/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 23:47:51,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 23:47:51,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 23:47:51,064 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 23:47:51,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 23:47:51,065 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 23:47:51,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 23:47:51,068 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 23:47:51,070 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 23:47:51,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 23:47:51,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 23:47:51,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 23:47:51,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 23:47:51,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 23:47:51,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 23:47:51,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 23:47:51,078 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 23:47:51,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 23:47:51,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 23:47:51,083 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 23:47:51,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 23:47:51,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 23:47:51,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 23:47:51,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 23:47:51,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-05 23:47:51,092 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-05 23:47:51,092 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-05 23:47:51,093 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-05 23:47:51,094 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-05 23:47:51,095 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-05 23:47:51,095 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 23:47:51,096 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 23:47:51,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 23:47:51,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 23:47:51,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 23:47:51,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 23:47:51,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 23:47:51,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 23:47:51,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 23:47:51,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 23:47:51,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 23:47:51,102 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-05 23:47:51,141 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 23:47:51,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 23:47:51,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 23:47:51,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 23:47:51,144 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 23:47:51,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 23:47:51,145 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 23:47:51,145 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 23:47:51,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 23:47:51,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 23:47:51,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 23:47:51,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 23:47:51,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 23:47:51,146 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 23:47:51,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 23:47:51,147 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 23:47:51,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 23:47:51,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 23:47:51,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 23:47:51,149 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 23:47:51,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 23:47:51,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:47:51,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 23:47:51,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-05 23:47:51,150 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 23:47:51,151 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 23:47:51,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 23:47:51,151 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-05 23:47:51,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 23:47:51,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 23:47:51,447 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 23:47:51,450 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 23:47:51,451 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 23:47:51,451 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 23:47:51,453 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2020-10-05 23:47:51,535 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffdee7ed2/5fe3324fba73418984fe7a43f92e1025/FLAG1763d3ad0 [2020-10-05 23:47:52,134 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 23:47:52,135 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-1.i [2020-10-05 23:47:52,158 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffdee7ed2/5fe3324fba73418984fe7a43f92e1025/FLAG1763d3ad0 [2020-10-05 23:47:52,388 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ffdee7ed2/5fe3324fba73418984fe7a43f92e1025 [2020-10-05 23:47:52,395 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 23:47:52,397 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 23:47:52,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 23:47:52,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 23:47:52,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 23:47:52,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:47:52" (1/1) ... [2020-10-05 23:47:52,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb6bf95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:47:52, skipping insertion in model container [2020-10-05 23:47:52,406 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:47:52" (1/1) ... [2020-10-05 23:47:52,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 23:47:52,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 23:47:53,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:47:53,152 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 23:47:53,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:47:53,442 INFO L208 MainTranslator]: Completed translation [2020-10-05 23:47:53,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:47:53 WrapperNode [2020-10-05 23:47:53,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 23:47:53,444 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 23:47:53,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 23:47:53,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 23:47:53,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:47:53" (1/1) ... [2020-10-05 23:47:53,478 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:47:53" (1/1) ... [2020-10-05 23:47:53,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 23:47:53,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 23:47:53,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 23:47:53,508 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 23:47:53,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:47:53" (1/1) ... [2020-10-05 23:47:53,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:47:53" (1/1) ... [2020-10-05 23:47:53,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:47:53" (1/1) ... [2020-10-05 23:47:53,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:47:53" (1/1) ... [2020-10-05 23:47:53,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:47:53" (1/1) ... [2020-10-05 23:47:53,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:47:53" (1/1) ... [2020-10-05 23:47:53,536 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:47:53" (1/1) ... [2020-10-05 23:47:53,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 23:47:53,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 23:47:53,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 23:47:53,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 23:47:53,547 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:47:53" (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 [2020-10-05 23:47:53,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 23:47:53,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 23:47:53,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-05 23:47:53,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 23:47:53,620 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-05 23:47:53,620 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_mutex [2020-10-05 23:47:53,621 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_mutex [2020-10-05 23:47:53,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-05 23:47:53,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 23:47:53,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 23:47:53,623 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 23:47:54,047 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 23:47:54,048 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-05 23:47:54,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:47:54 BoogieIcfgContainer [2020-10-05 23:47:54,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 23:47:54,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 23:47:54,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 23:47:54,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 23:47:54,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 11:47:52" (1/3) ... [2020-10-05 23:47:54,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d486a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:47:54, skipping insertion in model container [2020-10-05 23:47:54,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:47:53" (2/3) ... [2020-10-05 23:47:54,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d486a24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:47:54, skipping insertion in model container [2020-10-05 23:47:54,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:47:54" (3/3) ... [2020-10-05 23:47:54,058 INFO L109 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-1.i [2020-10-05 23:47:54,069 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 23:47:54,069 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-05 23:47:54,077 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 23:47:54,078 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 23:47:54,106 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,107 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,107 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,107 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,108 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,108 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,108 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,108 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,109 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,109 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,109 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,109 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,110 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,110 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,110 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,110 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,111 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,111 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,111 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,111 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,112 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,112 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,112 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,116 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,116 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,116 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,117 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~post30| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,117 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,117 WARN L313 ript$VariableManager]: TermVariabe thread_function_mutexThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,117 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,117 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet31| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,118 WARN L313 ript$VariableManager]: TermVariabe |thread_function_mutexThread1of1ForFork0_#t~nondet32| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:47:54,143 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-10-05 23:47:54,164 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:47:54,165 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:47:54,165 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:47:54,165 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:47:54,165 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:47:54,165 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:47:54,166 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:47:54,166 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:47:54,182 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 81 transitions, 170 flow [2020-10-05 23:47:54,184 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 81 transitions, 170 flow [2020-10-05 23:47:54,229 INFO L129 PetriNetUnfolder]: 7/80 cut-off events. [2020-10-05 23:47:54,230 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-05 23:47:54,235 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 80 events. 7/80 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 79 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2020-10-05 23:47:54,237 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 81 transitions, 170 flow [2020-10-05 23:47:54,258 INFO L129 PetriNetUnfolder]: 7/80 cut-off events. [2020-10-05 23:47:54,259 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2020-10-05 23:47:54,259 INFO L80 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 80 events. 7/80 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 79 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2020-10-05 23:47:54,261 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 646 [2020-10-05 23:47:54,262 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:47:55,936 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2020-10-05 23:47:56,084 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-05 23:47:56,837 WARN L193 SmtUtils]: Spent 748.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 110 [2020-10-05 23:47:57,083 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-05 23:47:57,091 INFO L206 etLargeBlockEncoding]: Checked pairs total: 738 [2020-10-05 23:47:57,091 INFO L214 etLargeBlockEncoding]: Total number of compositions: 70 [2020-10-05 23:47:57,095 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 19 places, 17 transitions, 42 flow [2020-10-05 23:47:57,105 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 35 states. [2020-10-05 23:47:57,107 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-10-05 23:47:57,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-05 23:47:57,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:47:57,115 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:47:57,116 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:47:57,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:47:57,122 INFO L82 PathProgramCache]: Analyzing trace with hash -1717538151, now seen corresponding path program 1 times [2020-10-05 23:47:57,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:47:57,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376129685] [2020-10-05 23:47:57,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:47:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:47:57,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:47:57,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376129685] [2020-10-05 23:47:57,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:47:57,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:47:57,343 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305619231] [2020-10-05 23:47:57,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:47:57,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:47:57,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:47:57,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:47:57,364 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-10-05 23:47:57,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:47:57,405 INFO L93 Difference]: Finished difference Result 52 states and 100 transitions. [2020-10-05 23:47:57,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:47:57,407 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-05 23:47:57,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:47:57,421 INFO L225 Difference]: With dead ends: 52 [2020-10-05 23:47:57,421 INFO L226 Difference]: Without dead ends: 52 [2020-10-05 23:47:57,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:47:57,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-05 23:47:57,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2020-10-05 23:47:57,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-05 23:47:57,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 76 transitions. [2020-10-05 23:47:57,466 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 76 transitions. Word has length 8 [2020-10-05 23:47:57,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:47:57,466 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 76 transitions. [2020-10-05 23:47:57,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:47:57,467 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 76 transitions. [2020-10-05 23:47:57,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-05 23:47:57,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:47:57,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:47:57,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 23:47:57,469 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:47:57,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:47:57,469 INFO L82 PathProgramCache]: Analyzing trace with hash 62706239, now seen corresponding path program 1 times [2020-10-05 23:47:57,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:47:57,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749442583] [2020-10-05 23:47:57,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:47:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:47:57,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:47:57,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749442583] [2020-10-05 23:47:57,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:47:57,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-05 23:47:57,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753766616] [2020-10-05 23:47:57,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:47:57,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:47:57,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:47:57,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:47:57,561 INFO L87 Difference]: Start difference. First operand 40 states and 76 transitions. Second operand 3 states. [2020-10-05 23:47:57,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:47:57,603 INFO L93 Difference]: Finished difference Result 64 states and 124 transitions. [2020-10-05 23:47:57,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:47:57,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-05 23:47:57,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:47:57,606 INFO L225 Difference]: With dead ends: 64 [2020-10-05 23:47:57,606 INFO L226 Difference]: Without dead ends: 64 [2020-10-05 23:47:57,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:47:57,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-05 23:47:57,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 46. [2020-10-05 23:47:57,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-05 23:47:57,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 88 transitions. [2020-10-05 23:47:57,616 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 88 transitions. Word has length 11 [2020-10-05 23:47:57,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:47:57,617 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 88 transitions. [2020-10-05 23:47:57,617 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:47:57,617 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 88 transitions. [2020-10-05 23:47:57,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-05 23:47:57,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:47:57,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:47:57,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 23:47:57,619 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:47:57,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:47:57,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1954756591, now seen corresponding path program 1 times [2020-10-05 23:47:57,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:47:57,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443991936] [2020-10-05 23:47:57,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:47:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:47:57,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:47:57,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443991936] [2020-10-05 23:47:57,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986378250] [2020-10-05 23:47:57,686 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 [2020-10-05 23:47:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:47:57,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-05 23:47:57,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:47:57,834 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-05 23:47:57,834 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-05 23:47:57,842 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-05 23:47:57,842 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-05 23:47:57,843 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-10-05 23:47:57,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:47:57,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-05 23:47:57,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-10-05 23:47:57,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018069846] [2020-10-05 23:47:57,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:47:57,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:47:57,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:47:57,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:47:57,860 INFO L87 Difference]: Start difference. First operand 46 states and 88 transitions. Second operand 3 states. [2020-10-05 23:47:57,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:47:57,879 INFO L93 Difference]: Finished difference Result 40 states and 66 transitions. [2020-10-05 23:47:57,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:47:57,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-05 23:47:57,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:47:57,881 INFO L225 Difference]: With dead ends: 40 [2020-10-05 23:47:57,881 INFO L226 Difference]: Without dead ends: 40 [2020-10-05 23:47:57,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:47:57,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-05 23:47:57,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-05 23:47:57,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-05 23:47:57,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2020-10-05 23:47:57,887 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 15 [2020-10-05 23:47:57,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:47:57,887 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2020-10-05 23:47:57,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:47:57,888 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2020-10-05 23:47:57,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-05 23:47:57,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:47:57,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:47:58,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-05 23:47:58,102 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:47:58,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:47:58,103 INFO L82 PathProgramCache]: Analyzing trace with hash 525517821, now seen corresponding path program 2 times [2020-10-05 23:47:58,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:47:58,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146827163] [2020-10-05 23:47:58,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:47:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:47:58,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:47:58,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146827163] [2020-10-05 23:47:58,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418482282] [2020-10-05 23:47:58,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:47:58,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:47:58,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:47:58,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-05 23:47:58,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:47:58,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:47:58,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:47:58,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-10-05 23:47:58,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482720932] [2020-10-05 23:47:58,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 23:47:58,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:47:58,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 23:47:58,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:47:58,326 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand 6 states. [2020-10-05 23:47:58,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:47:58,453 INFO L93 Difference]: Finished difference Result 104 states and 159 transitions. [2020-10-05 23:47:58,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-05 23:47:58,454 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-05 23:47:58,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:47:58,455 INFO L225 Difference]: With dead ends: 104 [2020-10-05 23:47:58,455 INFO L226 Difference]: Without dead ends: 104 [2020-10-05 23:47:58,456 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-05 23:47:58,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-05 23:47:58,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 79. [2020-10-05 23:47:58,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-05 23:47:58,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 124 transitions. [2020-10-05 23:47:58,465 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 124 transitions. Word has length 15 [2020-10-05 23:47:58,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:47:58,466 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 124 transitions. [2020-10-05 23:47:58,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 23:47:58,466 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 124 transitions. [2020-10-05 23:47:58,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-05 23:47:58,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:47:58,467 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:47:58,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:47:58,682 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:47:58,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:47:58,683 INFO L82 PathProgramCache]: Analyzing trace with hash 485096059, now seen corresponding path program 3 times [2020-10-05 23:47:58,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:47:58,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555721545] [2020-10-05 23:47:58,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:47:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:47:58,762 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-05 23:47:58,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555721545] [2020-10-05 23:47:58,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977255316] [2020-10-05 23:47:58,763 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:47:58,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-05 23:47:58,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:47:58,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-05 23:47:58,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:47:58,863 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-05 23:47:58,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:47:58,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-05 23:47:58,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568000220] [2020-10-05 23:47:58,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 23:47:58,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:47:58,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 23:47:58,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:47:58,866 INFO L87 Difference]: Start difference. First operand 79 states and 124 transitions. Second operand 6 states. [2020-10-05 23:47:58,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:47:58,904 INFO L93 Difference]: Finished difference Result 110 states and 168 transitions. [2020-10-05 23:47:58,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:47:58,905 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-10-05 23:47:58,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:47:58,907 INFO L225 Difference]: With dead ends: 110 [2020-10-05 23:47:58,907 INFO L226 Difference]: Without dead ends: 110 [2020-10-05 23:47:58,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:47:58,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-05 23:47:58,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 100. [2020-10-05 23:47:58,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-05 23:47:58,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 154 transitions. [2020-10-05 23:47:58,917 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 154 transitions. Word has length 22 [2020-10-05 23:47:58,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:47:58,918 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 154 transitions. [2020-10-05 23:47:58,918 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 23:47:58,918 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 154 transitions. [2020-10-05 23:47:58,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-05 23:47:58,919 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:47:58,919 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:47:59,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:47:59,133 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:47:59,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:47:59,134 INFO L82 PathProgramCache]: Analyzing trace with hash -2041399383, now seen corresponding path program 4 times [2020-10-05 23:47:59,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:47:59,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940425990] [2020-10-05 23:47:59,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:47:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:47:59,195 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-05 23:47:59,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940425990] [2020-10-05 23:47:59,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096429250] [2020-10-05 23:47:59,196 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-10-05 23:47:59,261 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:47:59,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:47:59,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-05 23:47:59,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:47:59,288 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-05 23:47:59,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:47:59,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-05 23:47:59,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939295414] [2020-10-05 23:47:59,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-05 23:47:59,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:47:59,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-05 23:47:59,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:47:59,291 INFO L87 Difference]: Start difference. First operand 100 states and 154 transitions. Second operand 6 states. [2020-10-05 23:47:59,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:47:59,315 INFO L93 Difference]: Finished difference Result 148 states and 220 transitions. [2020-10-05 23:47:59,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:47:59,316 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-05 23:47:59,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:47:59,317 INFO L225 Difference]: With dead ends: 148 [2020-10-05 23:47:59,318 INFO L226 Difference]: Without dead ends: 148 [2020-10-05 23:47:59,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-05 23:47:59,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-05 23:47:59,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 130. [2020-10-05 23:47:59,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-05 23:47:59,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 196 transitions. [2020-10-05 23:47:59,329 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 196 transitions. Word has length 25 [2020-10-05 23:47:59,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:47:59,330 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 196 transitions. [2020-10-05 23:47:59,330 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-05 23:47:59,330 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 196 transitions. [2020-10-05 23:47:59,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-05 23:47:59,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:47:59,332 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:47:59,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:47:59,546 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:47:59,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:47:59,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1548321815, now seen corresponding path program 5 times [2020-10-05 23:47:59,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:47:59,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141383770] [2020-10-05 23:47:59,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:47:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:47:59,610 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-05 23:47:59,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141383770] [2020-10-05 23:47:59,611 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182112907] [2020-10-05 23:47:59,611 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 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 [2020-10-05 23:47:59,674 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-10-05 23:47:59,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:47:59,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-05 23:47:59,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:47:59,700 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-05 23:47:59,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:47:59,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-05 23:47:59,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527694075] [2020-10-05 23:47:59,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-05 23:47:59,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:47:59,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-05 23:47:59,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-05 23:47:59,703 INFO L87 Difference]: Start difference. First operand 130 states and 196 transitions. Second operand 7 states. [2020-10-05 23:47:59,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:47:59,734 INFO L93 Difference]: Finished difference Result 178 states and 262 transitions. [2020-10-05 23:47:59,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 23:47:59,735 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-10-05 23:47:59,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:47:59,736 INFO L225 Difference]: With dead ends: 178 [2020-10-05 23:47:59,736 INFO L226 Difference]: Without dead ends: 178 [2020-10-05 23:47:59,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-05 23:47:59,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-05 23:47:59,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 160. [2020-10-05 23:47:59,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-05 23:47:59,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 238 transitions. [2020-10-05 23:47:59,747 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 238 transitions. Word has length 29 [2020-10-05 23:47:59,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:47:59,748 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 238 transitions. [2020-10-05 23:47:59,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-05 23:47:59,748 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 238 transitions. [2020-10-05 23:47:59,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-05 23:47:59,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:47:59,751 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:47:59,964 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-10-05 23:47:59,965 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:47:59,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:47:59,965 INFO L82 PathProgramCache]: Analyzing trace with hash -2012714619, now seen corresponding path program 6 times [2020-10-05 23:47:59,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:47:59,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629535502] [2020-10-05 23:47:59,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:47:59,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:00,041 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-05 23:48:00,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629535502] [2020-10-05 23:48:00,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86367182] [2020-10-05 23:48:00,042 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:00,150 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-10-05 23:48:00,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:48:00,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-05 23:48:00,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:00,231 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-05 23:48:00,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:00,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2020-10-05 23:48:00,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428406239] [2020-10-05 23:48:00,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-05 23:48:00,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:00,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-05 23:48:00,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-05 23:48:00,233 INFO L87 Difference]: Start difference. First operand 160 states and 238 transitions. Second operand 11 states. [2020-10-05 23:48:00,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:00,689 INFO L93 Difference]: Finished difference Result 266 states and 378 transitions. [2020-10-05 23:48:00,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-05 23:48:00,690 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-05 23:48:00,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:00,692 INFO L225 Difference]: With dead ends: 266 [2020-10-05 23:48:00,692 INFO L226 Difference]: Without dead ends: 266 [2020-10-05 23:48:00,693 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=315, Invalid=615, Unknown=0, NotChecked=0, Total=930 [2020-10-05 23:48:00,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-05 23:48:00,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 229. [2020-10-05 23:48:00,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-05 23:48:00,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 331 transitions. [2020-10-05 23:48:00,704 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 331 transitions. Word has length 33 [2020-10-05 23:48:00,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:00,704 INFO L479 AbstractCegarLoop]: Abstraction has 229 states and 331 transitions. [2020-10-05 23:48:00,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-05 23:48:00,705 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 331 transitions. [2020-10-05 23:48:00,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-05 23:48:00,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:00,707 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:00,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:00,922 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:00,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:00,923 INFO L82 PathProgramCache]: Analyzing trace with hash -480954575, now seen corresponding path program 7 times [2020-10-05 23:48:00,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:00,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975495721] [2020-10-05 23:48:00,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:01,013 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 10 proven. 45 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-05 23:48:01,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975495721] [2020-10-05 23:48:01,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696432041] [2020-10-05 23:48:01,014 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:01,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:01,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-05 23:48:01,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:01,109 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 10 proven. 45 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-05 23:48:01,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:01,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-05 23:48:01,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953691807] [2020-10-05 23:48:01,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-05 23:48:01,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:01,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-05 23:48:01,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-05 23:48:01,112 INFO L87 Difference]: Start difference. First operand 229 states and 331 transitions. Second operand 9 states. [2020-10-05 23:48:01,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:01,150 INFO L93 Difference]: Finished difference Result 286 states and 407 transitions. [2020-10-05 23:48:01,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-05 23:48:01,150 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-10-05 23:48:01,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:01,152 INFO L225 Difference]: With dead ends: 286 [2020-10-05 23:48:01,152 INFO L226 Difference]: Without dead ends: 286 [2020-10-05 23:48:01,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-05 23:48:01,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-05 23:48:01,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 265. [2020-10-05 23:48:01,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-05 23:48:01,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 380 transitions. [2020-10-05 23:48:01,162 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 380 transitions. Word has length 40 [2020-10-05 23:48:01,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:01,162 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 380 transitions. [2020-10-05 23:48:01,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-05 23:48:01,162 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 380 transitions. [2020-10-05 23:48:01,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-05 23:48:01,165 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:01,165 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:01,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:01,379 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:01,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:01,380 INFO L82 PathProgramCache]: Analyzing trace with hash -870694653, now seen corresponding path program 8 times [2020-10-05 23:48:01,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:01,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698768557] [2020-10-05 23:48:01,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:01,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:01,471 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 10 proven. 66 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-05 23:48:01,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698768557] [2020-10-05 23:48:01,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729348042] [2020-10-05 23:48:01,472 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:01,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:48:01,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:48:01,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:48:01,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:01,614 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 10 proven. 66 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-05 23:48:01,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:01,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-10-05 23:48:01,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318085353] [2020-10-05 23:48:01,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-05 23:48:01,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:01,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-05 23:48:01,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-05 23:48:01,617 INFO L87 Difference]: Start difference. First operand 265 states and 380 transitions. Second operand 10 states. [2020-10-05 23:48:01,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:01,683 INFO L93 Difference]: Finished difference Result 322 states and 456 transitions. [2020-10-05 23:48:01,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-05 23:48:01,684 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-10-05 23:48:01,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:01,686 INFO L225 Difference]: With dead ends: 322 [2020-10-05 23:48:01,686 INFO L226 Difference]: Without dead ends: 322 [2020-10-05 23:48:01,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-05 23:48:01,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-05 23:48:01,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 301. [2020-10-05 23:48:01,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 301 states. [2020-10-05 23:48:01,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 429 transitions. [2020-10-05 23:48:01,698 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 429 transitions. Word has length 44 [2020-10-05 23:48:01,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:01,698 INFO L479 AbstractCegarLoop]: Abstraction has 301 states and 429 transitions. [2020-10-05 23:48:01,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-05 23:48:01,699 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 429 transitions. [2020-10-05 23:48:01,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-05 23:48:01,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:01,701 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:01,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-05 23:48:01,916 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:01,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:01,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1422004693, now seen corresponding path program 9 times [2020-10-05 23:48:01,917 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:01,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668327348] [2020-10-05 23:48:01,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:02,073 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 10 proven. 91 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-05 23:48:02,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668327348] [2020-10-05 23:48:02,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958075864] [2020-10-05 23:48:02,074 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:02,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-05 23:48:02,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:48:02,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-05 23:48:02,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:02,237 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-05 23:48:02,237 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:02,237 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2020-10-05 23:48:02,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282420471] [2020-10-05 23:48:02,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:48:02,238 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:02,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:48:02,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:48:02,239 INFO L87 Difference]: Start difference. First operand 301 states and 429 transitions. Second operand 15 states. [2020-10-05 23:48:03,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:03,219 INFO L93 Difference]: Finished difference Result 440 states and 606 transitions. [2020-10-05 23:48:03,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-05 23:48:03,222 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 48 [2020-10-05 23:48:03,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:03,225 INFO L225 Difference]: With dead ends: 440 [2020-10-05 23:48:03,225 INFO L226 Difference]: Without dead ends: 440 [2020-10-05 23:48:03,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 815 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=945, Invalid=2025, Unknown=0, NotChecked=0, Total=2970 [2020-10-05 23:48:03,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2020-10-05 23:48:03,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 394. [2020-10-05 23:48:03,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 394 states. [2020-10-05 23:48:03,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 550 transitions. [2020-10-05 23:48:03,237 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 550 transitions. Word has length 48 [2020-10-05 23:48:03,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:03,239 INFO L479 AbstractCegarLoop]: Abstraction has 394 states and 550 transitions. [2020-10-05 23:48:03,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:48:03,239 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 550 transitions. [2020-10-05 23:48:03,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-05 23:48:03,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:03,241 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:03,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:03,458 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:03,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:03,459 INFO L82 PathProgramCache]: Analyzing trace with hash 314386685, now seen corresponding path program 10 times [2020-10-05 23:48:03,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:03,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200761688] [2020-10-05 23:48:03,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:03,566 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 13 proven. 120 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-05 23:48:03,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200761688] [2020-10-05 23:48:03,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825351780] [2020-10-05 23:48:03,567 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:03,671 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:48:03,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:48:03,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:48:03,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:03,705 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 13 proven. 120 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-05 23:48:03,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:03,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-10-05 23:48:03,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223327139] [2020-10-05 23:48:03,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-05 23:48:03,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:03,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-05 23:48:03,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-05 23:48:03,707 INFO L87 Difference]: Start difference. First operand 394 states and 550 transitions. Second operand 12 states. [2020-10-05 23:48:03,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:03,750 INFO L93 Difference]: Finished difference Result 460 states and 636 transitions. [2020-10-05 23:48:03,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:48:03,751 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2020-10-05 23:48:03,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:03,753 INFO L225 Difference]: With dead ends: 460 [2020-10-05 23:48:03,753 INFO L226 Difference]: Without dead ends: 460 [2020-10-05 23:48:03,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-05 23:48:03,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2020-10-05 23:48:03,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 436. [2020-10-05 23:48:03,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 436 states. [2020-10-05 23:48:03,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 606 transitions. [2020-10-05 23:48:03,764 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 606 transitions. Word has length 55 [2020-10-05 23:48:03,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:03,765 INFO L479 AbstractCegarLoop]: Abstraction has 436 states and 606 transitions. [2020-10-05 23:48:03,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-05 23:48:03,765 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 606 transitions. [2020-10-05 23:48:03,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-05 23:48:03,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:03,767 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:03,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:03,982 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:03,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:03,983 INFO L82 PathProgramCache]: Analyzing trace with hash 298647787, now seen corresponding path program 11 times [2020-10-05 23:48:03,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:03,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850994238] [2020-10-05 23:48:03,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:04,104 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 13 proven. 153 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-05 23:48:04,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850994238] [2020-10-05 23:48:04,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187700601] [2020-10-05 23:48:04,104 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 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:04,192 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-10-05 23:48:04,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:48:04,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:48:04,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:04,225 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 13 proven. 153 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-05 23:48:04,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:04,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-10-05 23:48:04,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914060987] [2020-10-05 23:48:04,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:48:04,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:04,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:48:04,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:48:04,227 INFO L87 Difference]: Start difference. First operand 436 states and 606 transitions. Second operand 13 states. [2020-10-05 23:48:04,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:04,272 INFO L93 Difference]: Finished difference Result 502 states and 692 transitions. [2020-10-05 23:48:04,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 23:48:04,275 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 59 [2020-10-05 23:48:04,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:04,278 INFO L225 Difference]: With dead ends: 502 [2020-10-05 23:48:04,278 INFO L226 Difference]: Without dead ends: 502 [2020-10-05 23:48:04,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:48:04,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-10-05 23:48:04,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 478. [2020-10-05 23:48:04,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-10-05 23:48:04,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 662 transitions. [2020-10-05 23:48:04,290 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 662 transitions. Word has length 59 [2020-10-05 23:48:04,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:04,290 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 662 transitions. [2020-10-05 23:48:04,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:48:04,290 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 662 transitions. [2020-10-05 23:48:04,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-05 23:48:04,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:04,292 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:04,500 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-05 23:48:04,501 INFO L427 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:04,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:04,502 INFO L82 PathProgramCache]: Analyzing trace with hash -734842407, now seen corresponding path program 12 times [2020-10-05 23:48:04,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:04,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324699540] [2020-10-05 23:48:04,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:04,634 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 13 proven. 190 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-05 23:48:04,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324699540] [2020-10-05 23:48:04,635 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433787713] [2020-10-05 23:48:04,635 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:04,818 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2020-10-05 23:48:04,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:48:04,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-05 23:48:04,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:04,898 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-10-05 23:48:04,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:04,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8] total 19 [2020-10-05 23:48:04,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297073782] [2020-10-05 23:48:04,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-05 23:48:04,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:04,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-05 23:48:04,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2020-10-05 23:48:04,900 INFO L87 Difference]: Start difference. First operand 478 states and 662 transitions. Second operand 19 states. [2020-10-05 23:48:06,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:06,681 INFO L93 Difference]: Finished difference Result 650 states and 876 transitions. [2020-10-05 23:48:06,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-10-05 23:48:06,682 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 63 [2020-10-05 23:48:06,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:06,686 INFO L225 Difference]: With dead ends: 650 [2020-10-05 23:48:06,687 INFO L226 Difference]: Without dead ends: 650 [2020-10-05 23:48:06,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2205 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2184, Invalid=4956, Unknown=0, NotChecked=0, Total=7140 [2020-10-05 23:48:06,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2020-10-05 23:48:06,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 595. [2020-10-05 23:48:06,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 595 states. [2020-10-05 23:48:06,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 811 transitions. [2020-10-05 23:48:06,707 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 811 transitions. Word has length 63 [2020-10-05 23:48:06,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:06,708 INFO L479 AbstractCegarLoop]: Abstraction has 595 states and 811 transitions. [2020-10-05 23:48:06,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-05 23:48:06,708 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 811 transitions. [2020-10-05 23:48:06,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-05 23:48:06,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:06,711 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:06,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-05 23:48:06,925 INFO L427 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:06,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:06,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1647338205, now seen corresponding path program 13 times [2020-10-05 23:48:06,926 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:06,926 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472448061] [2020-10-05 23:48:06,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:07,117 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 16 proven. 231 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-05 23:48:07,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472448061] [2020-10-05 23:48:07,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500037971] [2020-10-05 23:48:07,118 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:07,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-05 23:48:07,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:07,232 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 16 proven. 231 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-05 23:48:07,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:07,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-10-05 23:48:07,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101586704] [2020-10-05 23:48:07,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:48:07,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:07,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:48:07,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:48:07,234 INFO L87 Difference]: Start difference. First operand 595 states and 811 transitions. Second operand 15 states. [2020-10-05 23:48:07,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:07,293 INFO L93 Difference]: Finished difference Result 670 states and 907 transitions. [2020-10-05 23:48:07,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 23:48:07,293 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 70 [2020-10-05 23:48:07,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:07,296 INFO L225 Difference]: With dead ends: 670 [2020-10-05 23:48:07,297 INFO L226 Difference]: Without dead ends: 670 [2020-10-05 23:48:07,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:48:07,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-10-05 23:48:07,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 643. [2020-10-05 23:48:07,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2020-10-05 23:48:07,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 874 transitions. [2020-10-05 23:48:07,313 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 874 transitions. Word has length 70 [2020-10-05 23:48:07,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:07,313 INFO L479 AbstractCegarLoop]: Abstraction has 643 states and 874 transitions. [2020-10-05 23:48:07,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:48:07,313 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 874 transitions. [2020-10-05 23:48:07,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-05 23:48:07,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:07,315 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:07,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-05 23:48:07,529 INFO L427 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:07,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:07,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1171001041, now seen corresponding path program 14 times [2020-10-05 23:48:07,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:07,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647794522] [2020-10-05 23:48:07,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:07,752 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 16 proven. 276 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-05 23:48:07,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647794522] [2020-10-05 23:48:07,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907675888] [2020-10-05 23:48:07,753 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 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:07,846 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:48:07,846 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:48:07,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-05 23:48:07,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:07,894 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 16 proven. 276 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-05 23:48:07,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:07,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-10-05 23:48:07,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299077795] [2020-10-05 23:48:07,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-05 23:48:07,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:07,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-05 23:48:07,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-05 23:48:07,901 INFO L87 Difference]: Start difference. First operand 643 states and 874 transitions. Second operand 16 states. [2020-10-05 23:48:07,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:07,958 INFO L93 Difference]: Finished difference Result 718 states and 970 transitions. [2020-10-05 23:48:07,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:48:07,959 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 74 [2020-10-05 23:48:07,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:07,962 INFO L225 Difference]: With dead ends: 718 [2020-10-05 23:48:07,962 INFO L226 Difference]: Without dead ends: 718 [2020-10-05 23:48:07,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-05 23:48:07,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2020-10-05 23:48:07,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 691. [2020-10-05 23:48:07,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-10-05 23:48:07,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 937 transitions. [2020-10-05 23:48:07,976 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 937 transitions. Word has length 74 [2020-10-05 23:48:07,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:07,976 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 937 transitions. [2020-10-05 23:48:07,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-05 23:48:07,977 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 937 transitions. [2020-10-05 23:48:07,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-05 23:48:07,978 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:07,979 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:08,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:08,194 INFO L427 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:08,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:08,194 INFO L82 PathProgramCache]: Analyzing trace with hash 776210049, now seen corresponding path program 15 times [2020-10-05 23:48:08,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:08,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419515999] [2020-10-05 23:48:08,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:08,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:08,397 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 16 proven. 325 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-10-05 23:48:08,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419515999] [2020-10-05 23:48:08,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882105391] [2020-10-05 23:48:08,401 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:08,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-10-05 23:48:08,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:48:08,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-05 23:48:08,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:08,633 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2020-10-05 23:48:08,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:08,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9] total 23 [2020-10-05 23:48:08,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703873533] [2020-10-05 23:48:08,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-05 23:48:08,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:08,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-05 23:48:08,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:48:08,636 INFO L87 Difference]: Start difference. First operand 691 states and 937 transitions. Second operand 23 states. [2020-10-05 23:48:11,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:11,960 INFO L93 Difference]: Finished difference Result 896 states and 1188 transitions. [2020-10-05 23:48:11,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2020-10-05 23:48:11,960 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 78 [2020-10-05 23:48:11,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:11,965 INFO L225 Difference]: With dead ends: 896 [2020-10-05 23:48:11,965 INFO L226 Difference]: Without dead ends: 896 [2020-10-05 23:48:11,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4844 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=4320, Invalid=10200, Unknown=0, NotChecked=0, Total=14520 [2020-10-05 23:48:11,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2020-10-05 23:48:11,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 832. [2020-10-05 23:48:11,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 832 states. [2020-10-05 23:48:11,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 832 states to 832 states and 1114 transitions. [2020-10-05 23:48:11,985 INFO L78 Accepts]: Start accepts. Automaton has 832 states and 1114 transitions. Word has length 78 [2020-10-05 23:48:11,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:11,985 INFO L479 AbstractCegarLoop]: Abstraction has 832 states and 1114 transitions. [2020-10-05 23:48:11,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-05 23:48:11,985 INFO L276 IsEmpty]: Start isEmpty. Operand 832 states and 1114 transitions. [2020-10-05 23:48:11,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-05 23:48:11,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:11,988 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:12,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-05 23:48:12,202 INFO L427 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:12,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:12,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1559138385, now seen corresponding path program 16 times [2020-10-05 23:48:12,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:12,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703877428] [2020-10-05 23:48:12,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:12,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:12,397 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 19 proven. 378 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-05 23:48:12,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703877428] [2020-10-05 23:48:12,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911398113] [2020-10-05 23:48:12,398 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:12,659 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:48:12,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:48:12,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-05 23:48:12,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:12,693 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 19 proven. 378 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-05 23:48:12,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:12,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-10-05 23:48:12,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935374516] [2020-10-05 23:48:12,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-05 23:48:12,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:12,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-05 23:48:12,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-05 23:48:12,696 INFO L87 Difference]: Start difference. First operand 832 states and 1114 transitions. Second operand 18 states. [2020-10-05 23:48:12,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:12,769 INFO L93 Difference]: Finished difference Result 916 states and 1220 transitions. [2020-10-05 23:48:12,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 23:48:12,770 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 85 [2020-10-05 23:48:12,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:12,773 INFO L225 Difference]: With dead ends: 916 [2020-10-05 23:48:12,774 INFO L226 Difference]: Without dead ends: 916 [2020-10-05 23:48:12,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-05 23:48:12,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2020-10-05 23:48:12,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 886. [2020-10-05 23:48:12,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 886 states. [2020-10-05 23:48:12,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 886 states to 886 states and 1184 transitions. [2020-10-05 23:48:12,790 INFO L78 Accepts]: Start accepts. Automaton has 886 states and 1184 transitions. Word has length 85 [2020-10-05 23:48:12,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:12,791 INFO L479 AbstractCegarLoop]: Abstraction has 886 states and 1184 transitions. [2020-10-05 23:48:12,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-05 23:48:12,791 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states and 1184 transitions. [2020-10-05 23:48:12,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-05 23:48:12,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:12,793 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:13,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-05 23:48:13,008 INFO L427 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:13,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:13,008 INFO L82 PathProgramCache]: Analyzing trace with hash -933866561, now seen corresponding path program 17 times [2020-10-05 23:48:13,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:13,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359613232] [2020-10-05 23:48:13,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:13,215 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 19 proven. 435 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-05 23:48:13,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359613232] [2020-10-05 23:48:13,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898237413] [2020-10-05 23:48:13,216 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:13,384 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2020-10-05 23:48:13,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:48:13,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-05 23:48:13,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:13,431 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 19 proven. 435 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-05 23:48:13,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:13,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-10-05 23:48:13,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740532736] [2020-10-05 23:48:13,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-05 23:48:13,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:13,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-05 23:48:13,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-05 23:48:13,434 INFO L87 Difference]: Start difference. First operand 886 states and 1184 transitions. Second operand 19 states. [2020-10-05 23:48:13,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:13,519 INFO L93 Difference]: Finished difference Result 970 states and 1290 transitions. [2020-10-05 23:48:13,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-05 23:48:13,520 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 89 [2020-10-05 23:48:13,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:13,525 INFO L225 Difference]: With dead ends: 970 [2020-10-05 23:48:13,525 INFO L226 Difference]: Without dead ends: 970 [2020-10-05 23:48:13,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-05 23:48:13,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2020-10-05 23:48:13,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 940. [2020-10-05 23:48:13,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 940 states. [2020-10-05 23:48:13,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1254 transitions. [2020-10-05 23:48:13,543 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1254 transitions. Word has length 89 [2020-10-05 23:48:13,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:13,543 INFO L479 AbstractCegarLoop]: Abstraction has 940 states and 1254 transitions. [2020-10-05 23:48:13,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-05 23:48:13,543 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1254 transitions. [2020-10-05 23:48:13,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-05 23:48:13,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:13,546 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:13,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:13,760 INFO L427 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:13,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:13,760 INFO L82 PathProgramCache]: Analyzing trace with hash -365776851, now seen corresponding path program 18 times [2020-10-05 23:48:13,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:13,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743920558] [2020-10-05 23:48:13,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:14,047 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 19 proven. 496 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-05 23:48:14,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743920558] [2020-10-05 23:48:14,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296866351] [2020-10-05 23:48:14,048 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:14,398 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2020-10-05 23:48:14,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:48:14,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-05 23:48:14,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:14,683 INFO L134 CoverageAnalysis]: Checked inductivity of 566 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2020-10-05 23:48:14,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:14,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 10] total 27 [2020-10-05 23:48:14,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670285026] [2020-10-05 23:48:14,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-05 23:48:14,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:14,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-05 23:48:14,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=487, Unknown=0, NotChecked=0, Total=702 [2020-10-05 23:48:14,686 INFO L87 Difference]: Start difference. First operand 940 states and 1254 transitions. Second operand 27 states. [2020-10-05 23:48:20,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:20,212 INFO L93 Difference]: Finished difference Result 1178 states and 1542 transitions. [2020-10-05 23:48:20,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2020-10-05 23:48:20,213 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 93 [2020-10-05 23:48:20,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:20,217 INFO L225 Difference]: With dead ends: 1178 [2020-10-05 23:48:20,217 INFO L226 Difference]: Without dead ends: 1178 [2020-10-05 23:48:20,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9308 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=7695, Invalid=18711, Unknown=0, NotChecked=0, Total=26406 [2020-10-05 23:48:20,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2020-10-05 23:48:20,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1105. [2020-10-05 23:48:20,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1105 states. [2020-10-05 23:48:20,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1459 transitions. [2020-10-05 23:48:20,243 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1459 transitions. Word has length 93 [2020-10-05 23:48:20,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:20,243 INFO L479 AbstractCegarLoop]: Abstraction has 1105 states and 1459 transitions. [2020-10-05 23:48:20,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-05 23:48:20,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1459 transitions. [2020-10-05 23:48:20,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-05 23:48:20,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:20,247 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:20,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:20,462 INFO L427 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:20,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:20,462 INFO L82 PathProgramCache]: Analyzing trace with hash -2077738871, now seen corresponding path program 19 times [2020-10-05 23:48:20,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:20,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643128243] [2020-10-05 23:48:20,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:20,711 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 22 proven. 561 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-05 23:48:20,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643128243] [2020-10-05 23:48:20,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376923277] [2020-10-05 23:48:20,712 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:20,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-05 23:48:20,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:20,885 INFO L134 CoverageAnalysis]: Checked inductivity of 653 backedges. 22 proven. 561 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-05 23:48:20,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:20,886 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-10-05 23:48:20,886 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075673960] [2020-10-05 23:48:20,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-05 23:48:20,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:20,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-05 23:48:20,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-05 23:48:20,892 INFO L87 Difference]: Start difference. First operand 1105 states and 1459 transitions. Second operand 21 states. [2020-10-05 23:48:20,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:20,976 INFO L93 Difference]: Finished difference Result 1198 states and 1575 transitions. [2020-10-05 23:48:20,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-05 23:48:20,977 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 100 [2020-10-05 23:48:20,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:20,982 INFO L225 Difference]: With dead ends: 1198 [2020-10-05 23:48:20,982 INFO L226 Difference]: Without dead ends: 1198 [2020-10-05 23:48:20,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-05 23:48:20,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2020-10-05 23:48:20,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1165. [2020-10-05 23:48:20,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1165 states. [2020-10-05 23:48:21,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1536 transitions. [2020-10-05 23:48:21,004 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1536 transitions. Word has length 100 [2020-10-05 23:48:21,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:21,005 INFO L479 AbstractCegarLoop]: Abstraction has 1165 states and 1536 transitions. [2020-10-05 23:48:21,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-05 23:48:21,005 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1536 transitions. [2020-10-05 23:48:21,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-05 23:48:21,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:21,008 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:21,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:21,222 INFO L427 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:21,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:21,223 INFO L82 PathProgramCache]: Analyzing trace with hash 110062427, now seen corresponding path program 20 times [2020-10-05 23:48:21,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:21,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96105000] [2020-10-05 23:48:21,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:21,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:21,534 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 22 proven. 630 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-05 23:48:21,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96105000] [2020-10-05 23:48:21,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457182146] [2020-10-05 23:48:21,535 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 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:21,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:48:21,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:48:21,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-05 23:48:21,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:21,738 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 22 proven. 630 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-05 23:48:21,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:21,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-10-05 23:48:21,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359688330] [2020-10-05 23:48:21,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-05 23:48:21,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:21,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-05 23:48:21,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-05 23:48:21,741 INFO L87 Difference]: Start difference. First operand 1165 states and 1536 transitions. Second operand 22 states. [2020-10-05 23:48:21,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:21,853 INFO L93 Difference]: Finished difference Result 1258 states and 1652 transitions. [2020-10-05 23:48:21,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 23:48:21,854 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 104 [2020-10-05 23:48:21,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:21,861 INFO L225 Difference]: With dead ends: 1258 [2020-10-05 23:48:21,862 INFO L226 Difference]: Without dead ends: 1258 [2020-10-05 23:48:21,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-05 23:48:21,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2020-10-05 23:48:21,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1225. [2020-10-05 23:48:21,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2020-10-05 23:48:21,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1613 transitions. [2020-10-05 23:48:21,892 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1613 transitions. Word has length 104 [2020-10-05 23:48:21,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:21,893 INFO L479 AbstractCegarLoop]: Abstraction has 1225 states and 1613 transitions. [2020-10-05 23:48:21,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-05 23:48:21,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1613 transitions. [2020-10-05 23:48:21,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-05 23:48:21,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:21,899 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:22,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-05 23:48:22,113 INFO L427 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:22,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:22,113 INFO L82 PathProgramCache]: Analyzing trace with hash -912464595, now seen corresponding path program 21 times [2020-10-05 23:48:22,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:22,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524793135] [2020-10-05 23:48:22,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:22,595 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 22 proven. 703 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-05 23:48:22,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524793135] [2020-10-05 23:48:22,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882832095] [2020-10-05 23:48:22,596 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:22,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2020-10-05 23:48:22,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:48:22,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-05 23:48:22,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:23,018 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-10-05 23:48:23,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:23,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 11] total 31 [2020-10-05 23:48:23,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7156671] [2020-10-05 23:48:23,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-05 23:48:23,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:23,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-05 23:48:23,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=645, Unknown=0, NotChecked=0, Total=930 [2020-10-05 23:48:23,022 INFO L87 Difference]: Start difference. First operand 1225 states and 1613 transitions. Second operand 31 states. [2020-10-05 23:48:32,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:32,016 INFO L93 Difference]: Finished difference Result 1460 states and 1896 transitions. [2020-10-05 23:48:32,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 211 states. [2020-10-05 23:48:32,017 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 108 [2020-10-05 23:48:32,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:32,021 INFO L225 Difference]: With dead ends: 1460 [2020-10-05 23:48:32,022 INFO L226 Difference]: Without dead ends: 1460 [2020-10-05 23:48:32,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16281 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=12705, Invalid=31605, Unknown=0, NotChecked=0, Total=44310 [2020-10-05 23:48:32,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2020-10-05 23:48:32,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1414. [2020-10-05 23:48:32,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1414 states. [2020-10-05 23:48:32,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 1846 transitions. [2020-10-05 23:48:32,047 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 1846 transitions. Word has length 108 [2020-10-05 23:48:32,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:32,047 INFO L479 AbstractCegarLoop]: Abstraction has 1414 states and 1846 transitions. [2020-10-05 23:48:32,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-05 23:48:32,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 1846 transitions. [2020-10-05 23:48:32,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-05 23:48:32,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:32,051 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:32,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-05 23:48:32,266 INFO L427 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:32,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:32,267 INFO L82 PathProgramCache]: Analyzing trace with hash 2018487717, now seen corresponding path program 22 times [2020-10-05 23:48:32,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:32,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779271064] [2020-10-05 23:48:32,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:32,406 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-05 23:48:32,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779271064] [2020-10-05 23:48:32,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001371044] [2020-10-05 23:48:32,407 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:32,975 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:48:32,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:48:32,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-05 23:48:32,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:33,043 INFO L134 CoverageAnalysis]: Checked inductivity of 897 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-05 23:48:33,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:33,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-10-05 23:48:33,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289955500] [2020-10-05 23:48:33,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:48:33,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:33,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:48:33,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:48:33,045 INFO L87 Difference]: Start difference. First operand 1414 states and 1846 transitions. Second operand 13 states. [2020-10-05 23:48:33,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:33,140 INFO L93 Difference]: Finished difference Result 1589 states and 2052 transitions. [2020-10-05 23:48:33,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-05 23:48:33,140 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 115 [2020-10-05 23:48:33,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:33,146 INFO L225 Difference]: With dead ends: 1589 [2020-10-05 23:48:33,147 INFO L226 Difference]: Without dead ends: 1589 [2020-10-05 23:48:33,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:48:33,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2020-10-05 23:48:33,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1543. [2020-10-05 23:48:33,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1543 states. [2020-10-05 23:48:33,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2002 transitions. [2020-10-05 23:48:33,169 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2002 transitions. Word has length 115 [2020-10-05 23:48:33,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:33,169 INFO L479 AbstractCegarLoop]: Abstraction has 1543 states and 2002 transitions. [2020-10-05 23:48:33,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:48:33,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2002 transitions. [2020-10-05 23:48:33,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-05 23:48:33,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:33,174 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:33,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:33,386 INFO L427 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:33,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:33,387 INFO L82 PathProgramCache]: Analyzing trace with hash -2042676161, now seen corresponding path program 23 times [2020-10-05 23:48:33,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:33,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839828960] [2020-10-05 23:48:33,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:33,546 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-05 23:48:33,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839828960] [2020-10-05 23:48:33,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131753751] [2020-10-05 23:48:33,547 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:33,754 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2020-10-05 23:48:33,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:48:33,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-05 23:48:33,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:33,795 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-05 23:48:33,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:33,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 14 [2020-10-05 23:48:33,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122809355] [2020-10-05 23:48:33,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-05 23:48:33,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:33,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-05 23:48:33,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-05 23:48:33,797 INFO L87 Difference]: Start difference. First operand 1543 states and 2002 transitions. Second operand 14 states. [2020-10-05 23:48:33,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:33,869 INFO L93 Difference]: Finished difference Result 1718 states and 2208 transitions. [2020-10-05 23:48:33,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-05 23:48:33,870 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 118 [2020-10-05 23:48:33,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:33,877 INFO L225 Difference]: With dead ends: 1718 [2020-10-05 23:48:33,877 INFO L226 Difference]: Without dead ends: 1718 [2020-10-05 23:48:33,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-05 23:48:33,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1718 states. [2020-10-05 23:48:33,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1718 to 1672. [2020-10-05 23:48:33,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1672 states. [2020-10-05 23:48:33,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1672 states to 1672 states and 2158 transitions. [2020-10-05 23:48:33,900 INFO L78 Accepts]: Start accepts. Automaton has 1672 states and 2158 transitions. Word has length 118 [2020-10-05 23:48:33,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:33,901 INFO L479 AbstractCegarLoop]: Abstraction has 1672 states and 2158 transitions. [2020-10-05 23:48:33,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-05 23:48:33,901 INFO L276 IsEmpty]: Start isEmpty. Operand 1672 states and 2158 transitions. [2020-10-05 23:48:33,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-05 23:48:33,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:33,905 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:34,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-05 23:48:34,121 INFO L427 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:34,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:34,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1052962661, now seen corresponding path program 24 times [2020-10-05 23:48:34,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:34,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303007900] [2020-10-05 23:48:34,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:34,290 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-05 23:48:34,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303007900] [2020-10-05 23:48:34,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641418219] [2020-10-05 23:48:34,291 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:34,938 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s) [2020-10-05 23:48:34,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:48:34,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-05 23:48:34,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:34,974 INFO L134 CoverageAnalysis]: Checked inductivity of 956 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-05 23:48:34,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:34,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2020-10-05 23:48:34,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530815772] [2020-10-05 23:48:34,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-05 23:48:34,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:34,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-05 23:48:34,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:48:34,976 INFO L87 Difference]: Start difference. First operand 1672 states and 2158 transitions. Second operand 15 states. [2020-10-05 23:48:35,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:35,080 INFO L93 Difference]: Finished difference Result 1847 states and 2364 transitions. [2020-10-05 23:48:35,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 23:48:35,080 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 121 [2020-10-05 23:48:35,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:35,087 INFO L225 Difference]: With dead ends: 1847 [2020-10-05 23:48:35,087 INFO L226 Difference]: Without dead ends: 1847 [2020-10-05 23:48:35,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-05 23:48:35,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2020-10-05 23:48:35,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1801. [2020-10-05 23:48:35,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1801 states. [2020-10-05 23:48:35,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 2314 transitions. [2020-10-05 23:48:35,110 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 2314 transitions. Word has length 121 [2020-10-05 23:48:35,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:35,111 INFO L479 AbstractCegarLoop]: Abstraction has 1801 states and 2314 transitions. [2020-10-05 23:48:35,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-05 23:48:35,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 2314 transitions. [2020-10-05 23:48:35,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-05 23:48:35,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:35,116 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:35,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:35,331 INFO L427 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:35,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:35,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1691329151, now seen corresponding path program 25 times [2020-10-05 23:48:35,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:35,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155594852] [2020-10-05 23:48:35,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:35,542 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-05 23:48:35,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155594852] [2020-10-05 23:48:35,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417730815] [2020-10-05 23:48:35,543 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:35,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-05 23:48:35,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:35,752 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-05 23:48:35,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:35,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 16 [2020-10-05 23:48:35,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996061019] [2020-10-05 23:48:35,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-05 23:48:35,754 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:35,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-05 23:48:35,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-05 23:48:35,754 INFO L87 Difference]: Start difference. First operand 1801 states and 2314 transitions. Second operand 16 states. [2020-10-05 23:48:35,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:35,877 INFO L93 Difference]: Finished difference Result 1976 states and 2520 transitions. [2020-10-05 23:48:35,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:48:35,878 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 124 [2020-10-05 23:48:35,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:35,887 INFO L225 Difference]: With dead ends: 1976 [2020-10-05 23:48:35,887 INFO L226 Difference]: Without dead ends: 1976 [2020-10-05 23:48:35,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-05 23:48:35,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2020-10-05 23:48:35,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1930. [2020-10-05 23:48:35,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1930 states. [2020-10-05 23:48:35,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 2470 transitions. [2020-10-05 23:48:35,916 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 2470 transitions. Word has length 124 [2020-10-05 23:48:35,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:35,917 INFO L479 AbstractCegarLoop]: Abstraction has 1930 states and 2470 transitions. [2020-10-05 23:48:35,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-05 23:48:35,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 2470 transitions. [2020-10-05 23:48:35,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-05 23:48:35,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:35,923 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:36,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-05 23:48:36,137 INFO L427 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:36,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:36,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1152246053, now seen corresponding path program 26 times [2020-10-05 23:48:36,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:36,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735893591] [2020-10-05 23:48:36,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:36,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-05 23:48:36,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735893591] [2020-10-05 23:48:36,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1394454205] [2020-10-05 23:48:36,362 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 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:36,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:48:36,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:48:36,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-05 23:48:36,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:36,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1027 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-05 23:48:36,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:36,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 17 [2020-10-05 23:48:36,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319772123] [2020-10-05 23:48:36,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-05 23:48:36,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:36,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-05 23:48:36,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:48:36,526 INFO L87 Difference]: Start difference. First operand 1930 states and 2470 transitions. Second operand 17 states. [2020-10-05 23:48:36,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:36,605 INFO L93 Difference]: Finished difference Result 2105 states and 2676 transitions. [2020-10-05 23:48:36,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 23:48:36,606 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 127 [2020-10-05 23:48:36,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:36,615 INFO L225 Difference]: With dead ends: 2105 [2020-10-05 23:48:36,615 INFO L226 Difference]: Without dead ends: 2105 [2020-10-05 23:48:36,616 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-05 23:48:36,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2020-10-05 23:48:36,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 2059. [2020-10-05 23:48:36,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2059 states. [2020-10-05 23:48:36,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 2626 transitions. [2020-10-05 23:48:36,646 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 2626 transitions. Word has length 127 [2020-10-05 23:48:36,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:36,646 INFO L479 AbstractCegarLoop]: Abstraction has 2059 states and 2626 transitions. [2020-10-05 23:48:36,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-05 23:48:36,646 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 2626 transitions. [2020-10-05 23:48:36,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-05 23:48:36,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:36,652 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:36,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-05 23:48:36,864 INFO L427 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:36,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:36,865 INFO L82 PathProgramCache]: Analyzing trace with hash 210393279, now seen corresponding path program 27 times [2020-10-05 23:48:36,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:36,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432803626] [2020-10-05 23:48:36,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:36,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:37,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-05 23:48:37,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432803626] [2020-10-05 23:48:37,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143449897] [2020-10-05 23:48:37,121 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 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:37,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2020-10-05 23:48:37,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:48:37,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-05 23:48:37,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:37,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1067 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-05 23:48:37,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:37,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 18 [2020-10-05 23:48:37,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57164824] [2020-10-05 23:48:37,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-05 23:48:37,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:37,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-05 23:48:37,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-05 23:48:37,459 INFO L87 Difference]: Start difference. First operand 2059 states and 2626 transitions. Second operand 18 states. [2020-10-05 23:48:37,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:37,533 INFO L93 Difference]: Finished difference Result 2234 states and 2832 transitions. [2020-10-05 23:48:37,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-05 23:48:37,534 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 130 [2020-10-05 23:48:37,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:37,542 INFO L225 Difference]: With dead ends: 2234 [2020-10-05 23:48:37,542 INFO L226 Difference]: Without dead ends: 2234 [2020-10-05 23:48:37,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-05 23:48:37,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2234 states. [2020-10-05 23:48:37,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2234 to 2188. [2020-10-05 23:48:37,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2188 states. [2020-10-05 23:48:37,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 2782 transitions. [2020-10-05 23:48:37,570 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 2782 transitions. Word has length 130 [2020-10-05 23:48:37,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:37,570 INFO L479 AbstractCegarLoop]: Abstraction has 2188 states and 2782 transitions. [2020-10-05 23:48:37,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-05 23:48:37,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 2782 transitions. [2020-10-05 23:48:37,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-05 23:48:37,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:37,576 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:37,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-05 23:48:37,790 INFO L427 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:37,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:37,790 INFO L82 PathProgramCache]: Analyzing trace with hash 495747813, now seen corresponding path program 28 times [2020-10-05 23:48:37,791 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:37,791 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087312286] [2020-10-05 23:48:37,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:38,178 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-05 23:48:38,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087312286] [2020-10-05 23:48:38,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510691006] [2020-10-05 23:48:38,179 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:39,422 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:48:39,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:48:39,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-05 23:48:39,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:39,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-05 23:48:39,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:39,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 19 [2020-10-05 23:48:39,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501542143] [2020-10-05 23:48:39,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-05 23:48:39,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:39,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-05 23:48:39,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-05 23:48:39,469 INFO L87 Difference]: Start difference. First operand 2188 states and 2782 transitions. Second operand 19 states. [2020-10-05 23:48:39,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:39,557 INFO L93 Difference]: Finished difference Result 2363 states and 2988 transitions. [2020-10-05 23:48:39,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-05 23:48:39,558 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 133 [2020-10-05 23:48:39,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:39,566 INFO L225 Difference]: With dead ends: 2363 [2020-10-05 23:48:39,566 INFO L226 Difference]: Without dead ends: 2363 [2020-10-05 23:48:39,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-05 23:48:39,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2020-10-05 23:48:39,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 2317. [2020-10-05 23:48:39,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2317 states. [2020-10-05 23:48:39,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 2938 transitions. [2020-10-05 23:48:39,588 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 2938 transitions. Word has length 133 [2020-10-05 23:48:39,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:39,588 INFO L479 AbstractCegarLoop]: Abstraction has 2317 states and 2938 transitions. [2020-10-05 23:48:39,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-05 23:48:39,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 2938 transitions. [2020-10-05 23:48:39,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-05 23:48:39,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:39,592 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:39,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:39,806 INFO L427 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:39,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:39,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1752391423, now seen corresponding path program 29 times [2020-10-05 23:48:39,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:39,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62994580] [2020-10-05 23:48:39,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:40,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-05 23:48:40,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62994580] [2020-10-05 23:48:40,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410914417] [2020-10-05 23:48:40,064 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 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:40,323 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2020-10-05 23:48:40,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:48:40,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-05 23:48:40,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:40,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1156 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-05 23:48:40,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:40,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 20 [2020-10-05 23:48:40,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475042626] [2020-10-05 23:48:40,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-05 23:48:40,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:40,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-05 23:48:40,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-05 23:48:40,369 INFO L87 Difference]: Start difference. First operand 2317 states and 2938 transitions. Second operand 20 states. [2020-10-05 23:48:40,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:40,485 INFO L93 Difference]: Finished difference Result 2492 states and 3144 transitions. [2020-10-05 23:48:40,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 23:48:40,486 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 136 [2020-10-05 23:48:40,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:40,494 INFO L225 Difference]: With dead ends: 2492 [2020-10-05 23:48:40,495 INFO L226 Difference]: Without dead ends: 2492 [2020-10-05 23:48:40,495 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-05 23:48:40,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2492 states. [2020-10-05 23:48:40,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2492 to 2446. [2020-10-05 23:48:40,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2446 states. [2020-10-05 23:48:40,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2446 states to 2446 states and 3094 transitions. [2020-10-05 23:48:40,517 INFO L78 Accepts]: Start accepts. Automaton has 2446 states and 3094 transitions. Word has length 136 [2020-10-05 23:48:40,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:40,517 INFO L479 AbstractCegarLoop]: Abstraction has 2446 states and 3094 transitions. [2020-10-05 23:48:40,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-05 23:48:40,518 INFO L276 IsEmpty]: Start isEmpty. Operand 2446 states and 3094 transitions. [2020-10-05 23:48:40,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-05 23:48:40,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:40,521 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:40,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-10-05 23:48:40,729 INFO L427 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:40,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:40,729 INFO L82 PathProgramCache]: Analyzing trace with hash -807742299, now seen corresponding path program 30 times [2020-10-05 23:48:40,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:40,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382494186] [2020-10-05 23:48:40,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:41,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-05 23:48:41,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382494186] [2020-10-05 23:48:41,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759400054] [2020-10-05 23:48:41,017 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:41,512 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2020-10-05 23:48:41,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:48:41,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-05 23:48:41,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:41,581 INFO L134 CoverageAnalysis]: Checked inductivity of 1205 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-05 23:48:41,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:41,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 21 [2020-10-05 23:48:41,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740586391] [2020-10-05 23:48:41,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-05 23:48:41,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:41,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-05 23:48:41,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-05 23:48:41,584 INFO L87 Difference]: Start difference. First operand 2446 states and 3094 transitions. Second operand 21 states. [2020-10-05 23:48:41,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:41,670 INFO L93 Difference]: Finished difference Result 2621 states and 3300 transitions. [2020-10-05 23:48:41,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-05 23:48:41,671 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 139 [2020-10-05 23:48:41,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:41,675 INFO L225 Difference]: With dead ends: 2621 [2020-10-05 23:48:41,675 INFO L226 Difference]: Without dead ends: 2621 [2020-10-05 23:48:41,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-05 23:48:41,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2621 states. [2020-10-05 23:48:41,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2621 to 2575. [2020-10-05 23:48:41,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2575 states. [2020-10-05 23:48:41,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2575 states to 2575 states and 3250 transitions. [2020-10-05 23:48:41,707 INFO L78 Accepts]: Start accepts. Automaton has 2575 states and 3250 transitions. Word has length 139 [2020-10-05 23:48:41,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:41,707 INFO L479 AbstractCegarLoop]: Abstraction has 2575 states and 3250 transitions. [2020-10-05 23:48:41,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-05 23:48:41,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2575 states and 3250 transitions. [2020-10-05 23:48:41,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-05 23:48:41,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:41,711 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:41,916 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:41,917 INFO L427 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:41,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:41,917 INFO L82 PathProgramCache]: Analyzing trace with hash 277787967, now seen corresponding path program 31 times [2020-10-05 23:48:41,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:41,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283289047] [2020-10-05 23:48:41,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:42,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-05 23:48:42,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283289047] [2020-10-05 23:48:42,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242891450] [2020-10-05 23:48:42,274 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:42,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-05 23:48:42,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:42,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1257 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-05 23:48:42,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:42,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 22 [2020-10-05 23:48:42,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426439782] [2020-10-05 23:48:42,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-05 23:48:42,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:42,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-05 23:48:42,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-05 23:48:42,446 INFO L87 Difference]: Start difference. First operand 2575 states and 3250 transitions. Second operand 22 states. [2020-10-05 23:48:42,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:42,565 INFO L93 Difference]: Finished difference Result 2750 states and 3456 transitions. [2020-10-05 23:48:42,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-05 23:48:42,565 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 142 [2020-10-05 23:48:42,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:42,569 INFO L225 Difference]: With dead ends: 2750 [2020-10-05 23:48:42,569 INFO L226 Difference]: Without dead ends: 2750 [2020-10-05 23:48:42,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-05 23:48:42,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2750 states. [2020-10-05 23:48:42,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2750 to 2704. [2020-10-05 23:48:42,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2704 states. [2020-10-05 23:48:42,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2704 states to 2704 states and 3406 transitions. [2020-10-05 23:48:42,599 INFO L78 Accepts]: Start accepts. Automaton has 2704 states and 3406 transitions. Word has length 142 [2020-10-05 23:48:42,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:42,600 INFO L479 AbstractCegarLoop]: Abstraction has 2704 states and 3406 transitions. [2020-10-05 23:48:42,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-05 23:48:42,600 INFO L276 IsEmpty]: Start isEmpty. Operand 2704 states and 3406 transitions. [2020-10-05 23:48:42,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-05 23:48:42,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:42,605 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:42,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-10-05 23:48:42,819 INFO L427 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:42,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:42,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1793796507, now seen corresponding path program 32 times [2020-10-05 23:48:42,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:42,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369189364] [2020-10-05 23:48:42,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:43,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-05 23:48:43,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369189364] [2020-10-05 23:48:43,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018814557] [2020-10-05 23:48:43,162 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 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:43,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:48:43,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:48:43,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-05 23:48:43,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:43,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1312 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 780 trivial. 0 not checked. [2020-10-05 23:48:43,335 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:43,335 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 23 [2020-10-05 23:48:43,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978645038] [2020-10-05 23:48:43,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-05 23:48:43,336 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:43,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-05 23:48:43,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:48:43,336 INFO L87 Difference]: Start difference. First operand 2704 states and 3406 transitions. Second operand 23 states. [2020-10-05 23:48:43,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:48:43,449 INFO L93 Difference]: Finished difference Result 2833 states and 3562 transitions. [2020-10-05 23:48:43,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-05 23:48:43,450 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 145 [2020-10-05 23:48:43,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:48:43,455 INFO L225 Difference]: With dead ends: 2833 [2020-10-05 23:48:43,455 INFO L226 Difference]: Without dead ends: 2833 [2020-10-05 23:48:43,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:48:43,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2833 states. [2020-10-05 23:48:43,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2833 to 2833. [2020-10-05 23:48:43,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2833 states. [2020-10-05 23:48:43,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2833 states to 2833 states and 3562 transitions. [2020-10-05 23:48:43,505 INFO L78 Accepts]: Start accepts. Automaton has 2833 states and 3562 transitions. Word has length 145 [2020-10-05 23:48:43,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:48:43,506 INFO L479 AbstractCegarLoop]: Abstraction has 2833 states and 3562 transitions. [2020-10-05 23:48:43,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-05 23:48:43,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2833 states and 3562 transitions. [2020-10-05 23:48:43,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-05 23:48:43,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:48:43,511 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:48:43,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-10-05 23:48:43,725 INFO L427 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:48:43,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:48:43,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1981785217, now seen corresponding path program 33 times [2020-10-05 23:48:43,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:48:43,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145075005] [2020-10-05 23:48:43,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:48:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:48:46,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:48:46,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145075005] [2020-10-05 23:48:46,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676082563] [2020-10-05 23:48:46,994 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 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:48:47,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2020-10-05 23:48:47,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:48:47,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 163 conjunts are in the unsatisfiable core [2020-10-05 23:48:47,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:48:47,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:48:47,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:48:47,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2020-10-05 23:48:47,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869674755] [2020-10-05 23:48:47,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-05 23:48:47,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:48:47,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-05 23:48:47,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2020-10-05 23:48:47,810 INFO L87 Difference]: Start difference. First operand 2833 states and 3562 transitions. Second operand 63 states. [2020-10-05 23:50:10,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:50:10,324 INFO L93 Difference]: Finished difference Result 32926 states and 45933 transitions. [2020-10-05 23:50:10,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 633 states. [2020-10-05 23:50:10,325 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 148 [2020-10-05 23:50:10,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:50:10,409 INFO L225 Difference]: With dead ends: 32926 [2020-10-05 23:50:10,409 INFO L226 Difference]: Without dead ends: 32924 [2020-10-05 23:50:10,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 145 SyntacticMatches, 2 SemanticMatches, 632 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162735 ImplicationChecksByTransitivity, 33.2s TimeCoverageRelationStatistics Valid=2407, Invalid=398915, Unknown=0, NotChecked=0, Total=401322 [2020-10-05 23:50:10,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32924 states. [2020-10-05 23:50:10,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32924 to 2967. [2020-10-05 23:50:10,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2967 states. [2020-10-05 23:50:10,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2967 states to 2967 states and 3794 transitions. [2020-10-05 23:50:10,614 INFO L78 Accepts]: Start accepts. Automaton has 2967 states and 3794 transitions. Word has length 148 [2020-10-05 23:50:10,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:50:10,615 INFO L479 AbstractCegarLoop]: Abstraction has 2967 states and 3794 transitions. [2020-10-05 23:50:10,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-10-05 23:50:10,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2967 states and 3794 transitions. [2020-10-05 23:50:10,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-05 23:50:10,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:50:10,621 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:50:10,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-10-05 23:50:10,836 INFO L427 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:50:10,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:50:10,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1970430061, now seen corresponding path program 34 times [2020-10-05 23:50:10,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:50:10,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321212200] [2020-10-05 23:50:10,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:50:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:50:13,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:50:13,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321212200] [2020-10-05 23:50:13,999 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398970540] [2020-10-05 23:50:13,999 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:50:16,036 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-05 23:50:16,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:50:16,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 163 conjunts are in the unsatisfiable core [2020-10-05 23:50:16,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:50:16,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:50:16,177 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:50:16,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2020-10-05 23:50:16,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557840348] [2020-10-05 23:50:16,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-05 23:50:16,178 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:50:16,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-05 23:50:16,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2020-10-05 23:50:16,179 INFO L87 Difference]: Start difference. First operand 2967 states and 3794 transitions. Second operand 63 states. [2020-10-05 23:51:07,017 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-10-05 23:51:37,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:37,100 INFO L93 Difference]: Finished difference Result 30945 states and 43173 transitions. [2020-10-05 23:51:37,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 612 states. [2020-10-05 23:51:37,101 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 148 [2020-10-05 23:51:37,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:37,148 INFO L225 Difference]: With dead ends: 30945 [2020-10-05 23:51:37,148 INFO L226 Difference]: Without dead ends: 30943 [2020-10-05 23:51:37,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 145 SyntacticMatches, 2 SemanticMatches, 612 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151525 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=2327, Invalid=374055, Unknown=0, NotChecked=0, Total=376382 [2020-10-05 23:51:37,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30943 states. [2020-10-05 23:51:37,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30943 to 2973. [2020-10-05 23:51:37,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2973 states. [2020-10-05 23:51:37,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2973 states to 2973 states and 3801 transitions. [2020-10-05 23:51:37,360 INFO L78 Accepts]: Start accepts. Automaton has 2973 states and 3801 transitions. Word has length 148 [2020-10-05 23:51:37,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:37,361 INFO L479 AbstractCegarLoop]: Abstraction has 2973 states and 3801 transitions. [2020-10-05 23:51:37,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-10-05 23:51:37,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2973 states and 3801 transitions. [2020-10-05 23:51:37,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-05 23:51:37,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:37,366 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:37,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-10-05 23:51:37,578 INFO L427 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-05 23:51:37,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:37,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1092472257, now seen corresponding path program 35 times [2020-10-05 23:51:37,579 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:37,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338575852] [2020-10-05 23:51:37,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:40,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:40,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338575852] [2020-10-05 23:51:40,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244837713] [2020-10-05 23:51:40,943 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 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:51:41,221 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2020-10-05 23:51:41,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:51:41,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 163 conjunts are in the unsatisfiable core [2020-10-05 23:51:41,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:41,359 INFO L134 CoverageAnalysis]: Checked inductivity of 1370 backedges. 0 proven. 1370 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:41,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:51:41,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 61 [2020-10-05 23:51:41,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467103371] [2020-10-05 23:51:41,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-05 23:51:41,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:41,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-05 23:51:41,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=3783, Unknown=0, NotChecked=0, Total=3906 [2020-10-05 23:51:41,364 INFO L87 Difference]: Start difference. First operand 2973 states and 3801 transitions. Second operand 63 states. Received shutdown request... [2020-10-05 23:51:49,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-10-05 23:51:49,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-05 23:51:49,609 WARN L544 AbstractCegarLoop]: Verification canceled [2020-10-05 23:51:49,614 WARN L228 ceAbstractionStarter]: Timeout [2020-10-05 23:51:49,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 11:51:49 BasicIcfg [2020-10-05 23:51:49,614 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 23:51:49,615 INFO L168 Benchmark]: Toolchain (without parser) took 237218.87 ms. Allocated memory was 139.5 MB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Free memory was 100.5 MB in the beginning and 260.6 MB in the end (delta: -160.1 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2020-10-05 23:51:49,615 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-05 23:51:49,616 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1044.95 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 100.2 MB in the beginning and 107.6 MB in the end (delta: -7.4 MB). Peak memory consumption was 61.8 MB. Max. memory is 7.1 GB. [2020-10-05 23:51:49,616 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.52 ms. Allocated memory is still 203.4 MB. Free memory was 107.6 MB in the beginning and 104.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-05 23:51:49,616 INFO L168 Benchmark]: Boogie Preprocessor took 36.89 ms. Allocated memory is still 203.4 MB. Free memory was 104.9 MB in the beginning and 103.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-05 23:51:49,616 INFO L168 Benchmark]: RCFGBuilder took 505.32 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 103.5 MB in the beginning and 196.3 MB in the end (delta: -92.8 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2020-10-05 23:51:49,617 INFO L168 Benchmark]: TraceAbstraction took 235563.16 ms. Allocated memory was 236.5 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 196.3 MB in the beginning and 260.6 MB in the end (delta: -64.3 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2020-10-05 23:51:49,618 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1044.95 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 100.2 MB in the beginning and 107.6 MB in the end (delta: -7.4 MB). Peak memory consumption was 61.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 63.52 ms. Allocated memory is still 203.4 MB. Free memory was 107.6 MB in the beginning and 104.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 36.89 ms. Allocated memory is still 203.4 MB. Free memory was 104.9 MB in the beginning and 103.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 505.32 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 103.5 MB in the beginning and 196.3 MB in the end (delta: -92.8 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235563.16 ms. Allocated memory was 236.5 MB in the beginning and 1.3 GB in the end (delta: 1.1 GB). Free memory was 196.3 MB in the beginning and 260.6 MB in the end (delta: -64.3 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.9s, 78 ProgramPointsBefore, 19 ProgramPointsAfterwards, 81 TransitionsBefore, 17 TransitionsAfterwards, 646 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 6 ConcurrentYvCompositions, 5 ChoiceCompositions, 317 VarBasedMoverChecksPositive, 13 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 738 CheckedPairsTotal, 70 TotalNumberOfCompositions - TimeoutResultAtElement [Line: 2]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 2). Cancelled while BasicCegarLoop was constructing difference of abstraction (2973states) and FLOYD_HOARE automaton (currently 71 states, 63 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 119 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 235.4s, OverallIterations: 37, TraceHistogramMax: 20, AutomataDifference: 194.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 5408 SDtfs, 13694 SDslu, 282790 SDs, 0 SdLazy, 161944 SolverSat, 2923 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 76.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5987 GetRequests, 3628 SyntacticMatches, 6 SemanticMatches, 2352 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349972 ImplicationChecksByTransitivity, 94.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2973occurred in iteration=36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 36 MinimizatonAttempts, 59079 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.8s SsaConstructionTime, 8.7s SatisfiabilityAnalysisTime, 16.9s InterpolantComputationTime, 6265 NumberOfCodeBlocks, 6034 NumberOfCodeBlocksAsserted, 315 NumberOfCheckSat, 6193 ConstructedInterpolants, 0 QuantifiedInterpolants, 2419741 SizeOfPredicates, 153 NumberOfNonLiveVariables, 11795 ConjunctsInSsa, 863 ConjunctsInUnsatCore, 72 InterpolantComputations, 3 PerfectInterpolantSequences, 20421/43245 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 could not prove your program: Timeout Completed graceful shutdown