/usr/bin/java -Xmx16000000000 -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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/concurrent/pthreads/distributed_search2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-11af1e5 [2020-10-11 16:10:18,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-11 16:10:18,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-11 16:10:18,805 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-11 16:10:18,805 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-11 16:10:18,813 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-11 16:10:18,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-11 16:10:18,820 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-11 16:10:18,823 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-11 16:10:18,826 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-11 16:10:18,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-11 16:10:18,828 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-11 16:10:18,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-11 16:10:18,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-11 16:10:18,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-11 16:10:18,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-11 16:10:18,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-11 16:10:18,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-11 16:10:18,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-11 16:10:18,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-11 16:10:18,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-11 16:10:18,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-11 16:10:18,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-11 16:10:18,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-11 16:10:18,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-11 16:10:18,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-11 16:10:18,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-11 16:10:18,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-11 16:10:18,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-11 16:10:18,870 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-11 16:10:18,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-11 16:10:18,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-11 16:10:18,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-11 16:10:18,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-11 16:10:18,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-11 16:10:18,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-11 16:10:18,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-11 16:10:18,877 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-11 16:10:18,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-11 16:10:18,881 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-11 16:10:18,882 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-11 16:10:18,883 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-11 16:10:18,923 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-11 16:10:18,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-11 16:10:18,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-11 16:10:18,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-11 16:10:18,925 INFO L138 SettingsManager]: * Use SBE=true [2020-10-11 16:10:18,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-11 16:10:18,926 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-11 16:10:18,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-11 16:10:18,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-11 16:10:18,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-11 16:10:18,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-11 16:10:18,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-11 16:10:18,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-11 16:10:18,928 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-11 16:10:18,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-11 16:10:18,928 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-11 16:10:18,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-11 16:10:18,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-11 16:10:18,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-11 16:10:18,929 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-11 16:10:18,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-11 16:10:18,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-11 16:10:18,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-11 16:10:18,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-11 16:10:18,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-11 16:10:18,931 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-11 16:10:18,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-11 16:10:18,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-11 16:10:18,931 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-11 16:10:18,931 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-11 16:10:19,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-11 16:10:19,240 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-11 16:10:19,244 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-11 16:10:19,245 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-11 16:10:19,246 INFO L275 PluginConnector]: CDTParser initialized [2020-10-11 16:10:19,246 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/distributed_search2.c [2020-10-11 16:10:19,306 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38fc86c41/b1b6f3468dc7430986caeac9600188eb/FLAG04c6140e7 [2020-10-11 16:10:19,770 INFO L306 CDTParser]: Found 1 translation units. [2020-10-11 16:10:19,771 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/distributed_search2.c [2020-10-11 16:10:19,771 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-11 16:10:19,771 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-11 16:10:19,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38fc86c41/b1b6f3468dc7430986caeac9600188eb/FLAG04c6140e7 [2020-10-11 16:10:20,140 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38fc86c41/b1b6f3468dc7430986caeac9600188eb [2020-10-11 16:10:20,151 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-11 16:10:20,153 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-11 16:10:20,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-11 16:10:20,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-11 16:10:20,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-11 16:10:20,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:10:20" (1/1) ... [2020-10-11 16:10:20,162 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b759934 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:10:20, skipping insertion in model container [2020-10-11 16:10:20,162 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 04:10:20" (1/1) ... [2020-10-11 16:10:20,170 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-11 16:10:20,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-11 16:10:20,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 16:10:20,482 INFO L203 MainTranslator]: Completed pre-run [2020-10-11 16:10:20,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-11 16:10:20,520 INFO L208 MainTranslator]: Completed translation [2020-10-11 16:10:20,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:10:20 WrapperNode [2020-10-11 16:10:20,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-11 16:10:20,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-11 16:10:20,522 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-11 16:10:20,522 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-11 16:10:20,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:10:20" (1/1) ... [2020-10-11 16:10:20,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:10:20" (1/1) ... [2020-10-11 16:10:20,563 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-11 16:10:20,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-11 16:10:20,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-11 16:10:20,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-11 16:10:20,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:10:20" (1/1) ... [2020-10-11 16:10:20,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:10:20" (1/1) ... [2020-10-11 16:10:20,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:10:20" (1/1) ... [2020-10-11 16:10:20,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:10:20" (1/1) ... [2020-10-11 16:10:20,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:10:20" (1/1) ... [2020-10-11 16:10:20,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:10:20" (1/1) ... [2020-10-11 16:10:20,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:10:20" (1/1) ... [2020-10-11 16:10:20,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-11 16:10:20,595 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-11 16:10:20,595 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-11 16:10:20,595 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-11 16:10:20,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:10:20" (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 [2020-10-11 16:10:20,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-11 16:10:20,670 INFO L130 BoogieDeclarations]: Found specification of procedure search_worker [2020-10-11 16:10:20,670 INFO L138 BoogieDeclarations]: Found implementation of procedure search_worker [2020-10-11 16:10:20,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-11 16:10:20,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-11 16:10:20,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-11 16:10:20,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-11 16:10:20,672 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-11 16:10:20,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-11 16:10:20,674 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-11 16:10:21,066 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-11 16:10:21,067 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-11 16:10:21,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:10:21 BoogieIcfgContainer [2020-10-11 16:10:21,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-11 16:10:21,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-11 16:10:21,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-11 16:10:21,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-11 16:10:21,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 04:10:20" (1/3) ... [2020-10-11 16:10:21,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bdc1167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:10:21, skipping insertion in model container [2020-10-11 16:10:21,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 04:10:20" (2/3) ... [2020-10-11 16:10:21,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bdc1167 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 04:10:21, skipping insertion in model container [2020-10-11 16:10:21,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 04:10:21" (3/3) ... [2020-10-11 16:10:21,079 INFO L111 eAbstractionObserver]: Analyzing ICFG distributed_search2.c [2020-10-11 16:10:21,090 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-11 16:10:21,091 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-11 16:10:21,098 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-11 16:10:21,099 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-11 16:10:21,136 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#in~params.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,136 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#in~params.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,136 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,137 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,137 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,137 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,138 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,138 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,138 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,138 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,138 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,139 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,139 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,148 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,151 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,152 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,152 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,152 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,152 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,153 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,153 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,153 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,153 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,154 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,154 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,154 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,154 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,155 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,155 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,155 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,156 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,156 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,161 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,162 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,162 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,162 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,163 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,163 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,163 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,163 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,164 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#in~params.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,164 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#in~params.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,164 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,165 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,165 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,168 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,168 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,169 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,169 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,169 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,169 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,171 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,171 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,173 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,174 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,174 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,174 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,174 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,174 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,175 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,175 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,175 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,175 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,175 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,176 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,178 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,181 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,181 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,182 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,182 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,182 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,183 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,183 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,183 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,183 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,183 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,184 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,184 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,184 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,184 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,193 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,194 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,194 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,194 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,195 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,195 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,196 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,196 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,196 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,196 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,196 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,197 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,197 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,211 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,211 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,211 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,212 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,212 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,213 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,213 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,213 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,213 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,213 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,214 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,214 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,214 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-11 16:10:21,251 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-11 16:10:21,274 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-11 16:10:21,283 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-11 16:10:21,284 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-11 16:10:21,284 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-11 16:10:21,284 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-11 16:10:21,285 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-11 16:10:21,285 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-11 16:10:21,285 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-11 16:10:21,313 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-11 16:10:21,316 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 138 transitions, 298 flow [2020-10-11 16:10:21,318 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 138 transitions, 298 flow [2020-10-11 16:10:21,320 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 135 places, 138 transitions, 298 flow [2020-10-11 16:10:21,401 INFO L129 PetriNetUnfolder]: 9/138 cut-off events. [2020-10-11 16:10:21,401 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-11 16:10:21,408 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. [2020-10-11 16:10:21,412 INFO L117 LiptonReduction]: Number of co-enabled transitions 1920 [2020-10-11 16:10:23,589 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-11 16:10:23,705 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-11 16:10:24,487 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-11 16:10:24,495 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 11, 1] term [2020-10-11 16:10:24,495 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 16:10:25,053 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 119 [2020-10-11 16:10:25,245 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-11 16:10:25,496 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-11 16:10:25,714 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-11 16:10:25,722 INFO L132 LiptonReduction]: Checked pairs total: 4040 [2020-10-11 16:10:25,723 INFO L134 LiptonReduction]: Total number of compositions: 125 [2020-10-11 16:10:25,730 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 30 transitions, 82 flow [2020-10-11 16:10:25,745 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 126 states. [2020-10-11 16:10:25,747 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states. [2020-10-11 16:10:25,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-11 16:10:25,757 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:25,757 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:25,758 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:10:25,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:25,763 INFO L82 PathProgramCache]: Analyzing trace with hash -878946956, now seen corresponding path program 1 times [2020-10-11 16:10:25,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:25,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179468323] [2020-10-11 16:10:25,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:25,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:26,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:26,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179468323] [2020-10-11 16:10:26,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:10:26,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-11 16:10:26,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619221907] [2020-10-11 16:10:26,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-11 16:10:26,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:26,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-11 16:10:26,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-11 16:10:26,025 INFO L87 Difference]: Start difference. First operand 126 states. Second operand 5 states. [2020-10-11 16:10:26,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:26,155 INFO L93 Difference]: Finished difference Result 126 states and 313 transitions. [2020-10-11 16:10:26,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-11 16:10:26,158 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-11 16:10:26,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:26,173 INFO L225 Difference]: With dead ends: 126 [2020-10-11 16:10:26,173 INFO L226 Difference]: Without dead ends: 104 [2020-10-11 16:10:26,175 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-11 16:10:26,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-11 16:10:26,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-11 16:10:26,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-11 16:10:26,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 267 transitions. [2020-10-11 16:10:26,225 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 267 transitions. Word has length 16 [2020-10-11 16:10:26,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:26,226 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 267 transitions. [2020-10-11 16:10:26,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-11 16:10:26,226 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 267 transitions. [2020-10-11 16:10:26,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-11 16:10:26,228 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:26,228 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:26,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-11 16:10:26,229 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:10:26,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:26,229 INFO L82 PathProgramCache]: Analyzing trace with hash 351436872, now seen corresponding path program 1 times [2020-10-11 16:10:26,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:26,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637766176] [2020-10-11 16:10:26,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:26,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:26,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637766176] [2020-10-11 16:10:26,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:10:26,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-11 16:10:26,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931138402] [2020-10-11 16:10:26,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-11 16:10:26,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:26,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-11 16:10:26,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 16:10:26,451 INFO L87 Difference]: Start difference. First operand 104 states and 267 transitions. Second operand 3 states. [2020-10-11 16:10:26,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:26,486 INFO L93 Difference]: Finished difference Result 170 states and 444 transitions. [2020-10-11 16:10:26,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-11 16:10:26,486 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-11 16:10:26,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:26,489 INFO L225 Difference]: With dead ends: 170 [2020-10-11 16:10:26,489 INFO L226 Difference]: Without dead ends: 163 [2020-10-11 16:10:26,490 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-11 16:10:26,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-11 16:10:26,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 140. [2020-10-11 16:10:26,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-11 16:10:26,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 372 transitions. [2020-10-11 16:10:26,509 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 372 transitions. Word has length 16 [2020-10-11 16:10:26,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:26,509 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 372 transitions. [2020-10-11 16:10:26,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-11 16:10:26,510 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 372 transitions. [2020-10-11 16:10:26,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-11 16:10:26,512 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:26,512 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:26,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-11 16:10:26,512 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:10:26,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:26,513 INFO L82 PathProgramCache]: Analyzing trace with hash 443469900, now seen corresponding path program 1 times [2020-10-11 16:10:26,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:26,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843404504] [2020-10-11 16:10:26,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:26,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:26,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843404504] [2020-10-11 16:10:26,739 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676944226] [2020-10-11 16:10:26,739 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 [2020-10-11 16:10:26,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:26,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-11 16:10:26,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:10:26,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:26,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:10:26,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2020-10-11 16:10:26,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396495484] [2020-10-11 16:10:26,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-11 16:10:26,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:26,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-11 16:10:26,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-11 16:10:26,902 INFO L87 Difference]: Start difference. First operand 140 states and 372 transitions. Second operand 8 states. [2020-10-11 16:10:27,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:27,107 INFO L93 Difference]: Finished difference Result 202 states and 539 transitions. [2020-10-11 16:10:27,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-11 16:10:27,108 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-11 16:10:27,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:27,110 INFO L225 Difference]: With dead ends: 202 [2020-10-11 16:10:27,111 INFO L226 Difference]: Without dead ends: 158 [2020-10-11 16:10:27,111 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-11 16:10:27,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-11 16:10:27,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 110. [2020-10-11 16:10:27,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-11 16:10:27,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 290 transitions. [2020-10-11 16:10:27,122 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 290 transitions. Word has length 19 [2020-10-11 16:10:27,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:27,122 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 290 transitions. [2020-10-11 16:10:27,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-11 16:10:27,123 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 290 transitions. [2020-10-11 16:10:27,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-11 16:10:27,124 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:27,124 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:27,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-11 16:10:27,338 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:10:27,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:27,339 INFO L82 PathProgramCache]: Analyzing trace with hash -799546606, now seen corresponding path program 1 times [2020-10-11 16:10:27,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:27,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817639001] [2020-10-11 16:10:27,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:28,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:28,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817639001] [2020-10-11 16:10:28,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:10:28,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-11 16:10:28,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544594958] [2020-10-11 16:10:28,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-11 16:10:28,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:28,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-11 16:10:28,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-11 16:10:28,029 INFO L87 Difference]: Start difference. First operand 110 states and 290 transitions. Second operand 10 states. [2020-10-11 16:10:28,272 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-11 16:10:28,495 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2020-10-11 16:10:28,779 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-10-11 16:10:29,120 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2020-10-11 16:10:29,471 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 98 [2020-10-11 16:10:29,794 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103 [2020-10-11 16:10:29,973 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-11 16:10:30,239 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 88 [2020-10-11 16:10:30,595 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 109 [2020-10-11 16:10:30,835 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2020-10-11 16:10:30,986 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-11 16:10:31,373 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-10-11 16:10:31,664 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2020-10-11 16:10:31,923 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-10-11 16:10:32,317 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-11 16:10:32,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:32,426 INFO L93 Difference]: Finished difference Result 305 states and 837 transitions. [2020-10-11 16:10:32,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 16:10:32,426 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-11 16:10:32,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:32,429 INFO L225 Difference]: With dead ends: 305 [2020-10-11 16:10:32,430 INFO L226 Difference]: Without dead ends: 245 [2020-10-11 16:10:32,430 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=220, Invalid=482, Unknown=0, NotChecked=0, Total=702 [2020-10-11 16:10:32,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-11 16:10:32,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 110. [2020-10-11 16:10:32,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-11 16:10:32,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 288 transitions. [2020-10-11 16:10:32,441 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 288 transitions. Word has length 20 [2020-10-11 16:10:32,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:32,441 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 288 transitions. [2020-10-11 16:10:32,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-11 16:10:32,442 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 288 transitions. [2020-10-11 16:10:32,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-11 16:10:32,443 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:32,443 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:32,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-11 16:10:32,444 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:10:32,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:32,444 INFO L82 PathProgramCache]: Analyzing trace with hash -323380434, now seen corresponding path program 2 times [2020-10-11 16:10:32,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:32,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504814835] [2020-10-11 16:10:32,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:32,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:32,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504814835] [2020-10-11 16:10:32,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:10:32,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-11 16:10:32,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605752846] [2020-10-11 16:10:32,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-11 16:10:33,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:33,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-11 16:10:33,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-11 16:10:33,002 INFO L87 Difference]: Start difference. First operand 110 states and 288 transitions. Second operand 10 states. [2020-10-11 16:10:33,243 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-11 16:10:33,462 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2020-10-11 16:10:33,753 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-10-11 16:10:34,128 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 101 [2020-10-11 16:10:34,552 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 109 [2020-10-11 16:10:35,071 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 115 [2020-10-11 16:10:35,378 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 96 [2020-10-11 16:10:35,584 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2020-10-11 16:10:35,854 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2020-10-11 16:10:36,167 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2020-10-11 16:10:36,604 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 108 [2020-10-11 16:10:37,072 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 91 [2020-10-11 16:10:37,393 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-10-11 16:10:37,724 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-11 16:10:38,077 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-11 16:10:38,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:38,155 INFO L93 Difference]: Finished difference Result 414 states and 1136 transitions. [2020-10-11 16:10:38,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-11 16:10:38,155 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-11 16:10:38,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:38,159 INFO L225 Difference]: With dead ends: 414 [2020-10-11 16:10:38,159 INFO L226 Difference]: Without dead ends: 382 [2020-10-11 16:10:38,160 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2020-10-11 16:10:38,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-10-11 16:10:38,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 116. [2020-10-11 16:10:38,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-11 16:10:38,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 301 transitions. [2020-10-11 16:10:38,171 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 301 transitions. Word has length 20 [2020-10-11 16:10:38,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:38,171 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 301 transitions. [2020-10-11 16:10:38,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-11 16:10:38,171 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 301 transitions. [2020-10-11 16:10:38,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-11 16:10:38,173 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:38,173 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:38,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-11 16:10:38,173 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:10:38,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:38,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1380507504, now seen corresponding path program 3 times [2020-10-11 16:10:38,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:38,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245281378] [2020-10-11 16:10:38,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:38,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:38,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245281378] [2020-10-11 16:10:38,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:10:38,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-11 16:10:38,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487260776] [2020-10-11 16:10:38,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-11 16:10:38,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:38,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-11 16:10:38,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-11 16:10:38,770 INFO L87 Difference]: Start difference. First operand 116 states and 301 transitions. Second operand 10 states. [2020-10-11 16:10:39,031 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-11 16:10:39,267 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2020-10-11 16:10:39,537 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-10-11 16:10:39,912 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 101 [2020-10-11 16:10:40,380 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 115 [2020-10-11 16:10:40,970 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 123 [2020-10-11 16:10:41,273 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 96 [2020-10-11 16:10:41,491 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2020-10-11 16:10:41,774 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2020-10-11 16:10:42,231 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-10-11 16:10:42,753 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 106 [2020-10-11 16:10:43,183 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 113 [2020-10-11 16:10:43,463 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-10-11 16:10:43,600 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-11 16:10:43,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:43,666 INFO L93 Difference]: Finished difference Result 320 states and 886 transitions. [2020-10-11 16:10:43,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-11 16:10:43,667 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-11 16:10:43,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:43,671 INFO L225 Difference]: With dead ends: 320 [2020-10-11 16:10:43,671 INFO L226 Difference]: Without dead ends: 318 [2020-10-11 16:10:43,671 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2020-10-11 16:10:43,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-11 16:10:43,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 118. [2020-10-11 16:10:43,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-11 16:10:43,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 308 transitions. [2020-10-11 16:10:43,680 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 308 transitions. Word has length 20 [2020-10-11 16:10:43,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:43,685 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 308 transitions. [2020-10-11 16:10:43,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-11 16:10:43,685 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 308 transitions. [2020-10-11 16:10:43,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-11 16:10:43,687 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:43,690 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:43,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-11 16:10:43,690 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:10:43,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:43,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1947007856, now seen corresponding path program 4 times [2020-10-11 16:10:43,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:43,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447416499] [2020-10-11 16:10:43,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:44,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:44,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447416499] [2020-10-11 16:10:44,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-11 16:10:44,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-11 16:10:44,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399979039] [2020-10-11 16:10:44,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-11 16:10:44,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:44,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-11 16:10:44,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-11 16:10:44,265 INFO L87 Difference]: Start difference. First operand 118 states and 308 transitions. Second operand 10 states. [2020-10-11 16:10:44,533 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-11 16:10:44,754 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2020-10-11 16:10:45,044 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-10-11 16:10:45,342 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2020-10-11 16:10:45,686 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 101 [2020-10-11 16:10:45,959 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-11 16:10:46,279 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 97 [2020-10-11 16:10:46,719 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 115 [2020-10-11 16:10:47,115 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 103 [2020-10-11 16:10:47,584 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-11 16:10:47,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:47,697 INFO L93 Difference]: Finished difference Result 278 states and 749 transitions. [2020-10-11 16:10:47,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-11 16:10:47,698 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-11 16:10:47,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:47,700 INFO L225 Difference]: With dead ends: 278 [2020-10-11 16:10:47,700 INFO L226 Difference]: Without dead ends: 278 [2020-10-11 16:10:47,701 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2020-10-11 16:10:47,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-11 16:10:47,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 122. [2020-10-11 16:10:47,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-11 16:10:47,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 324 transitions. [2020-10-11 16:10:47,713 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 324 transitions. Word has length 20 [2020-10-11 16:10:47,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:47,713 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 324 transitions. [2020-10-11 16:10:47,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-11 16:10:47,713 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 324 transitions. [2020-10-11 16:10:47,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-11 16:10:47,714 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:47,714 INFO L421 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:47,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-11 16:10:47,715 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:10:47,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:47,716 INFO L82 PathProgramCache]: Analyzing trace with hash -598861718, now seen corresponding path program 5 times [2020-10-11 16:10:47,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:47,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416818511] [2020-10-11 16:10:47,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:48,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:48,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416818511] [2020-10-11 16:10:48,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539966728] [2020-10-11 16:10:48,050 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-11 16:10:48,142 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 16:10:48,142 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:10:48,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 67 conjunts are in the unsatisfiable core [2020-10-11 16:10:48,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:10:48,237 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 16:10:48,238 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 75 [2020-10-11 16:10:48,243 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 1] term [2020-10-11 16:10:48,243 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 16:10:48,246 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 16:10:48,247 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 16:10:48,260 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-11 16:10:48,361 INFO L625 ElimStorePlain]: treesize reduction 97, result has 37.0 percent of original size [2020-10-11 16:10:48,375 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 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 [2020-10-11 16:10:48,376 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-11 16:10:48,406 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 16:10:48,406 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-11 16:10:48,407 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:68, output treesize:53 [2020-10-11 16:10:48,535 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2020-10-11 16:10:48,536 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 16:10:48,564 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 16:10:48,568 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. [2020-10-11 16:10:48,568 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:64, output treesize:60 [2020-10-11 16:10:49,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:49,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:10:49,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2020-10-11 16:10:49,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960952840] [2020-10-11 16:10:49,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-11 16:10:49,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:49,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-11 16:10:49,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-11 16:10:49,175 INFO L87 Difference]: Start difference. First operand 122 states and 324 transitions. Second operand 17 states. [2020-10-11 16:10:49,711 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-10-11 16:10:50,074 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-11 16:10:50,468 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-11 16:10:50,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:50,833 INFO L93 Difference]: Finished difference Result 243 states and 654 transitions. [2020-10-11 16:10:50,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-11 16:10:50,833 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20 [2020-10-11 16:10:50,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:50,835 INFO L225 Difference]: With dead ends: 243 [2020-10-11 16:10:50,835 INFO L226 Difference]: Without dead ends: 224 [2020-10-11 16:10:50,836 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2020-10-11 16:10:50,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-11 16:10:50,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 176. [2020-10-11 16:10:50,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-11 16:10:50,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 481 transitions. [2020-10-11 16:10:50,843 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 481 transitions. Word has length 20 [2020-10-11 16:10:50,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:50,844 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 481 transitions. [2020-10-11 16:10:50,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-11 16:10:50,844 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 481 transitions. [2020-10-11 16:10:50,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-11 16:10:50,845 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:50,845 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:51,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:10:51,059 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:10:51,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:51,060 INFO L82 PathProgramCache]: Analyzing trace with hash 2072690650, now seen corresponding path program 1 times [2020-10-11 16:10:51,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:51,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340356961] [2020-10-11 16:10:51,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:51,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:51,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340356961] [2020-10-11 16:10:51,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120490414] [2020-10-11 16:10:51,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-11 16:10:51,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:51,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2020-10-11 16:10:51,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:10:51,588 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 16:10:51,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:10:51,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3] total 11 [2020-10-11 16:10:51,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10508608] [2020-10-11 16:10:51,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-11 16:10:51,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:51,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-11 16:10:51,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-11 16:10:51,591 INFO L87 Difference]: Start difference. First operand 176 states and 481 transitions. Second operand 13 states. [2020-10-11 16:10:52,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:52,771 INFO L93 Difference]: Finished difference Result 491 states and 1335 transitions. [2020-10-11 16:10:52,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-11 16:10:52,772 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 22 [2020-10-11 16:10:52,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:52,773 INFO L225 Difference]: With dead ends: 491 [2020-10-11 16:10:52,773 INFO L226 Difference]: Without dead ends: 109 [2020-10-11 16:10:52,774 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=203, Invalid=499, Unknown=0, NotChecked=0, Total=702 [2020-10-11 16:10:52,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-11 16:10:52,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 70. [2020-10-11 16:10:52,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-11 16:10:52,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 149 transitions. [2020-10-11 16:10:52,777 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 149 transitions. Word has length 22 [2020-10-11 16:10:52,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:52,777 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 149 transitions. [2020-10-11 16:10:52,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-11 16:10:52,777 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 149 transitions. [2020-10-11 16:10:52,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-11 16:10:52,778 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:52,778 INFO L421 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:52,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:10:52,982 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:10:52,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:52,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1587846356, now seen corresponding path program 2 times [2020-10-11 16:10:52,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:52,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479346571] [2020-10-11 16:10:52,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:53,263 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:53,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479346571] [2020-10-11 16:10:53,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960536025] [2020-10-11 16:10:53,264 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 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 [2020-10-11 16:10:53,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-11 16:10:53,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:10:53,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 33 conjunts are in the unsatisfiable core [2020-10-11 16:10:53,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:10:53,364 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 43 [2020-10-11 16:10:53,365 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 16:10:53,409 INFO L625 ElimStorePlain]: treesize reduction 31, result has 36.7 percent of original size [2020-10-11 16:10:53,410 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-11 16:10:53,411 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:14 [2020-10-11 16:10:53,481 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 [2020-10-11 16:10:53,482 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 16:10:53,491 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 16:10:53,493 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. [2020-10-11 16:10:53,493 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:23 [2020-10-11 16:10:53,600 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-11 16:10:53,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:10:53,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 12 [2020-10-11 16:10:53,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761479023] [2020-10-11 16:10:53,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-11 16:10:53,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:53,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-11 16:10:53,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-11 16:10:53,608 INFO L87 Difference]: Start difference. First operand 70 states and 149 transitions. Second operand 14 states. [2020-10-11 16:10:54,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:54,970 INFO L93 Difference]: Finished difference Result 187 states and 417 transitions. [2020-10-11 16:10:54,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-11 16:10:54,970 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 22 [2020-10-11 16:10:54,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:54,971 INFO L225 Difference]: With dead ends: 187 [2020-10-11 16:10:54,971 INFO L226 Difference]: Without dead ends: 56 [2020-10-11 16:10:54,972 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2020-10-11 16:10:54,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-11 16:10:54,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-10-11 16:10:54,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-11 16:10:54,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 98 transitions. [2020-10-11 16:10:54,975 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 98 transitions. Word has length 22 [2020-10-11 16:10:54,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:54,976 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 98 transitions. [2020-10-11 16:10:54,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-11 16:10:54,976 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 98 transitions. [2020-10-11 16:10:54,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-11 16:10:54,977 INFO L413 BasicCegarLoop]: Found error trace [2020-10-11 16:10:54,977 INFO L421 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-11 16:10:55,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-11 16:10:55,182 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-11 16:10:55,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-11 16:10:55,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1188207356, now seen corresponding path program 3 times [2020-10-11 16:10:55,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-11 16:10:55,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481028261] [2020-10-11 16:10:55,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-11 16:10:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-11 16:10:55,538 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-11 16:10:55,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481028261] [2020-10-11 16:10:55,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544489735] [2020-10-11 16:10:55,539 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 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 [2020-10-11 16:10:55,610 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-11 16:10:55,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-11 16:10:55,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 34 conjunts are in the unsatisfiable core [2020-10-11 16:10:55,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-11 16:10:55,631 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 16:10:55,632 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 72 [2020-10-11 16:10:55,633 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 16:10:55,635 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-11 16:10:55,635 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 16:10:55,637 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-11 16:10:55,639 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 16:10:55,689 INFO L625 ElimStorePlain]: treesize reduction 139, result has 13.7 percent of original size [2020-10-11 16:10:55,690 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-11 16:10:55,690 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:14 [2020-10-11 16:10:55,772 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 [2020-10-11 16:10:55,773 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-11 16:10:55,780 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-11 16:10:55,781 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. [2020-10-11 16:10:55,781 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:23 [2020-10-11 16:10:55,837 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-11 16:10:55,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-11 16:10:55,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 13 [2020-10-11 16:10:55,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804581638] [2020-10-11 16:10:55,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-11 16:10:55,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-11 16:10:55,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-11 16:10:55,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-11 16:10:55,839 INFO L87 Difference]: Start difference. First operand 52 states and 98 transitions. Second operand 15 states. [2020-10-11 16:10:57,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-11 16:10:57,560 INFO L93 Difference]: Finished difference Result 104 states and 197 transitions. [2020-10-11 16:10:57,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-11 16:10:57,561 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 24 [2020-10-11 16:10:57,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-11 16:10:57,562 INFO L225 Difference]: With dead ends: 104 [2020-10-11 16:10:57,562 INFO L226 Difference]: Without dead ends: 0 [2020-10-11 16:10:57,563 INFO L673 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=244, Invalid=878, Unknown=0, NotChecked=0, Total=1122 [2020-10-11 16:10:57,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-11 16:10:57,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-11 16:10:57,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-11 16:10:57,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-11 16:10:57,565 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-10-11 16:10:57,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-11 16:10:57,565 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-11 16:10:57,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-11 16:10:57,565 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-11 16:10:57,565 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-11 16:10:57,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-11 16:10:57,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 04:10:57 BasicIcfg [2020-10-11 16:10:57,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-11 16:10:57,771 INFO L168 Benchmark]: Toolchain (without parser) took 37619.34 ms. Allocated memory was 252.2 MB in the beginning and 579.9 MB in the end (delta: 327.7 MB). Free memory was 206.6 MB in the beginning and 378.8 MB in the end (delta: -172.2 MB). Peak memory consumption was 155.5 MB. Max. memory is 14.2 GB. [2020-10-11 16:10:57,772 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 252.2 MB. Free memory is still 228.6 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 16:10:57,772 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.83 ms. Allocated memory was 252.2 MB in the beginning and 315.1 MB in the end (delta: 62.9 MB). Free memory was 206.6 MB in the beginning and 286.7 MB in the end (delta: -80.1 MB). Peak memory consumption was 24.2 MB. Max. memory is 14.2 GB. [2020-10-11 16:10:57,773 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.24 ms. Allocated memory is still 315.1 MB. Free memory was 286.7 MB in the beginning and 284.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. [2020-10-11 16:10:57,773 INFO L168 Benchmark]: Boogie Preprocessor took 30.39 ms. Allocated memory is still 315.1 MB. Free memory is still 284.2 MB. There was no memory consumed. Max. memory is 14.2 GB. [2020-10-11 16:10:57,774 INFO L168 Benchmark]: RCFGBuilder took 476.12 ms. Allocated memory is still 315.1 MB. Free memory was 284.2 MB in the beginning and 256.5 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 14.2 GB. [2020-10-11 16:10:57,774 INFO L168 Benchmark]: TraceAbstraction took 36698.14 ms. Allocated memory was 315.1 MB in the beginning and 579.9 MB in the end (delta: 264.8 MB). Free memory was 256.5 MB in the beginning and 378.8 MB in the end (delta: -122.3 MB). Peak memory consumption was 142.5 MB. Max. memory is 14.2 GB. [2020-10-11 16:10:57,783 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 252.2 MB. Free memory is still 228.6 MB. There was no memory consumed. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 366.83 ms. Allocated memory was 252.2 MB in the beginning and 315.1 MB in the end (delta: 62.9 MB). Free memory was 206.6 MB in the beginning and 286.7 MB in the end (delta: -80.1 MB). Peak memory consumption was 24.2 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 42.24 ms. Allocated memory is still 315.1 MB. Free memory was 286.7 MB in the beginning and 284.2 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 30.39 ms. Allocated memory is still 315.1 MB. Free memory is still 284.2 MB. There was no memory consumed. Max. memory is 14.2 GB. * RCFGBuilder took 476.12 ms. Allocated memory is still 315.1 MB. Free memory was 284.2 MB in the beginning and 256.5 MB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 14.2 GB. * TraceAbstraction took 36698.14 ms. Allocated memory was 315.1 MB in the beginning and 579.9 MB in the end (delta: 264.8 MB). Free memory was 256.5 MB in the beginning and 378.8 MB in the end (delta: -122.3 MB). Peak memory consumption was 142.5 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1346 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 25 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 122 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.4s, 135 PlacesBefore, 31 PlacesAfterwards, 138 TransitionsBefore, 30 TransitionsAfterwards, 1920 CoEnabledTransitionPairs, 7 FixpointIterations, 70 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 11 ConcurrentYvCompositions, 4 ChoiceCompositions, 125 TotalNumberOfCompositions, 4040 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: 36.4s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 24.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 303 SDtfs, 1726 SDslu, 817 SDs, 0 SdLazy, 2476 SolverSat, 321 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 309 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 22.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=176occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 919 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 326 NumberOfCodeBlocks, 322 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 310 ConstructedInterpolants, 40 QuantifiedInterpolants, 139420 SizeOfPredicates, 73 NumberOfNonLiveVariables, 820 ConjunctsInSsa, 194 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 14/42 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...