754 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-22 01:09:07,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 01:09:07 BoogieIcfgContainer [2020-10-22 01:09:07,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 01:09:07,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 01:09:07,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 01:09:07,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 01:09:07,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 01:09:06" (1/3) ... [2020-10-22 01:09:07,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b57c0d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 01:09:07, skipping insertion in model container [2020-10-22 01:09:07,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 01:09:07" (2/3) ... [2020-10-22 01:09:07,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b57c0d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 01:09:07, skipping insertion in model container [2020-10-22 01:09:07,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 01:09:07" (3/3) ... [2020-10-22 01:09:07,764 INFO L111 eAbstractionObserver]: Analyzing ICFG distributed_search2.c [2020-10-22 01:09:07,775 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 01:09:07,775 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 01:09:07,784 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 01:09:07,785 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 01:09:07,823 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#in~params.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,824 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#in~params.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,824 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,824 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,825 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,825 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,825 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,825 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,826 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,826 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,826 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,827 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,828 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,828 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,828 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,828 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,828 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,829 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,829 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,829 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,829 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,830 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,830 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,830 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,831 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,831 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,831 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,832 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,832 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,832 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,833 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,833 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,834 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,834 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,834 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,835 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,835 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,836 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,837 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,837 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,838 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#in~params.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,839 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#in~params.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,839 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,840 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,840 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,840 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,840 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,841 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,841 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,841 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,842 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,842 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,843 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,843 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,843 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,843 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,845 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,845 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,845 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,846 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,846 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,846 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,847 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,847 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,847 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,848 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,848 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,848 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,848 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,849 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,849 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,855 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,856 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,856 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,856 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,857 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,858 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,858 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,858 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,859 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,864 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,865 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,865 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,866 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,866 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,867 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,867 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,868 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,868 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,869 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,869 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,869 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,869 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,877 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,877 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,877 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,878 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,878 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,878 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,878 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,879 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,879 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,879 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,879 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,880 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,880 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 01:09:07,900 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-22 01:09:07,915 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-22 01:09:07,945 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 01:09:07,945 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 01:09:07,946 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 01:09:07,946 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 01:09:07,946 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 01:09:07,946 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 01:09:07,947 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 01:09:07,947 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 01:09:07,963 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 01:09:07,964 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 138 transitions, 298 flow [2020-10-22 01:09:07,966 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 138 transitions, 298 flow [2020-10-22 01:09:07,968 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 135 places, 138 transitions, 298 flow [2020-10-22 01:09:08,053 INFO L129 PetriNetUnfolder]: 9/138 cut-off events. [2020-10-22 01:09:08,053 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-22 01:09:08,059 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. [2020-10-22 01:09:08,064 INFO L116 LiptonReduction]: Number of co-enabled transitions 1920 [2020-10-22 01:09:10,036 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-22 01:09:10,155 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-22 01:09:10,543 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-22 01:09:10,885 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-22 01:09:10,893 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 11, 1] term [2020-10-22 01:09:10,893 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:09:10,895 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:09:10,900 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-22 01:09:11,412 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 119 [2020-10-22 01:09:11,597 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-22 01:09:11,834 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-22 01:09:12,082 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-22 01:09:12,092 INFO L131 LiptonReduction]: Checked pairs total: 4237 [2020-10-22 01:09:12,092 INFO L133 LiptonReduction]: Total number of compositions: 125 [2020-10-22 01:09:12,099 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 30 transitions, 82 flow [2020-10-22 01:09:12,114 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 126 states. [2020-10-22 01:09:12,116 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states. [2020-10-22 01:09:12,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-22 01:09:12,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:09:12,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:09:12,127 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-22 01:09:12,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:09:12,133 INFO L82 PathProgramCache]: Analyzing trace with hash -878946956, now seen corresponding path program 1 times [2020-10-22 01:09:12,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:09:12,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902838855] [2020-10-22 01:09:12,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:09:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:09:12,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:09:12,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902838855] [2020-10-22 01:09:12,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:09:12,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-22 01:09:12,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1072140555] [2020-10-22 01:09:12,360 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:09:12,365 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:09:12,392 INFO L252 McrAutomatonBuilder]: Finished intersection with 46 states and 80 transitions. [2020-10-22 01:09:12,393 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:09:12,828 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:09:12,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-22 01:09:12,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:09:12,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-22 01:09:12,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-22 01:09:12,844 INFO L87 Difference]: Start difference. First operand 126 states. Second operand 5 states. [2020-10-22 01:09:12,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:09:12,949 INFO L93 Difference]: Finished difference Result 126 states and 313 transitions. [2020-10-22 01:09:12,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 01:09:12,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-22 01:09:12,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:09:12,964 INFO L225 Difference]: With dead ends: 126 [2020-10-22 01:09:12,964 INFO L226 Difference]: Without dead ends: 104 [2020-10-22 01:09:12,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-22 01:09:12,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-22 01:09:13,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-22 01:09:13,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-22 01:09:13,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 267 transitions. [2020-10-22 01:09:13,013 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 267 transitions. Word has length 16 [2020-10-22 01:09:13,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:09:13,014 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 267 transitions. [2020-10-22 01:09:13,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-22 01:09:13,014 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 267 transitions. [2020-10-22 01:09:13,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-22 01:09:13,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:09:13,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:09:13,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 01:09:13,017 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-22 01:09:13,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:09:13,017 INFO L82 PathProgramCache]: Analyzing trace with hash 351436872, now seen corresponding path program 1 times [2020-10-22 01:09:13,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:09:13,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417716214] [2020-10-22 01:09:13,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:09:13,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:09:13,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:09:13,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417716214] [2020-10-22 01:09:13,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:09:13,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 01:09:13,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [494130284] [2020-10-22 01:09:13,144 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:09:13,147 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:09:13,156 INFO L252 McrAutomatonBuilder]: Finished intersection with 43 states and 74 transitions. [2020-10-22 01:09:13,156 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:09:13,519 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:09:13,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 01:09:13,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:09:13,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 01:09:13,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:09:13,521 INFO L87 Difference]: Start difference. First operand 104 states and 267 transitions. Second operand 3 states. [2020-10-22 01:09:13,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:09:13,559 INFO L93 Difference]: Finished difference Result 170 states and 444 transitions. [2020-10-22 01:09:13,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 01:09:13,560 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-22 01:09:13,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:09:13,562 INFO L225 Difference]: With dead ends: 170 [2020-10-22 01:09:13,562 INFO L226 Difference]: Without dead ends: 163 [2020-10-22 01:09:13,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 01:09:13,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-22 01:09:13,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 140. [2020-10-22 01:09:13,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-22 01:09:13,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 372 transitions. [2020-10-22 01:09:13,580 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 372 transitions. Word has length 16 [2020-10-22 01:09:13,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:09:13,581 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 372 transitions. [2020-10-22 01:09:13,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 01:09:13,581 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 372 transitions. [2020-10-22 01:09:13,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-22 01:09:13,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:09:13,583 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 01:09:13,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 01:09:13,583 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-22 01:09:13,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:09:13,584 INFO L82 PathProgramCache]: Analyzing trace with hash 443469900, now seen corresponding path program 1 times [2020-10-22 01:09:13,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:09:13,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562241249] [2020-10-22 01:09:13,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:09:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:09:13,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:09:13,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562241249] [2020-10-22 01:09:13,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193784409] [2020-10-22 01:09:13,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:09:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:09:13,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-22 01:09:13,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:09:13,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:09:13,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:09:13,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2020-10-22 01:09:13,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1631565113] [2020-10-22 01:09:13,957 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:09:13,961 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:09:13,976 INFO L252 McrAutomatonBuilder]: Finished intersection with 60 states and 111 transitions. [2020-10-22 01:09:13,976 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:09:14,352 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-22 01:09:14,452 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-22 01:09:14,564 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-22 01:09:14,640 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-10-22 01:09:14,667 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1248#(or (and (= |ULTIMATE.start_main_~#haystack~0.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#haystack~0.base|) (* search_workerThread1of1ForFork1_~i~0 4)) ULTIMATE.start_main_~needle~0)) (not (= ~search_needle~0 (select (select |#memory_int| ~search_haystack~0.base) (+ ~search_haystack~0.offset (* search_workerThread1of1ForFork1_~i~0 4))))))] [2020-10-22 01:09:14,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 01:09:14,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:09:14,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 01:09:14,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-22 01:09:14,669 INFO L87 Difference]: Start difference. First operand 140 states and 372 transitions. Second operand 6 states. [2020-10-22 01:09:14,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:09:14,820 INFO L93 Difference]: Finished difference Result 202 states and 539 transitions. [2020-10-22 01:09:14,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 01:09:14,821 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-22 01:09:14,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:09:14,824 INFO L225 Difference]: With dead ends: 202 [2020-10-22 01:09:14,824 INFO L226 Difference]: Without dead ends: 158 [2020-10-22 01:09:14,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-22 01:09:14,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-22 01:09:14,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 110. [2020-10-22 01:09:14,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-22 01:09:14,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 290 transitions. [2020-10-22 01:09:14,836 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 290 transitions. Word has length 19 [2020-10-22 01:09:14,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:09:14,836 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 290 transitions. [2020-10-22 01:09:14,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 01:09:14,837 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 290 transitions. [2020-10-22 01:09:14,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-22 01:09:14,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:09:14,838 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] [2020-10-22 01:09:15,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-22 01:09:15,052 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-22 01:09:15,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:09:15,053 INFO L82 PathProgramCache]: Analyzing trace with hash -799546606, now seen corresponding path program 1 times [2020-10-22 01:09:15,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:09:15,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556050427] [2020-10-22 01:09:15,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:09:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:09:15,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:09:15,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556050427] [2020-10-22 01:09:15,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 01:09:15,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-22 01:09:15,534 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [529166361] [2020-10-22 01:09:15,534 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:09:15,537 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:09:15,546 INFO L252 McrAutomatonBuilder]: Finished intersection with 50 states and 86 transitions. [2020-10-22 01:09:15,546 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:09:16,534 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 9 new interpolants: [1687#(and (= (mod ~search_found~0 256) 0) (< search_workerThread1of1ForFork1_~i~0 search_workerThread1of1ForFork1_~upper~0)), 1688#(and (or (not (= (mod ~search_found~0 256) 0)) (< search_workerThread1of1ForFork1_~i~0 search_workerThread1of1ForFork1_~upper~0) (<= search_workerThread1of1ForFork0_~upper~0 search_workerThread1of1ForFork0_~i~0)) (or (and (= (mod ~search_found~0 256) 0) (< search_workerThread1of1ForFork1_~i~0 search_workerThread1of1ForFork1_~upper~0)) (= search_workerThread1of1ForFork0_~i~0 0))), 1689#(and (or (not (= (mod ~search_found~0 256) 0)) (< search_workerThread1of1ForFork1_~i~0 search_workerThread1of1ForFork1_~upper~0) (<= (select (select |#memory_int| search_workerThread1of1ForFork0_~bounds~0.base) (+ search_workerThread1of1ForFork0_~bounds~0.offset 4)) search_workerThread1of1ForFork0_~lower~0)) (or (= search_workerThread1of1ForFork0_~lower~0 0) (and (= (mod ~search_found~0 256) 0) (< search_workerThread1of1ForFork1_~i~0 search_workerThread1of1ForFork1_~upper~0)))), 1690#(and (= (mod ~search_found~0 256) 0) (< (select (select |#memory_int| |search_workerThread1of1ForFork1_#in~params.base|) |search_workerThread1of1ForFork1_#in~params.offset|) (select (select |#memory_int| |search_workerThread1of1ForFork1_#in~params.base|) (+ |search_workerThread1of1ForFork1_#in~params.offset| 4)))), 1691#(and (or (= search_workerThread1of1ForFork0_~i~0 0) (and (= (mod ~search_found~0 256) 0) (< (select (select |#memory_int| |search_workerThread1of1ForFork1_#in~params.base|) |search_workerThread1of1ForFork1_#in~params.offset|) (select (select |#memory_int| |search_workerThread1of1ForFork1_#in~params.base|) (+ |search_workerThread1of1ForFork1_#in~params.offset| 4))))) (or (not (= (mod ~search_found~0 256) 0)) (<= search_workerThread1of1ForFork0_~upper~0 search_workerThread1of1ForFork0_~i~0) (< (select (select |#memory_int| |search_workerThread1of1ForFork1_#in~params.base|) |search_workerThread1of1ForFork1_#in~params.offset|) (select (select |#memory_int| |search_workerThread1of1ForFork1_#in~params.base|) (+ |search_workerThread1of1ForFork1_#in~params.offset| 4))))), 1692#(and (or (= search_workerThread1of1ForFork0_~lower~0 0) (and (= (mod ~search_found~0 256) 0) (< (select (select |#memory_int| |search_workerThread1of1ForFork1_#in~params.base|) |search_workerThread1of1ForFork1_#in~params.offset|) (select (select |#memory_int| |search_workerThread1of1ForFork1_#in~params.base|) (+ |search_workerThread1of1ForFork1_#in~params.offset| 4))))) (or (not (= (mod ~search_found~0 256) 0)) (<= (select (select |#memory_int| search_workerThread1of1ForFork0_~bounds~0.base) (+ search_workerThread1of1ForFork0_~bounds~0.offset 4)) search_workerThread1of1ForFork0_~lower~0) (< (select (select |#memory_int| |search_workerThread1of1ForFork1_#in~params.base|) |search_workerThread1of1ForFork1_#in~params.offset|) (select (select |#memory_int| |search_workerThread1of1ForFork1_#in~params.base|) (+ |search_workerThread1of1ForFork1_#in~params.offset| 4))))), 1693#(and (= (mod ~search_found~0 256) 0) (< (select (select |#memory_int| |ULTIMATE.start_search_~#bounds2~0.base|) |ULTIMATE.start_search_~#bounds2~0.offset|) (select (select |#memory_int| |ULTIMATE.start_search_~#bounds2~0.base|) (+ |ULTIMATE.start_search_~#bounds2~0.offset| 4)))), 1694#(and (or (not (= (mod ~search_found~0 256) 0)) (<= search_workerThread1of1ForFork0_~upper~0 search_workerThread1of1ForFork0_~i~0) (< (select (select |#memory_int| |ULTIMATE.start_search_~#bounds2~0.base|) |ULTIMATE.start_search_~#bounds2~0.offset|) (select (select |#memory_int| |ULTIMATE.start_search_~#bounds2~0.base|) (+ |ULTIMATE.start_search_~#bounds2~0.offset| 4)))) (or (= search_workerThread1of1ForFork0_~i~0 0) (and (= (mod ~search_found~0 256) 0) (< (select (select |#memory_int| |ULTIMATE.start_search_~#bounds2~0.base|) |ULTIMATE.start_search_~#bounds2~0.offset|) (select (select |#memory_int| |ULTIMATE.start_search_~#bounds2~0.base|) (+ |ULTIMATE.start_search_~#bounds2~0.offset| 4)))))), 1695#(and (or (not (= (mod ~search_found~0 256) 0)) (<= (select (select |#memory_int| search_workerThread1of1ForFork0_~bounds~0.base) (+ search_workerThread1of1ForFork0_~bounds~0.offset 4)) search_workerThread1of1ForFork0_~lower~0) (< (select (select |#memory_int| |ULTIMATE.start_search_~#bounds2~0.base|) |ULTIMATE.start_search_~#bounds2~0.offset|) (select (select |#memory_int| |ULTIMATE.start_search_~#bounds2~0.base|) (+ |ULTIMATE.start_search_~#bounds2~0.offset| 4)))) (or (= search_workerThread1of1ForFork0_~lower~0 0) (and (= (mod ~search_found~0 256) 0) (< (select (select |#memory_int| |ULTIMATE.start_search_~#bounds2~0.base|) |ULTIMATE.start_search_~#bounds2~0.offset|) (select (select |#memory_int| |ULTIMATE.start_search_~#bounds2~0.base|) (+ |ULTIMATE.start_search_~#bounds2~0.offset| 4))))))] [2020-10-22 01:09:16,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-22 01:09:16,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:09:16,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-22 01:09:16,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2020-10-22 01:09:16,536 INFO L87 Difference]: Start difference. First operand 110 states and 290 transitions. Second operand 19 states. [2020-10-22 01:09:17,497 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 87 [2020-10-22 01:09:17,922 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2020-10-22 01:09:18,477 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 95 [2020-10-22 01:09:18,767 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-22 01:09:18,956 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-10-22 01:09:19,479 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-10-22 01:09:19,666 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-22 01:09:20,025 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-22 01:09:20,252 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-10-22 01:09:20,813 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2020-10-22 01:09:21,293 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2020-10-22 01:09:21,457 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-22 01:09:21,751 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2020-10-22 01:09:22,551 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 98 [2020-10-22 01:09:22,753 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 56 [2020-10-22 01:09:23,190 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-22 01:09:23,406 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-10-22 01:09:23,677 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 64 [2020-10-22 01:09:24,249 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2020-10-22 01:09:24,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:09:24,640 INFO L93 Difference]: Finished difference Result 341 states and 947 transitions. [2020-10-22 01:09:24,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-22 01:09:24,640 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 20 [2020-10-22 01:09:24,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:09:24,644 INFO L225 Difference]: With dead ends: 341 [2020-10-22 01:09:24,644 INFO L226 Difference]: Without dead ends: 299 [2020-10-22 01:09:24,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=667, Invalid=2195, Unknown=0, NotChecked=0, Total=2862 [2020-10-22 01:09:24,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-22 01:09:24,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 130. [2020-10-22 01:09:24,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-22 01:09:24,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 351 transitions. [2020-10-22 01:09:24,658 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 351 transitions. Word has length 20 [2020-10-22 01:09:24,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:09:24,659 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 351 transitions. [2020-10-22 01:09:24,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-22 01:09:24,659 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 351 transitions. [2020-10-22 01:09:24,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-22 01:09:24,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:09:24,661 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] [2020-10-22 01:09:24,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 01:09:24,661 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-22 01:09:24,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:09:24,661 INFO L82 PathProgramCache]: Analyzing trace with hash -598861718, now seen corresponding path program 2 times [2020-10-22 01:09:24,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:09:24,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815382882] [2020-10-22 01:09:24,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:09:24,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:09:24,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:09:24,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815382882] [2020-10-22 01:09:24,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522831034] [2020-10-22 01:09:24,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:09:24,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:09:24,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:09:24,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 70 conjunts are in the unsatisfiable core [2020-10-22 01:09:24,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:09:25,033 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 [2020-10-22 01:09:25,035 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-22 01:09:25,087 INFO L625 ElimStorePlain]: treesize reduction 22, result has 67.6 percent of original size [2020-10-22 01:09:25,100 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 [2020-10-22 01:09:25,100 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:25,118 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-22 01:09:25,121 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. [2020-10-22 01:09:25,121 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:51, output treesize:42 [2020-10-22 01:09:25,270 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-22 01:09:25,271 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 [2020-10-22 01:09:25,272 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:25,334 INFO L625 ElimStorePlain]: treesize reduction 16, result has 78.9 percent of original size [2020-10-22 01:09:25,346 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:09:25,352 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. [2020-10-22 01:09:25,353 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:56, output treesize:60 [2020-10-22 01:09:25,356 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:09:25,992 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-10-22 01:09:26,004 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:09:26,684 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2020-10-22 01:09:27,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:09:27,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:09:27,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 16 [2020-10-22 01:09:27,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [454536374] [2020-10-22 01:09:27,024 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:09:27,026 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:09:27,038 INFO L252 McrAutomatonBuilder]: Finished intersection with 61 states and 109 transitions. [2020-10-22 01:09:27,038 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:09:28,207 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:09:28,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:09:28,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:09:28,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:09:28,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2020-10-22 01:09:28,209 INFO L87 Difference]: Start difference. First operand 130 states and 351 transitions. Second operand 9 states. [2020-10-22 01:09:28,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:09:28,704 INFO L93 Difference]: Finished difference Result 282 states and 767 transitions. [2020-10-22 01:09:28,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-22 01:09:28,705 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-10-22 01:09:28,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:09:28,708 INFO L225 Difference]: With dead ends: 282 [2020-10-22 01:09:28,708 INFO L226 Difference]: Without dead ends: 264 [2020-10-22 01:09:28,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2020-10-22 01:09:28,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-10-22 01:09:28,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 191. [2020-10-22 01:09:28,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-22 01:09:28,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 530 transitions. [2020-10-22 01:09:28,720 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 530 transitions. Word has length 20 [2020-10-22 01:09:28,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:09:28,721 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 530 transitions. [2020-10-22 01:09:28,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:09:28,721 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 530 transitions. [2020-10-22 01:09:28,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-22 01:09:28,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:09:28,724 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] [2020-10-22 01:09:28,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:09:28,940 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-22 01:09:28,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:09:28,941 INFO L82 PathProgramCache]: Analyzing trace with hash -2064989212, now seen corresponding path program 3 times [2020-10-22 01:09:28,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:09:28,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808800394] [2020-10-22 01:09:28,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:09:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:09:29,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:09:29,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808800394] [2020-10-22 01:09:29,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551644032] [2020-10-22 01:09:29,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:09:29,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-22 01:09:29,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:09:29,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 33 conjunts are in the unsatisfiable core [2020-10-22 01:09:29,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:09:29,245 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 [2020-10-22 01:09:29,247 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:29,273 INFO L625 ElimStorePlain]: treesize reduction 42, result has 30.0 percent of original size [2020-10-22 01:09:29,275 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-22 01:09:29,275 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:14 [2020-10-22 01:09:29,328 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 [2020-10-22 01:09:29,329 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:29,344 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-22 01:09:29,345 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. [2020-10-22 01:09:29,346 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:23 [2020-10-22 01:09:29,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:09:29,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:09:29,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 11 [2020-10-22 01:09:29,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1127113838] [2020-10-22 01:09:29,439 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:09:29,442 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:09:29,449 INFO L252 McrAutomatonBuilder]: Finished intersection with 48 states and 79 transitions. [2020-10-22 01:09:29,450 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:09:29,904 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-10-22 01:09:29,906 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 01:09:29,927 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:29,928 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:29,937 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:29,938 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:29,956 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:29,957 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:29,963 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:29,964 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:29,969 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:29,970 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:29,983 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:29,984 INFO L545 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:29,989 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:29,990 INFO L545 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:29,996 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:29,997 INFO L545 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:30,002 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:30,002 INFO L545 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:30,118 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-10-22 01:09:30,119 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-22 01:09:30,124 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 12 dim-0 vars, and 9 xjuncts. [2020-10-22 01:09:30,125 INFO L244 ElimStorePlain]: Needed 10 recursive calls to eliminate 3 variables, input treesize:388, output treesize:334 [2020-10-22 01:09:30,168 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-10-22 01:09:30,171 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 01:09:30,184 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:30,185 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:30,191 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:30,192 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:30,198 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:30,199 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:30,205 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:30,205 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:30,211 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:30,212 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:30,219 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:30,220 INFO L545 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:30,228 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:30,229 INFO L545 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:30,234 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:30,235 INFO L545 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:30,242 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:30,243 INFO L545 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:30,357 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-10-22 01:09:30,358 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-22 01:09:30,362 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 12 dim-0 vars, and 9 xjuncts. [2020-10-22 01:09:30,363 INFO L244 ElimStorePlain]: Needed 10 recursive calls to eliminate 3 variables, input treesize:388, output treesize:334 [2020-10-22 01:09:30,395 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-10-22 01:09:30,397 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 01:09:30,416 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:30,416 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:30,422 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:30,423 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:30,429 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:30,429 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:30,436 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:30,437 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:30,442 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:30,443 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:30,449 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:30,450 INFO L545 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:30,455 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:30,457 INFO L545 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:30,468 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:30,469 INFO L545 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:30,476 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:30,477 INFO L545 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:30,597 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2020-10-22 01:09:30,598 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-22 01:09:30,602 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 12 dim-0 vars, and 9 xjuncts. [2020-10-22 01:09:30,603 INFO L244 ElimStorePlain]: Needed 10 recursive calls to eliminate 3 variables, input treesize:388, output treesize:334 [2020-10-22 01:09:30,609 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:09:30,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-22 01:09:30,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:09:30,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-22 01:09:30,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-22 01:09:30,610 INFO L87 Difference]: Start difference. First operand 191 states and 530 transitions. Second operand 9 states. [2020-10-22 01:09:31,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:09:31,172 INFO L93 Difference]: Finished difference Result 415 states and 1147 transitions. [2020-10-22 01:09:31,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-22 01:09:31,172 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-10-22 01:09:31,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:09:31,176 INFO L225 Difference]: With dead ends: 415 [2020-10-22 01:09:31,176 INFO L226 Difference]: Without dead ends: 396 [2020-10-22 01:09:31,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2020-10-22 01:09:31,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2020-10-22 01:09:31,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 193. [2020-10-22 01:09:31,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-22 01:09:31,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 534 transitions. [2020-10-22 01:09:31,207 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 534 transitions. Word has length 20 [2020-10-22 01:09:31,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:09:31,207 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 534 transitions. [2020-10-22 01:09:31,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-22 01:09:31,207 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 534 transitions. [2020-10-22 01:09:31,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-22 01:09:31,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:09:31,209 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] [2020-10-22 01:09:31,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:09:31,425 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-22 01:09:31,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:09:31,425 INFO L82 PathProgramCache]: Analyzing trace with hash 2072690650, now seen corresponding path program 1 times [2020-10-22 01:09:31,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:09:31,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611616833] [2020-10-22 01:09:31,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:09:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:09:31,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:09:31,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611616833] [2020-10-22 01:09:31,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553874734] [2020-10-22 01:09:31,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:09:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:09:31,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 70 conjunts are in the unsatisfiable core [2020-10-22 01:09:31,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:09:31,861 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 226 treesize of output 218 [2020-10-22 01:09:31,863 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-22 01:09:31,946 INFO L625 ElimStorePlain]: treesize reduction 184, result has 20.0 percent of original size [2020-10-22 01:09:31,955 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 [2020-10-22 01:09:31,956 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:31,980 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-22 01:09:31,981 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. [2020-10-22 01:09:31,981 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:51, output treesize:42 [2020-10-22 01:09:32,112 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-22 01:09:32,113 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 [2020-10-22 01:09:32,114 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:32,181 INFO L625 ElimStorePlain]: treesize reduction 16, result has 78.9 percent of original size [2020-10-22 01:09:32,186 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:09:32,188 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. [2020-10-22 01:09:32,188 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:56, output treesize:60 [2020-10-22 01:09:32,190 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:09:32,239 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:09:33,042 WARN L193 SmtUtils]: Spent 767.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2020-10-22 01:09:33,471 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:09:33,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:09:33,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 18 [2020-10-22 01:09:33,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [292015164] [2020-10-22 01:09:33,473 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:09:33,478 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:09:33,501 INFO L252 McrAutomatonBuilder]: Finished intersection with 71 states and 129 transitions. [2020-10-22 01:09:33,502 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:09:34,796 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:09:34,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 01:09:34,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:09:34,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 01:09:34,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-10-22 01:09:34,797 INFO L87 Difference]: Start difference. First operand 193 states and 534 transitions. Second operand 10 states. [2020-10-22 01:09:37,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:09:37,637 INFO L93 Difference]: Finished difference Result 317 states and 868 transitions. [2020-10-22 01:09:37,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-22 01:09:37,637 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-10-22 01:09:37,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:09:37,638 INFO L225 Difference]: With dead ends: 317 [2020-10-22 01:09:37,638 INFO L226 Difference]: Without dead ends: 74 [2020-10-22 01:09:37,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=144, Invalid=609, Unknown=3, NotChecked=0, Total=756 [2020-10-22 01:09:37,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-22 01:09:37,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 70. [2020-10-22 01:09:37,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-22 01:09:37,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 149 transitions. [2020-10-22 01:09:37,642 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 149 transitions. Word has length 22 [2020-10-22 01:09:37,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:09:37,643 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 149 transitions. [2020-10-22 01:09:37,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 01:09:37,643 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 149 transitions. [2020-10-22 01:09:37,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-22 01:09:37,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 01:09:37,644 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] [2020-10-22 01:09:37,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:09:37,845 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-22 01:09:37,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 01:09:37,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1587846356, now seen corresponding path program 2 times [2020-10-22 01:09:37,848 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 01:09:37,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558206916] [2020-10-22 01:09:37,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 01:09:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 01:09:38,054 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:09:38,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558206916] [2020-10-22 01:09:38,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750684454] [2020-10-22 01:09:38,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:09:38,126 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-22 01:09:38,126 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-22 01:09:38,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 62 conjunts are in the unsatisfiable core [2020-10-22 01:09:38,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-22 01:09:38,149 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-22 01:09:38,150 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 34 [2020-10-22 01:09:38,151 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:38,189 INFO L625 ElimStorePlain]: treesize reduction 16, result has 67.3 percent of original size [2020-10-22 01:09:38,189 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-22 01:09:38,190 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:37, output treesize:33 [2020-10-22 01:09:38,505 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-22 01:09:38,506 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 113 [2020-10-22 01:09:38,507 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:38,569 INFO L625 ElimStorePlain]: treesize reduction 70, result has 40.2 percent of original size [2020-10-22 01:09:38,571 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:09:38,572 INFO L545 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-10-22 01:09:38,573 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:45, output treesize:47 [2020-10-22 01:09:38,574 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:09:39,791 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:09:40,728 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:09:41,632 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:09:42,523 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:09:44,028 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-22 01:09:44,966 WARN L193 SmtUtils]: Spent 890.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-10-22 01:09:45,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 01:09:45,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-22 01:09:45,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2020-10-22 01:09:45,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1819863258] [2020-10-22 01:09:45,319 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 01:09:45,321 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 01:09:45,331 INFO L252 McrAutomatonBuilder]: Finished intersection with 50 states and 81 transitions. [2020-10-22 01:09:45,331 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 01:09:45,509 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-10-22 01:09:45,510 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 01:09:45,535 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:45,536 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:45,540 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:45,549 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:45,554 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:45,559 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:45,564 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:45,565 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:45,570 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:45,571 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:45,575 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:45,576 INFO L545 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:45,656 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-22 01:09:45,659 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 9 dim-0 vars, and 6 xjuncts. [2020-10-22 01:09:45,659 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:277, output treesize:241 [2020-10-22 01:09:45,789 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-10-22 01:09:45,790 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 01:09:45,809 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:45,810 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:45,815 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:45,816 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:45,821 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:45,827 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:45,832 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:45,833 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:45,839 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:45,839 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:45,844 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:45,845 INFO L545 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:45,933 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-22 01:09:45,936 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 9 dim-0 vars, and 6 xjuncts. [2020-10-22 01:09:45,936 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:277, output treesize:241 [2020-10-22 01:09:46,020 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-10-22 01:09:46,021 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-22 01:09:46,037 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:46,040 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:46,045 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:46,045 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:46,051 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:46,053 INFO L545 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:46,058 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:46,059 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:46,065 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:46,065 INFO L545 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:46,070 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2020-10-22 01:09:46,070 INFO L545 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-10-22 01:09:46,153 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-22 01:09:46,156 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 9 dim-0 vars, and 6 xjuncts. [2020-10-22 01:09:46,156 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 3 variables, input treesize:277, output treesize:241 [2020-10-22 01:09:46,172 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 01:09:46,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-22 01:09:46,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 01:09:46,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-22 01:09:46,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=264, Unknown=1, NotChecked=0, Total=306 [2020-10-22 01:09:46,173 INFO L87 Difference]: Start difference. First operand 70 states and 149 transitions. Second operand 10 states. [2020-10-22 01:09:46,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 01:09:46,835 INFO L93 Difference]: Finished difference Result 95 states and 209 transitions. [2020-10-22 01:09:46,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-22 01:09:46,835 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-10-22 01:09:46,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 01:09:46,836 INFO L225 Difference]: With dead ends: 95 [2020-10-22 01:09:46,836 INFO L226 Difference]: Without dead ends: 0 [2020-10-22 01:09:46,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 26 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=133, Invalid=622, Unknown=1, NotChecked=0, Total=756 [2020-10-22 01:09:46,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-22 01:09:46,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-22 01:09:46,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-22 01:09:46,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-22 01:09:46,839 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-10-22 01:09:46,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 01:09:46,839 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-22 01:09:46,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-22 01:09:46,839 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-22 01:09:46,839 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-22 01:09:47,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-22 01:09:47,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 01:09:47 BasicIcfg [2020-10-22 01:09:47,046 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 01:09:47,047 INFO L168 Benchmark]: Toolchain (without parser) took 40223.36 ms. Allocated memory was 141.0 MB in the beginning and 402.7 MB in the end (delta: 261.6 MB). Free memory was 102.2 MB in the beginning and 118.5 MB in the end (delta: -16.3 MB). Peak memory consumption was 245.3 MB. Max. memory is 7.1 GB. [2020-10-22 01:09:47,048 INFO L168 Benchmark]: CDTParser took 3.02 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-10-22 01:09:47,049 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.07 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 101.2 MB in the beginning and 180.0 MB in the end (delta: -78.9 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-10-22 01:09:47,053 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.19 ms. Allocated memory is still 204.5 MB. Free memory was 180.0 MB in the beginning and 178.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-22 01:09:47,053 INFO L168 Benchmark]: Boogie Preprocessor took 27.17 ms. Allocated memory is still 204.5 MB. Free memory was 178.0 MB in the beginning and 176.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-22 01:09:47,054 INFO L168 Benchmark]: RCFGBuilder took 491.17 ms. Allocated memory is still 204.5 MB. Free memory was 176.7 MB in the beginning and 150.3 MB in the end (delta: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-10-22 01:09:47,054 INFO L168 Benchmark]: TraceAbstraction took 39289.24 ms. Allocated memory was 204.5 MB in the beginning and 402.7 MB in the end (delta: 198.2 MB). Free memory was 149.7 MB in the beginning and 118.5 MB in the end (delta: 31.2 MB). Peak memory consumption was 229.4 MB. Max. memory is 7.1 GB. [2020-10-22 01:09:47,061 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.02 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 368.07 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 101.2 MB in the beginning and 180.0 MB in the end (delta: -78.9 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 37.19 ms. Allocated memory is still 204.5 MB. Free memory was 180.0 MB in the beginning and 178.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.17 ms. Allocated memory is still 204.5 MB. Free memory was 178.0 MB in the beginning and 176.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 491.17 ms. Allocated memory is still 204.5 MB. Free memory was 176.7 MB in the beginning and 150.3 MB in the end (delta: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 39289.24 ms. Allocated memory was 204.5 MB in the beginning and 402.7 MB in the end (delta: 198.2 MB). Free memory was 149.7 MB in the beginning and 118.5 MB in the end (delta: 31.2 MB). Peak memory consumption was 229.4 MB. 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: 4.1s, 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: 39.0s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 13.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 231 SDtfs, 773 SDslu, 555 SDs, 0 SdLazy, 2196 SolverSat, 111 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 473 GetRequests, 299 SyntacticMatches, 13 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 21.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=193occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 520 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 12.6s InterpolantComputationTime, 258 NumberOfCodeBlocks, 258 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 245 ConstructedInterpolants, 72 QuantifiedInterpolants, 107715 SizeOfPredicates, 106 NumberOfNonLiveVariables, 820 ConjunctsInSsa, 264 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 1/23 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...