/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/indexer.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 22:34:09,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 22:34:09,749 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 22:34:09,790 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 22:34:09,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 22:34:09,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 22:34:09,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 22:34:09,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 22:34:09,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 22:34:09,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 22:34:09,813 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 22:34:09,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 22:34:09,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 22:34:09,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 22:34:09,819 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 22:34:09,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 22:34:09,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 22:34:09,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 22:34:09,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 22:34:09,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 22:34:09,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 22:34:09,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 22:34:09,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 22:34:09,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 22:34:09,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-21 22:34:09,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-21 22:34:09,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-21 22:34:09,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-21 22:34:09,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-21 22:34:09,860 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-21 22:34:09,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 22:34:09,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 22:34:09,866 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 22:34:09,867 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 22:34:09,868 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 22:34:09,868 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 22:34:09,869 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 22:34:09,869 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 22:34:09,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 22:34:09,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 22:34:09,872 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 22:34:09,873 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 [2020-10-21 22:34:09,912 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 22:34:09,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 22:34:09,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 22:34:09,914 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 22:34:09,915 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 22:34:09,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 22:34:09,915 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 22:34:09,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 22:34:09,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 22:34:09,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 22:34:09,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 22:34:09,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 22:34:09,918 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 22:34:09,918 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 22:34:09,918 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 22:34:09,918 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 22:34:09,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 22:34:09,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 22:34:09,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 22:34:09,919 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 22:34:09,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 22:34:09,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 22:34:09,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 22:34:09,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-21 22:34:09,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 22:34:09,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 22:34:09,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 22:34:09,921 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-21 22:34:09,921 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 22:34:10,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 22:34:10,250 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 22:34:10,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 22:34:10,254 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 22:34:10,254 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 22:34:10,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/indexer.i [2020-10-21 22:34:10,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4461978d5/ae402f51a9424b89bc9d61b8d4b07c54/FLAG0779f6dfc [2020-10-21 22:34:10,945 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 22:34:10,946 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/indexer.i [2020-10-21 22:34:10,963 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4461978d5/ae402f51a9424b89bc9d61b8d4b07c54/FLAG0779f6dfc [2020-10-21 22:34:11,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4461978d5/ae402f51a9424b89bc9d61b8d4b07c54 [2020-10-21 22:34:11,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 22:34:11,193 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 22:34:11,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 22:34:11,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 22:34:11,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 22:34:11,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 10:34:11" (1/1) ... [2020-10-21 22:34:11,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@271f1582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:34:11, skipping insertion in model container [2020-10-21 22:34:11,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 10:34:11" (1/1) ... [2020-10-21 22:34:11,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 22:34:11,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 22:34:11,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 22:34:11,989 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 22:34:12,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 22:34:12,186 INFO L208 MainTranslator]: Completed translation [2020-10-21 22:34:12,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:34:12 WrapperNode [2020-10-21 22:34:12,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 22:34:12,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 22:34:12,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 22:34:12,189 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 22:34:12,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:34:12" (1/1) ... [2020-10-21 22:34:12,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:34:12" (1/1) ... [2020-10-21 22:34:12,262 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 22:34:12,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 22:34:12,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 22:34:12,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 22:34:12,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:34:12" (1/1) ... [2020-10-21 22:34:12,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:34:12" (1/1) ... [2020-10-21 22:34:12,278 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:34:12" (1/1) ... [2020-10-21 22:34:12,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:34:12" (1/1) ... [2020-10-21 22:34:12,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:34:12" (1/1) ... [2020-10-21 22:34:12,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:34:12" (1/1) ... [2020-10-21 22:34:12,295 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:34:12" (1/1) ... [2020-10-21 22:34:12,299 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 22:34:12,300 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 22:34:12,300 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 22:34:12,300 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 22:34:12,301 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:34:12" (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 [2020-10-21 22:34:12,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 22:34:12,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 22:34:12,381 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-21 22:34:12,381 INFO L130 BoogieDeclarations]: Found specification of procedure thread_routine [2020-10-21 22:34:12,381 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_routine [2020-10-21 22:34:12,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 22:34:12,383 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2020-10-21 22:34:12,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 22:34:12,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 22:34:12,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 22:34:12,388 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 22:34:12,846 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 22:34:12,846 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-21 22:34:12,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:34:12 BoogieIcfgContainer [2020-10-21 22:34:12,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 22:34:12,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 22:34:12,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 22:34:12,855 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 22:34:12,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 10:34:11" (1/3) ... [2020-10-21 22:34:12,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bddece1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 10:34:12, skipping insertion in model container [2020-10-21 22:34:12,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:34:12" (2/3) ... [2020-10-21 22:34:12,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bddece1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 10:34:12, skipping insertion in model container [2020-10-21 22:34:12,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:34:12" (3/3) ... [2020-10-21 22:34:12,859 INFO L111 eAbstractionObserver]: Analyzing ICFG indexer.i [2020-10-21 22:34:12,870 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 22:34:12,871 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-21 22:34:12,878 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 22:34:12,879 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 22:34:12,930 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,931 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,931 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,931 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,932 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,932 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,932 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,932 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,932 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,933 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,933 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,933 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,933 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,933 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,934 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,934 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,934 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,934 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,935 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,935 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,935 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,935 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,936 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,936 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,936 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,936 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,936 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,937 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,937 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,937 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,937 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,938 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,938 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,938 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,938 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,938 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,939 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,939 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,939 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,939 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,940 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,940 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,940 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,940 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,940 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,940 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,941 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,941 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,941 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,941 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,942 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,942 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,942 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,942 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,942 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,943 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,943 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,943 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,943 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,943 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,944 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,944 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,944 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,944 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,945 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,945 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,945 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,945 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,945 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,946 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,946 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,946 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,946 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,946 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,947 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,947 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,947 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,947 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,947 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,948 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,948 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,948 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,948 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,948 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,949 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,949 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,949 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,950 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,950 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,950 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,950 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,954 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,954 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~w~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,954 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~new_val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,955 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,955 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,955 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~h~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,955 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~h not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,955 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,956 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~ret_val~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,956 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,956 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,956 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,956 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~val not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,957 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,957 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~m~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,957 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,957 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,957 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,958 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,958 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~tid~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,958 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,958 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,958 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,959 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_cas_~tab.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,959 WARN L313 ript$VariableManager]: TermVariabe thread_routineThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,959 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,959 WARN L313 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_reach_error_#t~nondet2.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:34:12,966 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-10-21 22:34:12,981 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-21 22:34:13,004 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:34:13,004 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:34:13,005 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-21 22:34:13,005 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:34:13,005 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:34:13,005 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:34:13,005 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:34:13,005 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:34:13,021 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-21 22:34:13,022 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 114 transitions, 236 flow [2020-10-21 22:34:13,025 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 114 transitions, 236 flow [2020-10-21 22:34:13,027 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 102 places, 114 transitions, 236 flow [2020-10-21 22:34:13,098 INFO L129 PetriNetUnfolder]: 19/135 cut-off events. [2020-10-21 22:34:13,098 INFO L130 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2020-10-21 22:34:13,111 INFO L80 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 135 events. 19/135 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 214 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 81. Up to 4 conditions per place. [2020-10-21 22:34:13,119 INFO L116 LiptonReduction]: Number of co-enabled transitions 2912 [2020-10-21 22:34:15,381 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 79 [2020-10-21 22:34:15,514 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-21 22:34:15,930 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-10-21 22:34:16,108 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-21 22:34:16,214 INFO L131 LiptonReduction]: Checked pairs total: 2928 [2020-10-21 22:34:16,214 INFO L133 LiptonReduction]: Total number of compositions: 110 [2020-10-21 22:34:16,221 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 25 transitions, 58 flow [2020-10-21 22:34:16,234 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 73 states. [2020-10-21 22:34:16,236 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-10-21 22:34:16,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-21 22:34:16,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:34:16,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:34:16,244 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:34:16,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:34:16,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1236597171, now seen corresponding path program 1 times [2020-10-21 22:34:16,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:34:16,261 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503193928] [2020-10-21 22:34:16,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:34:16,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:34:16,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:34:16,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503193928] [2020-10-21 22:34:16,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:34:16,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-21 22:34:16,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488750281] [2020-10-21 22:34:16,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:34:16,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:34:16,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:34:16,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:34:16,466 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 3 states. [2020-10-21 22:34:16,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:34:16,523 INFO L93 Difference]: Finished difference Result 61 states and 119 transitions. [2020-10-21 22:34:16,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:34:16,525 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-10-21 22:34:16,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:34:16,537 INFO L225 Difference]: With dead ends: 61 [2020-10-21 22:34:16,538 INFO L226 Difference]: Without dead ends: 53 [2020-10-21 22:34:16,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:34:16,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-21 22:34:16,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-21 22:34:16,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-21 22:34:16,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 108 transitions. [2020-10-21 22:34:16,584 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 108 transitions. Word has length 7 [2020-10-21 22:34:16,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:34:16,585 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 108 transitions. [2020-10-21 22:34:16,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:34:16,585 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 108 transitions. [2020-10-21 22:34:16,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-21 22:34:16,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:34:16,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:34:16,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 22:34:16,587 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:34:16,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:34:16,587 INFO L82 PathProgramCache]: Analyzing trace with hash -73469045, now seen corresponding path program 1 times [2020-10-21 22:34:16,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:34:16,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081744693] [2020-10-21 22:34:16,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:34:16,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:34:16,669 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:34:16,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081744693] [2020-10-21 22:34:16,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419204880] [2020-10-21 22:34:16,670 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 [2020-10-21 22:34:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:34:16,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2020-10-21 22:34:16,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:34:16,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:34:16,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:34:16,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-10-21 22:34:16,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625901741] [2020-10-21 22:34:16,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-21 22:34:16,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:34:16,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-21 22:34:16,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-21 22:34:16,773 INFO L87 Difference]: Start difference. First operand 53 states and 108 transitions. Second operand 4 states. [2020-10-21 22:34:16,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:34:16,796 INFO L93 Difference]: Finished difference Result 42 states and 81 transitions. [2020-10-21 22:34:16,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-21 22:34:16,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-21 22:34:16,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:34:16,797 INFO L225 Difference]: With dead ends: 42 [2020-10-21 22:34:16,798 INFO L226 Difference]: Without dead ends: 42 [2020-10-21 22:34:16,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-21 22:34:16,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-21 22:34:16,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-21 22:34:16,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-21 22:34:16,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 81 transitions. [2020-10-21 22:34:16,805 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 81 transitions. Word has length 8 [2020-10-21 22:34:16,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:34:16,806 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 81 transitions. [2020-10-21 22:34:16,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-21 22:34:16,806 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 81 transitions. [2020-10-21 22:34:16,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-21 22:34:16,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:34:16,807 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:34:17,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-10-21 22:34:17,022 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:34:17,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:34:17,024 INFO L82 PathProgramCache]: Analyzing trace with hash -2030816077, now seen corresponding path program 2 times [2020-10-21 22:34:17,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:34:17,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458683133] [2020-10-21 22:34:17,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:34:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:34:17,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:34:17,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458683133] [2020-10-21 22:34:17,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437441395] [2020-10-21 22:34:17,087 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 [2020-10-21 22:34:17,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-21 22:34:17,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:34:17,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-21 22:34:17,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:34:17,224 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 195 treesize of output 193 [2020-10-21 22:34:17,227 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-21 22:34:17,297 INFO L625 ElimStorePlain]: treesize reduction 169, result has 11.1 percent of original size [2020-10-21 22:34:17,301 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-21 22:34:17,302 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:23, output treesize:4 [2020-10-21 22:34:17,326 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-21 22:34:17,326 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-21 22:34:17,332 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-21 22:34:17,332 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-21 22:34:17,333 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2020-10-21 22:34:17,364 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2020-10-21 22:34:17,366 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-21 22:34:17,372 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-21 22:34:17,375 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-21 22:34:17,375 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:31, output treesize:27 [2020-10-21 22:34:17,448 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 17 [2020-10-21 22:34:17,450 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-21 22:34:17,456 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-21 22:34:17,458 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-21 22:34:17,458 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:37, output treesize:7 [2020-10-21 22:34:17,473 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:34:17,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-21 22:34:17,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 10 [2020-10-21 22:34:17,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859884649] [2020-10-21 22:34:17,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-21 22:34:17,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:34:17,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-21 22:34:17,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-21 22:34:17,475 INFO L87 Difference]: Start difference. First operand 42 states and 81 transitions. Second operand 8 states. [2020-10-21 22:34:25,636 WARN L193 SmtUtils]: Spent 8.09 s on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-10-21 22:34:29,777 WARN L193 SmtUtils]: Spent 4.04 s on a formula simplification that was a NOOP. DAG size: 35 [2020-10-21 22:34:37,857 WARN L193 SmtUtils]: Spent 8.06 s on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-21 22:34:45,523 WARN L193 SmtUtils]: Spent 4.02 s on a formula simplification that was a NOOP. DAG size: 39 [2020-10-21 22:34:59,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:34:59,009 INFO L93 Difference]: Finished difference Result 102 states and 207 transitions. [2020-10-21 22:34:59,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:34:59,010 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-10-21 22:34:59,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:34:59,013 INFO L225 Difference]: With dead ends: 102 [2020-10-21 22:34:59,013 INFO L226 Difference]: Without dead ends: 102 [2020-10-21 22:34:59,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 24.5s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2020-10-21 22:34:59,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-21 22:34:59,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 52. [2020-10-21 22:34:59,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-21 22:34:59,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 106 transitions. [2020-10-21 22:34:59,023 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 106 transitions. Word has length 9 [2020-10-21 22:34:59,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:34:59,024 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 106 transitions. [2020-10-21 22:34:59,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-21 22:34:59,024 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 106 transitions. [2020-10-21 22:34:59,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-21 22:34:59,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:34:59,025 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:34:59,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:34:59,226 INFO L429 AbstractCegarLoop]: === Iteration 4 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:34:59,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:34:59,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1699880460, now seen corresponding path program 1 times [2020-10-21 22:34:59,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:34:59,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621484444] [2020-10-21 22:34:59,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:34:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:34:59,289 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-21 22:34:59,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621484444] [2020-10-21 22:34:59,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048131821] [2020-10-21 22:34:59,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:34:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:34:59,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-21 22:34:59,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:34:59,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-21 22:34:59,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:34:59,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-10-21 22:34:59,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158474567] [2020-10-21 22:34:59,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:34:59,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:34:59,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:34:59,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:34:59,367 INFO L87 Difference]: Start difference. First operand 52 states and 106 transitions. Second operand 5 states. [2020-10-21 22:34:59,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:34:59,393 INFO L93 Difference]: Finished difference Result 53 states and 107 transitions. [2020-10-21 22:34:59,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 22:34:59,394 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-21 22:34:59,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:34:59,395 INFO L225 Difference]: With dead ends: 53 [2020-10-21 22:34:59,395 INFO L226 Difference]: Without dead ends: 53 [2020-10-21 22:34:59,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:34:59,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-21 22:34:59,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-21 22:34:59,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-21 22:34:59,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 107 transitions. [2020-10-21 22:34:59,402 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 107 transitions. Word has length 11 [2020-10-21 22:34:59,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:34:59,402 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 107 transitions. [2020-10-21 22:34:59,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:34:59,403 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 107 transitions. [2020-10-21 22:34:59,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-21 22:34:59,403 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:34:59,404 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:34:59,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:34:59,620 INFO L429 AbstractCegarLoop]: === Iteration 5 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:34:59,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:34:59,621 INFO L82 PathProgramCache]: Analyzing trace with hash -254332980, now seen corresponding path program 2 times [2020-10-21 22:34:59,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:34:59,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139342042] [2020-10-21 22:34:59,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:34:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:34:59,680 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-21 22:34:59,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139342042] [2020-10-21 22:34:59,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1817714143] [2020-10-21 22:34:59,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:34:59,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:34:59,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:34:59,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-21 22:34:59,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:34:59,770 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-21 22:34:59,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:34:59,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-10-21 22:34:59,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110457363] [2020-10-21 22:34:59,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-21 22:34:59,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:34:59,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-21 22:34:59,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-21 22:34:59,772 INFO L87 Difference]: Start difference. First operand 53 states and 107 transitions. Second operand 6 states. [2020-10-21 22:34:59,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:34:59,801 INFO L93 Difference]: Finished difference Result 54 states and 108 transitions. [2020-10-21 22:34:59,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:34:59,802 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-10-21 22:34:59,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:34:59,803 INFO L225 Difference]: With dead ends: 54 [2020-10-21 22:34:59,803 INFO L226 Difference]: Without dead ends: 54 [2020-10-21 22:34:59,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-21 22:34:59,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-21 22:34:59,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-21 22:34:59,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-21 22:34:59,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 108 transitions. [2020-10-21 22:34:59,810 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 108 transitions. Word has length 12 [2020-10-21 22:34:59,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:34:59,810 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 108 transitions. [2020-10-21 22:34:59,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-21 22:34:59,811 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 108 transitions. [2020-10-21 22:34:59,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 22:34:59,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:34:59,811 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:35:00,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:35:00,027 INFO L429 AbstractCegarLoop]: === Iteration 6 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:00,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:00,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1607965940, now seen corresponding path program 3 times [2020-10-21 22:35:00,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:00,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469089282] [2020-10-21 22:35:00,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:00,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:00,096 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-21 22:35:00,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469089282] [2020-10-21 22:35:00,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235700309] [2020-10-21 22:35:00,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:35:00,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 22:35:00,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:35:00,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-21 22:35:00,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:00,224 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 [2020-10-21 22:35:00,225 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-21 22:35:00,232 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-21 22:35:00,232 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-21 22:35:00,233 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:7 [2020-10-21 22:35:00,250 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-10-21 22:35:00,251 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-21 22:35:00,255 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-21 22:35:00,256 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-21 22:35:00,256 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:18, output treesize:7 [2020-10-21 22:35:00,270 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-21 22:35:00,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-21 22:35:00,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 12 [2020-10-21 22:35:00,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612272522] [2020-10-21 22:35:00,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:35:00,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:00,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:35:00,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-21 22:35:00,272 INFO L87 Difference]: Start difference. First operand 54 states and 108 transitions. Second operand 7 states. [2020-10-21 22:35:00,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:00,463 INFO L93 Difference]: Finished difference Result 74 states and 150 transitions. [2020-10-21 22:35:00,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-21 22:35:00,469 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-21 22:35:00,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:00,470 INFO L225 Difference]: With dead ends: 74 [2020-10-21 22:35:00,470 INFO L226 Difference]: Without dead ends: 74 [2020-10-21 22:35:00,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2020-10-21 22:35:00,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-21 22:35:00,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 49. [2020-10-21 22:35:00,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-21 22:35:00,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 95 transitions. [2020-10-21 22:35:00,484 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 95 transitions. Word has length 13 [2020-10-21 22:35:00,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:00,485 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 95 transitions. [2020-10-21 22:35:00,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:35:00,485 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 95 transitions. [2020-10-21 22:35:00,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-21 22:35:00,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:00,486 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:00,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-21 22:35:00,687 INFO L429 AbstractCegarLoop]: === Iteration 7 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:00,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:00,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1607959416, now seen corresponding path program 1 times [2020-10-21 22:35:00,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:00,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827912595] [2020-10-21 22:35:00,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:00,744 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:00,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827912595] [2020-10-21 22:35:00,745 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944868919] [2020-10-21 22:35:00,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-21 22:35:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:00,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-21 22:35:00,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:00,826 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:00,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:00,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-21 22:35:00,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080703041] [2020-10-21 22:35:00,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-21 22:35:00,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:00,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-21 22:35:00,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:35:00,829 INFO L87 Difference]: Start difference. First operand 49 states and 95 transitions. Second operand 7 states. [2020-10-21 22:35:00,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:00,856 INFO L93 Difference]: Finished difference Result 50 states and 96 transitions. [2020-10-21 22:35:00,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-21 22:35:00,860 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-10-21 22:35:00,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:00,860 INFO L225 Difference]: With dead ends: 50 [2020-10-21 22:35:00,860 INFO L226 Difference]: Without dead ends: 50 [2020-10-21 22:35:00,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-21 22:35:00,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-21 22:35:00,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-21 22:35:00,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-21 22:35:00,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 96 transitions. [2020-10-21 22:35:00,869 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 96 transitions. Word has length 13 [2020-10-21 22:35:00,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:00,869 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 96 transitions. [2020-10-21 22:35:00,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-21 22:35:00,870 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 96 transitions. [2020-10-21 22:35:00,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-21 22:35:00,870 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:00,871 INFO L422 BasicCegarLoop]: trace histogram [5, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:01,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:35:01,076 INFO L429 AbstractCegarLoop]: === Iteration 8 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:01,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:01,077 INFO L82 PathProgramCache]: Analyzing trace with hash -790316208, now seen corresponding path program 2 times [2020-10-21 22:35:01,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:01,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921839851] [2020-10-21 22:35:01,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:01,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:01,172 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:01,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921839851] [2020-10-21 22:35:01,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419510564] [2020-10-21 22:35:01,172 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 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 [2020-10-21 22:35:01,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:35:01,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:35:01,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-21 22:35:01,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:01,259 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:01,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:01,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-10-21 22:35:01,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299136729] [2020-10-21 22:35:01,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-21 22:35:01,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:01,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-21 22:35:01,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-21 22:35:01,261 INFO L87 Difference]: Start difference. First operand 50 states and 96 transitions. Second operand 8 states. [2020-10-21 22:35:01,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:01,294 INFO L93 Difference]: Finished difference Result 51 states and 97 transitions. [2020-10-21 22:35:01,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-21 22:35:01,295 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-21 22:35:01,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:01,296 INFO L225 Difference]: With dead ends: 51 [2020-10-21 22:35:01,296 INFO L226 Difference]: Without dead ends: 51 [2020-10-21 22:35:01,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-21 22:35:01,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-21 22:35:01,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-21 22:35:01,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-21 22:35:01,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 97 transitions. [2020-10-21 22:35:01,301 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 97 transitions. Word has length 14 [2020-10-21 22:35:01,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:01,302 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 97 transitions. [2020-10-21 22:35:01,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-21 22:35:01,302 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 97 transitions. [2020-10-21 22:35:01,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-21 22:35:01,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:01,303 INFO L422 BasicCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:01,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:35:01,514 INFO L429 AbstractCegarLoop]: === Iteration 9 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:01,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:01,515 INFO L82 PathProgramCache]: Analyzing trace with hash -2122416520, now seen corresponding path program 3 times [2020-10-21 22:35:01,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:01,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91604079] [2020-10-21 22:35:01,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:01,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:01,593 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:01,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91604079] [2020-10-21 22:35:01,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126917425] [2020-10-21 22:35:01,594 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 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 [2020-10-21 22:35:01,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-21 22:35:01,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:35:01,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-21 22:35:01,663 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:01,680 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:01,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:01,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-10-21 22:35:01,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648176107] [2020-10-21 22:35:01,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-21 22:35:01,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:01,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-21 22:35:01,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:35:01,682 INFO L87 Difference]: Start difference. First operand 51 states and 97 transitions. Second operand 9 states. [2020-10-21 22:35:01,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:01,716 INFO L93 Difference]: Finished difference Result 52 states and 98 transitions. [2020-10-21 22:35:01,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-21 22:35:01,716 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-21 22:35:01,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:01,717 INFO L225 Difference]: With dead ends: 52 [2020-10-21 22:35:01,717 INFO L226 Difference]: Without dead ends: 52 [2020-10-21 22:35:01,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-21 22:35:01,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-21 22:35:01,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-21 22:35:01,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-21 22:35:01,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 98 transitions. [2020-10-21 22:35:01,722 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 98 transitions. Word has length 15 [2020-10-21 22:35:01,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:01,723 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 98 transitions. [2020-10-21 22:35:01,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-21 22:35:01,723 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 98 transitions. [2020-10-21 22:35:01,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-21 22:35:01,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:01,724 INFO L422 BasicCegarLoop]: trace histogram [7, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:01,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-10-21 22:35:01,935 INFO L429 AbstractCegarLoop]: === Iteration 10 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:01,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:01,936 INFO L82 PathProgramCache]: Analyzing trace with hash -467853232, now seen corresponding path program 4 times [2020-10-21 22:35:01,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:01,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568959908] [2020-10-21 22:35:01,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:02,061 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:02,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568959908] [2020-10-21 22:35:02,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873688443] [2020-10-21 22:35:02,063 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 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 [2020-10-21 22:35:02,148 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 22:35:02,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:35:02,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-21 22:35:02,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:02,184 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:02,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:02,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-10-21 22:35:02,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10658594] [2020-10-21 22:35:02,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-21 22:35:02,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:02,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-21 22:35:02,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-21 22:35:02,186 INFO L87 Difference]: Start difference. First operand 52 states and 98 transitions. Second operand 10 states. [2020-10-21 22:35:02,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:02,222 INFO L93 Difference]: Finished difference Result 53 states and 99 transitions. [2020-10-21 22:35:02,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-21 22:35:02,225 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-10-21 22:35:02,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:02,226 INFO L225 Difference]: With dead ends: 53 [2020-10-21 22:35:02,226 INFO L226 Difference]: Without dead ends: 53 [2020-10-21 22:35:02,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-21 22:35:02,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-21 22:35:02,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-21 22:35:02,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-21 22:35:02,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 99 transitions. [2020-10-21 22:35:02,235 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 99 transitions. Word has length 16 [2020-10-21 22:35:02,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:02,235 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 99 transitions. [2020-10-21 22:35:02,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-21 22:35:02,236 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 99 transitions. [2020-10-21 22:35:02,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-21 22:35:02,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:02,237 INFO L422 BasicCegarLoop]: trace histogram [8, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:02,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:35:02,450 INFO L429 AbstractCegarLoop]: === Iteration 11 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:02,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:02,450 INFO L82 PathProgramCache]: Analyzing trace with hash -715998856, now seen corresponding path program 5 times [2020-10-21 22:35:02,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:02,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778389851] [2020-10-21 22:35:02,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:02,544 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:02,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778389851] [2020-10-21 22:35:02,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915791640] [2020-10-21 22:35:02,545 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 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 [2020-10-21 22:35:02,624 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-10-21 22:35:02,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:35:02,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-21 22:35:02,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:02,640 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:02,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:02,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-10-21 22:35:02,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403205901] [2020-10-21 22:35:02,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-21 22:35:02,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:02,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-21 22:35:02,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-21 22:35:02,642 INFO L87 Difference]: Start difference. First operand 53 states and 99 transitions. Second operand 11 states. [2020-10-21 22:35:02,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:02,666 INFO L93 Difference]: Finished difference Result 54 states and 100 transitions. [2020-10-21 22:35:02,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-21 22:35:02,667 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 17 [2020-10-21 22:35:02,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:02,668 INFO L225 Difference]: With dead ends: 54 [2020-10-21 22:35:02,668 INFO L226 Difference]: Without dead ends: 54 [2020-10-21 22:35:02,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-10-21 22:35:02,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-21 22:35:02,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-21 22:35:02,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-21 22:35:02,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 100 transitions. [2020-10-21 22:35:02,672 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 100 transitions. Word has length 17 [2020-10-21 22:35:02,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:02,673 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 100 transitions. [2020-10-21 22:35:02,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-21 22:35:02,673 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 100 transitions. [2020-10-21 22:35:02,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-21 22:35:02,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:02,674 INFO L422 BasicCegarLoop]: trace histogram [9, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:02,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:35:02,885 INFO L429 AbstractCegarLoop]: === Iteration 12 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:02,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:02,887 INFO L82 PathProgramCache]: Analyzing trace with hash 181421392, now seen corresponding path program 6 times [2020-10-21 22:35:02,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:02,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771762581] [2020-10-21 22:35:02,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:02,989 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:02,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771762581] [2020-10-21 22:35:02,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460640125] [2020-10-21 22:35:02,990 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 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 [2020-10-21 22:35:03,117 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-10-21 22:35:03,117 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:35:03,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-21 22:35:03,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:03,137 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:03,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:03,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-10-21 22:35:03,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352856395] [2020-10-21 22:35:03,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-21 22:35:03,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:03,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-21 22:35:03,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-21 22:35:03,139 INFO L87 Difference]: Start difference. First operand 54 states and 100 transitions. Second operand 12 states. [2020-10-21 22:35:03,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:03,172 INFO L93 Difference]: Finished difference Result 55 states and 101 transitions. [2020-10-21 22:35:03,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-21 22:35:03,173 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-10-21 22:35:03,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:03,173 INFO L225 Difference]: With dead ends: 55 [2020-10-21 22:35:03,173 INFO L226 Difference]: Without dead ends: 55 [2020-10-21 22:35:03,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-10-21 22:35:03,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-21 22:35:03,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-21 22:35:03,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-21 22:35:03,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 101 transitions. [2020-10-21 22:35:03,178 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 101 transitions. Word has length 18 [2020-10-21 22:35:03,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:03,178 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 101 transitions. [2020-10-21 22:35:03,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-21 22:35:03,178 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 101 transitions. [2020-10-21 22:35:03,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:35:03,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:03,179 INFO L422 BasicCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:03,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-21 22:35:03,390 INFO L429 AbstractCegarLoop]: === Iteration 13 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:03,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:03,390 INFO L82 PathProgramCache]: Analyzing trace with hash -2063321992, now seen corresponding path program 7 times [2020-10-21 22:35:03,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:03,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472847712] [2020-10-21 22:35:03,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:03,534 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:03,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472847712] [2020-10-21 22:35:03,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273113643] [2020-10-21 22:35:03,536 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 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 [2020-10-21 22:35:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:03,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-21 22:35:03,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:03,613 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:03,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:03,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-10-21 22:35:03,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392303312] [2020-10-21 22:35:03,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-21 22:35:03,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:03,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-21 22:35:03,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-21 22:35:03,618 INFO L87 Difference]: Start difference. First operand 55 states and 101 transitions. Second operand 13 states. [2020-10-21 22:35:03,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:03,644 INFO L93 Difference]: Finished difference Result 56 states and 102 transitions. [2020-10-21 22:35:03,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-21 22:35:03,645 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 19 [2020-10-21 22:35:03,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:03,645 INFO L225 Difference]: With dead ends: 56 [2020-10-21 22:35:03,646 INFO L226 Difference]: Without dead ends: 56 [2020-10-21 22:35:03,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-10-21 22:35:03,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-21 22:35:03,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-21 22:35:03,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-21 22:35:03,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 102 transitions. [2020-10-21 22:35:03,650 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 102 transitions. Word has length 19 [2020-10-21 22:35:03,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:03,650 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 102 transitions. [2020-10-21 22:35:03,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-21 22:35:03,650 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 102 transitions. [2020-10-21 22:35:03,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-21 22:35:03,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:03,651 INFO L422 BasicCegarLoop]: trace histogram [11, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:03,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-21 22:35:03,863 INFO L429 AbstractCegarLoop]: === Iteration 14 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:03,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:03,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1364077136, now seen corresponding path program 8 times [2020-10-21 22:35:03,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:03,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341774763] [2020-10-21 22:35:03,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:03,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:03,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341774763] [2020-10-21 22:35:03,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724074361] [2020-10-21 22:35:03,995 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 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 [2020-10-21 22:35:04,058 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:35:04,058 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:35:04,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-21 22:35:04,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:04,078 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:04,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:04,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-10-21 22:35:04,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108303104] [2020-10-21 22:35:04,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-21 22:35:04,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:04,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-21 22:35:04,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-21 22:35:04,080 INFO L87 Difference]: Start difference. First operand 56 states and 102 transitions. Second operand 14 states. [2020-10-21 22:35:04,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:04,114 INFO L93 Difference]: Finished difference Result 57 states and 103 transitions. [2020-10-21 22:35:04,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-21 22:35:04,115 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 20 [2020-10-21 22:35:04,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:04,116 INFO L225 Difference]: With dead ends: 57 [2020-10-21 22:35:04,116 INFO L226 Difference]: Without dead ends: 57 [2020-10-21 22:35:04,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-10-21 22:35:04,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-21 22:35:04,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-21 22:35:04,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-21 22:35:04,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 103 transitions. [2020-10-21 22:35:04,121 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 103 transitions. Word has length 20 [2020-10-21 22:35:04,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:04,122 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 103 transitions. [2020-10-21 22:35:04,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-21 22:35:04,122 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 103 transitions. [2020-10-21 22:35:04,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-21 22:35:04,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:04,123 INFO L422 BasicCegarLoop]: trace histogram [12, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:04,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-21 22:35:04,336 INFO L429 AbstractCegarLoop]: === Iteration 15 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:04,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:04,336 INFO L82 PathProgramCache]: Analyzing trace with hash 239267704, now seen corresponding path program 9 times [2020-10-21 22:35:04,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:04,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515140898] [2020-10-21 22:35:04,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:04,490 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:04,490 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515140898] [2020-10-21 22:35:04,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489046723] [2020-10-21 22:35:04,491 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 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 [2020-10-21 22:35:04,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-10-21 22:35:04,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:35:04,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-21 22:35:04,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:04,687 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:04,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:04,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-10-21 22:35:04,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915919557] [2020-10-21 22:35:04,689 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 22:35:04,689 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:04,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 22:35:04,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-21 22:35:04,689 INFO L87 Difference]: Start difference. First operand 57 states and 103 transitions. Second operand 15 states. [2020-10-21 22:35:04,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:04,719 INFO L93 Difference]: Finished difference Result 58 states and 104 transitions. [2020-10-21 22:35:04,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-21 22:35:04,720 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 21 [2020-10-21 22:35:04,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:04,721 INFO L225 Difference]: With dead ends: 58 [2020-10-21 22:35:04,721 INFO L226 Difference]: Without dead ends: 58 [2020-10-21 22:35:04,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-10-21 22:35:04,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-21 22:35:04,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-10-21 22:35:04,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-21 22:35:04,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 104 transitions. [2020-10-21 22:35:04,724 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 104 transitions. Word has length 21 [2020-10-21 22:35:04,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:04,725 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 104 transitions. [2020-10-21 22:35:04,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 22:35:04,725 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 104 transitions. [2020-10-21 22:35:04,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-21 22:35:04,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:04,726 INFO L422 BasicCegarLoop]: trace histogram [13, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:04,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:35:04,935 INFO L429 AbstractCegarLoop]: === Iteration 16 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:04,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:04,936 INFO L82 PathProgramCache]: Analyzing trace with hash -270086320, now seen corresponding path program 10 times [2020-10-21 22:35:04,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:04,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097517953] [2020-10-21 22:35:04,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:05,098 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:05,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097517953] [2020-10-21 22:35:05,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274182640] [2020-10-21 22:35:05,099 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 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 [2020-10-21 22:35:05,168 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 22:35:05,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:35:05,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-21 22:35:05,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:05,251 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:05,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:05,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-10-21 22:35:05,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285145384] [2020-10-21 22:35:05,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-21 22:35:05,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:05,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-21 22:35:05,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-21 22:35:05,253 INFO L87 Difference]: Start difference. First operand 58 states and 104 transitions. Second operand 16 states. [2020-10-21 22:35:05,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:05,292 INFO L93 Difference]: Finished difference Result 59 states and 105 transitions. [2020-10-21 22:35:05,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-21 22:35:05,293 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 22 [2020-10-21 22:35:05,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:05,294 INFO L225 Difference]: With dead ends: 59 [2020-10-21 22:35:05,294 INFO L226 Difference]: Without dead ends: 59 [2020-10-21 22:35:05,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-10-21 22:35:05,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-21 22:35:05,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-21 22:35:05,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-21 22:35:05,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 105 transitions. [2020-10-21 22:35:05,297 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 105 transitions. Word has length 22 [2020-10-21 22:35:05,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:05,298 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 105 transitions. [2020-10-21 22:35:05,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-21 22:35:05,298 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 105 transitions. [2020-10-21 22:35:05,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-21 22:35:05,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:05,299 INFO L422 BasicCegarLoop]: trace histogram [14, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:05,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-21 22:35:05,508 INFO L429 AbstractCegarLoop]: === Iteration 17 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:05,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:05,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1119808120, now seen corresponding path program 11 times [2020-10-21 22:35:05,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:05,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895216577] [2020-10-21 22:35:05,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:05,688 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:05,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895216577] [2020-10-21 22:35:05,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878438959] [2020-10-21 22:35:05,688 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 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 [2020-10-21 22:35:05,836 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2020-10-21 22:35:05,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:35:05,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 16 conjunts are in the unsatisfiable core [2020-10-21 22:35:05,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:05,856 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:05,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:05,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2020-10-21 22:35:05,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172403355] [2020-10-21 22:35:05,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-21 22:35:05,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:05,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-21 22:35:05,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-21 22:35:05,858 INFO L87 Difference]: Start difference. First operand 59 states and 105 transitions. Second operand 17 states. [2020-10-21 22:35:05,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:05,889 INFO L93 Difference]: Finished difference Result 60 states and 106 transitions. [2020-10-21 22:35:05,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-21 22:35:05,890 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 23 [2020-10-21 22:35:05,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:05,890 INFO L225 Difference]: With dead ends: 60 [2020-10-21 22:35:05,891 INFO L226 Difference]: Without dead ends: 60 [2020-10-21 22:35:05,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-10-21 22:35:05,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-21 22:35:05,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-21 22:35:05,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-21 22:35:05,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 106 transitions. [2020-10-21 22:35:05,894 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 106 transitions. Word has length 23 [2020-10-21 22:35:05,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:05,894 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 106 transitions. [2020-10-21 22:35:05,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-21 22:35:05,895 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 106 transitions. [2020-10-21 22:35:05,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-21 22:35:05,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:05,895 INFO L422 BasicCegarLoop]: trace histogram [15, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:06,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-21 22:35:06,106 INFO L429 AbstractCegarLoop]: === Iteration 18 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:06,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:06,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1256862800, now seen corresponding path program 12 times [2020-10-21 22:35:06,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:06,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965903678] [2020-10-21 22:35:06,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:06,296 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:06,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965903678] [2020-10-21 22:35:06,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388699240] [2020-10-21 22:35:06,297 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 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 [2020-10-21 22:35:06,500 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-10-21 22:35:06,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:35:06,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-21 22:35:06,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:06,521 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:06,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:06,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-10-21 22:35:06,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297055331] [2020-10-21 22:35:06,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-21 22:35:06,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:06,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-21 22:35:06,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-21 22:35:06,523 INFO L87 Difference]: Start difference. First operand 60 states and 106 transitions. Second operand 18 states. [2020-10-21 22:35:06,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:06,553 INFO L93 Difference]: Finished difference Result 61 states and 107 transitions. [2020-10-21 22:35:06,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-21 22:35:06,553 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 24 [2020-10-21 22:35:06,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:06,554 INFO L225 Difference]: With dead ends: 61 [2020-10-21 22:35:06,554 INFO L226 Difference]: Without dead ends: 61 [2020-10-21 22:35:06,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-10-21 22:35:06,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-21 22:35:06,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-21 22:35:06,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-21 22:35:06,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 107 transitions. [2020-10-21 22:35:06,557 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 107 transitions. Word has length 24 [2020-10-21 22:35:06,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:06,558 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 107 transitions. [2020-10-21 22:35:06,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-21 22:35:06,558 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 107 transitions. [2020-10-21 22:35:06,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-21 22:35:06,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:06,561 INFO L422 BasicCegarLoop]: trace histogram [16, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:06,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-21 22:35:06,772 INFO L429 AbstractCegarLoop]: === Iteration 19 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:06,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:06,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1210590584, now seen corresponding path program 13 times [2020-10-21 22:35:06,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:06,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135712132] [2020-10-21 22:35:06,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:06,982 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:06,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135712132] [2020-10-21 22:35:06,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281700949] [2020-10-21 22:35:06,983 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 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 [2020-10-21 22:35:07,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:07,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 18 conjunts are in the unsatisfiable core [2020-10-21 22:35:07,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:07,057 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:07,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:07,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-10-21 22:35:07,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320832059] [2020-10-21 22:35:07,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-21 22:35:07,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:07,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-21 22:35:07,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-21 22:35:07,059 INFO L87 Difference]: Start difference. First operand 61 states and 107 transitions. Second operand 19 states. [2020-10-21 22:35:07,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:07,096 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-10-21 22:35:07,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-21 22:35:07,097 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 25 [2020-10-21 22:35:07,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:07,097 INFO L225 Difference]: With dead ends: 62 [2020-10-21 22:35:07,098 INFO L226 Difference]: Without dead ends: 62 [2020-10-21 22:35:07,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-10-21 22:35:07,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-21 22:35:07,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-21 22:35:07,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-21 22:35:07,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 108 transitions. [2020-10-21 22:35:07,101 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 108 transitions. Word has length 25 [2020-10-21 22:35:07,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:07,102 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 108 transitions. [2020-10-21 22:35:07,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-21 22:35:07,102 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 108 transitions. [2020-10-21 22:35:07,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-21 22:35:07,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:07,103 INFO L422 BasicCegarLoop]: trace histogram [17, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:07,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:35:07,304 INFO L429 AbstractCegarLoop]: === Iteration 20 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:07,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:07,304 INFO L82 PathProgramCache]: Analyzing trace with hash -223848112, now seen corresponding path program 14 times [2020-10-21 22:35:07,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:07,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051689790] [2020-10-21 22:35:07,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:07,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:07,561 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:07,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051689790] [2020-10-21 22:35:07,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471248407] [2020-10-21 22:35:07,563 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 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 [2020-10-21 22:35:07,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:35:07,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:35:07,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 19 conjunts are in the unsatisfiable core [2020-10-21 22:35:07,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:07,662 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:07,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:07,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-10-21 22:35:07,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35322568] [2020-10-21 22:35:07,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-21 22:35:07,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:07,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-21 22:35:07,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-21 22:35:07,664 INFO L87 Difference]: Start difference. First operand 62 states and 108 transitions. Second operand 20 states. [2020-10-21 22:35:07,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:07,705 INFO L93 Difference]: Finished difference Result 63 states and 109 transitions. [2020-10-21 22:35:07,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-21 22:35:07,706 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 26 [2020-10-21 22:35:07,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:07,706 INFO L225 Difference]: With dead ends: 63 [2020-10-21 22:35:07,706 INFO L226 Difference]: Without dead ends: 63 [2020-10-21 22:35:07,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-10-21 22:35:07,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-21 22:35:07,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-21 22:35:07,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-21 22:35:07,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 109 transitions. [2020-10-21 22:35:07,710 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 109 transitions. Word has length 26 [2020-10-21 22:35:07,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:07,710 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 109 transitions. [2020-10-21 22:35:07,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-21 22:35:07,711 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 109 transitions. [2020-10-21 22:35:07,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-21 22:35:07,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:07,711 INFO L422 BasicCegarLoop]: trace histogram [18, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:07,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:35:07,922 INFO L429 AbstractCegarLoop]: === Iteration 21 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:07,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:07,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1741774728, now seen corresponding path program 15 times [2020-10-21 22:35:07,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:07,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26850935] [2020-10-21 22:35:07,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:08,173 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:08,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26850935] [2020-10-21 22:35:08,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104552556] [2020-10-21 22:35:08,174 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 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 [2020-10-21 22:35:08,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-10-21 22:35:08,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:35:08,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 20 conjunts are in the unsatisfiable core [2020-10-21 22:35:08,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:08,923 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:08,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:08,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-10-21 22:35:08,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720054474] [2020-10-21 22:35:08,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-21 22:35:08,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:08,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-21 22:35:08,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-21 22:35:08,927 INFO L87 Difference]: Start difference. First operand 63 states and 109 transitions. Second operand 21 states. [2020-10-21 22:35:08,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:08,963 INFO L93 Difference]: Finished difference Result 64 states and 110 transitions. [2020-10-21 22:35:08,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-21 22:35:08,963 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 27 [2020-10-21 22:35:08,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:08,964 INFO L225 Difference]: With dead ends: 64 [2020-10-21 22:35:08,964 INFO L226 Difference]: Without dead ends: 64 [2020-10-21 22:35:08,965 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-10-21 22:35:08,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-21 22:35:08,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-10-21 22:35:08,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-21 22:35:08,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 110 transitions. [2020-10-21 22:35:08,967 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 110 transitions. Word has length 27 [2020-10-21 22:35:08,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:08,969 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 110 transitions. [2020-10-21 22:35:08,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-21 22:35:08,969 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 110 transitions. [2020-10-21 22:35:08,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-21 22:35:08,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:08,971 INFO L422 BasicCegarLoop]: trace histogram [19, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:09,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-10-21 22:35:09,172 INFO L429 AbstractCegarLoop]: === Iteration 22 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:09,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:09,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1552859568, now seen corresponding path program 16 times [2020-10-21 22:35:09,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:09,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690285876] [2020-10-21 22:35:09,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:09,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:09,445 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:09,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690285876] [2020-10-21 22:35:09,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656283649] [2020-10-21 22:35:09,446 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 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 [2020-10-21 22:35:09,521 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 22:35:09,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:35:09,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-21 22:35:09,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:09,544 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:09,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:09,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2020-10-21 22:35:09,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777261121] [2020-10-21 22:35:09,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-21 22:35:09,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:09,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-21 22:35:09,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-21 22:35:09,546 INFO L87 Difference]: Start difference. First operand 64 states and 110 transitions. Second operand 22 states. [2020-10-21 22:35:09,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:09,602 INFO L93 Difference]: Finished difference Result 65 states and 111 transitions. [2020-10-21 22:35:09,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-21 22:35:09,603 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 28 [2020-10-21 22:35:09,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:09,604 INFO L225 Difference]: With dead ends: 65 [2020-10-21 22:35:09,604 INFO L226 Difference]: Without dead ends: 65 [2020-10-21 22:35:09,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-10-21 22:35:09,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-21 22:35:09,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-21 22:35:09,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-21 22:35:09,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 111 transitions. [2020-10-21 22:35:09,612 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 111 transitions. Word has length 28 [2020-10-21 22:35:09,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:09,614 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 111 transitions. [2020-10-21 22:35:09,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-21 22:35:09,614 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 111 transitions. [2020-10-21 22:35:09,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-21 22:35:09,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:09,615 INFO L422 BasicCegarLoop]: trace histogram [20, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:09,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-21 22:35:09,826 INFO L429 AbstractCegarLoop]: === Iteration 23 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:09,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:09,826 INFO L82 PathProgramCache]: Analyzing trace with hash 8543096, now seen corresponding path program 17 times [2020-10-21 22:35:09,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:09,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501986477] [2020-10-21 22:35:09,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:10,119 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:10,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501986477] [2020-10-21 22:35:10,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [112407213] [2020-10-21 22:35:10,120 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 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 [2020-10-21 22:35:10,355 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-10-21 22:35:10,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:35:10,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 22 conjunts are in the unsatisfiable core [2020-10-21 22:35:10,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:10,387 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:10,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:10,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 22 [2020-10-21 22:35:10,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38016706] [2020-10-21 22:35:10,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-21 22:35:10,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:10,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-21 22:35:10,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-21 22:35:10,391 INFO L87 Difference]: Start difference. First operand 65 states and 111 transitions. Second operand 23 states. [2020-10-21 22:35:10,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:10,432 INFO L93 Difference]: Finished difference Result 66 states and 112 transitions. [2020-10-21 22:35:10,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-21 22:35:10,433 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 29 [2020-10-21 22:35:10,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:10,435 INFO L225 Difference]: With dead ends: 66 [2020-10-21 22:35:10,435 INFO L226 Difference]: Without dead ends: 66 [2020-10-21 22:35:10,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2020-10-21 22:35:10,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-21 22:35:10,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-21 22:35:10,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-21 22:35:10,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 112 transitions. [2020-10-21 22:35:10,438 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 112 transitions. Word has length 29 [2020-10-21 22:35:10,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:10,438 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 112 transitions. [2020-10-21 22:35:10,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-21 22:35:10,439 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 112 transitions. [2020-10-21 22:35:10,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-21 22:35:10,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:10,439 INFO L422 BasicCegarLoop]: trace histogram [21, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:10,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:35:10,651 INFO L429 AbstractCegarLoop]: === Iteration 24 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:10,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:10,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1167385424, now seen corresponding path program 18 times [2020-10-21 22:35:10,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:10,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942046478] [2020-10-21 22:35:10,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:11,043 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:11,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942046478] [2020-10-21 22:35:11,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467267923] [2020-10-21 22:35:11,044 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 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 [2020-10-21 22:35:13,588 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-10-21 22:35:13,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:35:13,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 23 conjunts are in the unsatisfiable core [2020-10-21 22:35:13,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:13,624 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:13,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:13,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 23 [2020-10-21 22:35:13,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640242670] [2020-10-21 22:35:13,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-21 22:35:13,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:13,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-21 22:35:13,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-10-21 22:35:13,626 INFO L87 Difference]: Start difference. First operand 66 states and 112 transitions. Second operand 24 states. [2020-10-21 22:35:13,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:13,676 INFO L93 Difference]: Finished difference Result 67 states and 113 transitions. [2020-10-21 22:35:13,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-21 22:35:13,677 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 30 [2020-10-21 22:35:13,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:13,678 INFO L225 Difference]: With dead ends: 67 [2020-10-21 22:35:13,678 INFO L226 Difference]: Without dead ends: 67 [2020-10-21 22:35:13,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2020-10-21 22:35:13,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-21 22:35:13,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-21 22:35:13,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-21 22:35:13,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 113 transitions. [2020-10-21 22:35:13,681 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 113 transitions. Word has length 30 [2020-10-21 22:35:13,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:13,681 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 113 transitions. [2020-10-21 22:35:13,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-21 22:35:13,681 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 113 transitions. [2020-10-21 22:35:13,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-21 22:35:13,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:13,682 INFO L422 BasicCegarLoop]: trace histogram [22, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:13,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-21 22:35:13,883 INFO L429 AbstractCegarLoop]: === Iteration 25 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:13,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:13,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1563208072, now seen corresponding path program 19 times [2020-10-21 22:35:13,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:13,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461262087] [2020-10-21 22:35:13,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:14,241 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:14,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461262087] [2020-10-21 22:35:14,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242119678] [2020-10-21 22:35:14,242 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 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 [2020-10-21 22:35:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:14,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-21 22:35:14,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:14,320 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:14,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:14,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 24 [2020-10-21 22:35:14,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988315309] [2020-10-21 22:35:14,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-21 22:35:14,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:14,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-21 22:35:14,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2020-10-21 22:35:14,322 INFO L87 Difference]: Start difference. First operand 67 states and 113 transitions. Second operand 25 states. [2020-10-21 22:35:14,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:14,364 INFO L93 Difference]: Finished difference Result 68 states and 114 transitions. [2020-10-21 22:35:14,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-21 22:35:14,365 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 31 [2020-10-21 22:35:14,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:14,365 INFO L225 Difference]: With dead ends: 68 [2020-10-21 22:35:14,365 INFO L226 Difference]: Without dead ends: 68 [2020-10-21 22:35:14,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2020-10-21 22:35:14,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-21 22:35:14,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-21 22:35:14,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-21 22:35:14,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 114 transitions. [2020-10-21 22:35:14,369 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 114 transitions. Word has length 31 [2020-10-21 22:35:14,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:14,370 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 114 transitions. [2020-10-21 22:35:14,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-21 22:35:14,370 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 114 transitions. [2020-10-21 22:35:14,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-21 22:35:14,370 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:14,370 INFO L422 BasicCegarLoop]: trace histogram [23, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:14,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:35:14,580 INFO L429 AbstractCegarLoop]: === Iteration 26 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:14,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:14,580 INFO L82 PathProgramCache]: Analyzing trace with hash -312260528, now seen corresponding path program 20 times [2020-10-21 22:35:14,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:14,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598225176] [2020-10-21 22:35:14,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:14,963 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:14,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598225176] [2020-10-21 22:35:14,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569749462] [2020-10-21 22:35:14,964 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 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 [2020-10-21 22:35:15,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:35:15,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:35:15,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 25 conjunts are in the unsatisfiable core [2020-10-21 22:35:15,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:15,046 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:15,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:15,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 25 [2020-10-21 22:35:15,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73395089] [2020-10-21 22:35:15,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-21 22:35:15,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:15,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-21 22:35:15,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-10-21 22:35:15,048 INFO L87 Difference]: Start difference. First operand 68 states and 114 transitions. Second operand 26 states. [2020-10-21 22:35:15,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:15,094 INFO L93 Difference]: Finished difference Result 69 states and 115 transitions. [2020-10-21 22:35:15,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-21 22:35:15,095 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 32 [2020-10-21 22:35:15,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:15,096 INFO L225 Difference]: With dead ends: 69 [2020-10-21 22:35:15,096 INFO L226 Difference]: Without dead ends: 69 [2020-10-21 22:35:15,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2020-10-21 22:35:15,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-21 22:35:15,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-21 22:35:15,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-21 22:35:15,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 115 transitions. [2020-10-21 22:35:15,100 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 115 transitions. Word has length 32 [2020-10-21 22:35:15,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:15,100 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 115 transitions. [2020-10-21 22:35:15,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-21 22:35:15,100 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 115 transitions. [2020-10-21 22:35:15,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-21 22:35:15,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:15,101 INFO L422 BasicCegarLoop]: trace histogram [24, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:15,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-21 22:35:15,301 INFO L429 AbstractCegarLoop]: === Iteration 27 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:15,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:15,302 INFO L82 PathProgramCache]: Analyzing trace with hash -187592328, now seen corresponding path program 21 times [2020-10-21 22:35:15,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:15,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881728417] [2020-10-21 22:35:15,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:15,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:15,734 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:15,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881728417] [2020-10-21 22:35:15,735 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377998375] [2020-10-21 22:35:15,735 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 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 [2020-10-21 22:35:16,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2020-10-21 22:35:16,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:35:16,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 26 conjunts are in the unsatisfiable core [2020-10-21 22:35:16,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:16,457 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:16,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:16,457 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 26 [2020-10-21 22:35:16,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751136465] [2020-10-21 22:35:16,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-21 22:35:16,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:16,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-21 22:35:16,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-10-21 22:35:16,459 INFO L87 Difference]: Start difference. First operand 69 states and 115 transitions. Second operand 27 states. [2020-10-21 22:35:16,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:16,501 INFO L93 Difference]: Finished difference Result 70 states and 116 transitions. [2020-10-21 22:35:16,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-21 22:35:16,501 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 33 [2020-10-21 22:35:16,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:16,502 INFO L225 Difference]: With dead ends: 70 [2020-10-21 22:35:16,502 INFO L226 Difference]: Without dead ends: 70 [2020-10-21 22:35:16,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2020-10-21 22:35:16,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-21 22:35:16,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-10-21 22:35:16,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-21 22:35:16,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 116 transitions. [2020-10-21 22:35:16,506 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 116 transitions. Word has length 33 [2020-10-21 22:35:16,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:16,506 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 116 transitions. [2020-10-21 22:35:16,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-21 22:35:16,506 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 116 transitions. [2020-10-21 22:35:16,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-21 22:35:16,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:16,507 INFO L422 BasicCegarLoop]: trace histogram [25, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:16,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-10-21 22:35:16,717 INFO L429 AbstractCegarLoop]: === Iteration 28 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:16,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:16,717 INFO L82 PathProgramCache]: Analyzing trace with hash -617845424, now seen corresponding path program 22 times [2020-10-21 22:35:16,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:16,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835800575] [2020-10-21 22:35:16,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:17,241 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:17,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835800575] [2020-10-21 22:35:17,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441265815] [2020-10-21 22:35:17,242 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 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 [2020-10-21 22:35:17,336 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 22:35:17,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:35:17,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 27 conjunts are in the unsatisfiable core [2020-10-21 22:35:17,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:17,367 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:17,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:17,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 27 [2020-10-21 22:35:17,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358421039] [2020-10-21 22:35:17,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-21 22:35:17,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:17,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-21 22:35:17,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-10-21 22:35:17,370 INFO L87 Difference]: Start difference. First operand 70 states and 116 transitions. Second operand 28 states. [2020-10-21 22:35:17,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:17,427 INFO L93 Difference]: Finished difference Result 71 states and 117 transitions. [2020-10-21 22:35:17,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-21 22:35:17,427 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 34 [2020-10-21 22:35:17,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:17,428 INFO L225 Difference]: With dead ends: 71 [2020-10-21 22:35:17,428 INFO L226 Difference]: Without dead ends: 71 [2020-10-21 22:35:17,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=378, Invalid=378, Unknown=0, NotChecked=0, Total=756 [2020-10-21 22:35:17,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-21 22:35:17,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-10-21 22:35:17,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-21 22:35:17,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 117 transitions. [2020-10-21 22:35:17,432 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 117 transitions. Word has length 34 [2020-10-21 22:35:17,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:17,433 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 117 transitions. [2020-10-21 22:35:17,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-21 22:35:17,433 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 117 transitions. [2020-10-21 22:35:17,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-21 22:35:17,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:17,434 INFO L422 BasicCegarLoop]: trace histogram [26, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:17,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-10-21 22:35:17,644 INFO L429 AbstractCegarLoop]: === Iteration 29 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:17,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:17,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1070789512, now seen corresponding path program 23 times [2020-10-21 22:35:17,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:17,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379310064] [2020-10-21 22:35:17,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:17,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:18,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379310064] [2020-10-21 22:35:18,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574823955] [2020-10-21 22:35:18,168 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 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 [2020-10-21 22:35:18,605 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2020-10-21 22:35:18,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:35:18,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 28 conjunts are in the unsatisfiable core [2020-10-21 22:35:18,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:18,640 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:18,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:18,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 28 [2020-10-21 22:35:18,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574346098] [2020-10-21 22:35:18,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-21 22:35:18,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:18,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-21 22:35:18,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-10-21 22:35:18,643 INFO L87 Difference]: Start difference. First operand 71 states and 117 transitions. Second operand 29 states. [2020-10-21 22:35:18,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:18,686 INFO L93 Difference]: Finished difference Result 72 states and 118 transitions. [2020-10-21 22:35:18,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-21 22:35:18,687 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 35 [2020-10-21 22:35:18,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:18,688 INFO L225 Difference]: With dead ends: 72 [2020-10-21 22:35:18,688 INFO L226 Difference]: Without dead ends: 72 [2020-10-21 22:35:18,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2020-10-21 22:35:18,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-21 22:35:18,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-21 22:35:18,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-21 22:35:18,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 118 transitions. [2020-10-21 22:35:18,693 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 118 transitions. Word has length 35 [2020-10-21 22:35:18,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:18,693 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 118 transitions. [2020-10-21 22:35:18,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-21 22:35:18,693 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 118 transitions. [2020-10-21 22:35:18,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-21 22:35:18,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:18,694 INFO L422 BasicCegarLoop]: trace histogram [27, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:18,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-10-21 22:35:18,902 INFO L429 AbstractCegarLoop]: === Iteration 30 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:18,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:18,903 INFO L82 PathProgramCache]: Analyzing trace with hash 2067812944, now seen corresponding path program 24 times [2020-10-21 22:35:18,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:18,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051075559] [2020-10-21 22:35:18,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:19,390 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:19,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051075559] [2020-10-21 22:35:19,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064855936] [2020-10-21 22:35:19,391 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 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 [2020-10-21 22:35:35,921 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2020-10-21 22:35:35,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:35:36,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-21 22:35:36,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:36,101 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:36,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:36,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 29 [2020-10-21 22:35:36,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127185769] [2020-10-21 22:35:36,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-21 22:35:36,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:36,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-21 22:35:36,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-10-21 22:35:36,103 INFO L87 Difference]: Start difference. First operand 72 states and 118 transitions. Second operand 30 states. [2020-10-21 22:35:36,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:36,141 INFO L93 Difference]: Finished difference Result 73 states and 119 transitions. [2020-10-21 22:35:36,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-21 22:35:36,141 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 36 [2020-10-21 22:35:36,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:36,142 INFO L225 Difference]: With dead ends: 73 [2020-10-21 22:35:36,142 INFO L226 Difference]: Without dead ends: 73 [2020-10-21 22:35:36,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=435, Invalid=435, Unknown=0, NotChecked=0, Total=870 [2020-10-21 22:35:36,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-21 22:35:36,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-10-21 22:35:36,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-21 22:35:36,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 119 transitions. [2020-10-21 22:35:36,146 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 119 transitions. Word has length 36 [2020-10-21 22:35:36,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:36,146 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 119 transitions. [2020-10-21 22:35:36,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-21 22:35:36,147 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 119 transitions. [2020-10-21 22:35:36,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-21 22:35:36,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:36,147 INFO L422 BasicCegarLoop]: trace histogram [28, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:36,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:35:36,356 INFO L429 AbstractCegarLoop]: === Iteration 31 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:36,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:36,356 INFO L82 PathProgramCache]: Analyzing trace with hash 580241272, now seen corresponding path program 25 times [2020-10-21 22:35:36,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:36,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224831406] [2020-10-21 22:35:36,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:36,871 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:36,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224831406] [2020-10-21 22:35:36,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1311965392] [2020-10-21 22:35:36,872 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 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 [2020-10-21 22:35:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:36,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 30 conjunts are in the unsatisfiable core [2020-10-21 22:35:36,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:36,963 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:36,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:36,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 30 [2020-10-21 22:35:36,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948014159] [2020-10-21 22:35:36,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-21 22:35:36,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:36,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-21 22:35:36,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-10-21 22:35:36,965 INFO L87 Difference]: Start difference. First operand 73 states and 119 transitions. Second operand 31 states. [2020-10-21 22:35:37,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:37,011 INFO L93 Difference]: Finished difference Result 74 states and 120 transitions. [2020-10-21 22:35:37,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-21 22:35:37,012 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 37 [2020-10-21 22:35:37,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:37,013 INFO L225 Difference]: With dead ends: 74 [2020-10-21 22:35:37,013 INFO L226 Difference]: Without dead ends: 74 [2020-10-21 22:35:37,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2020-10-21 22:35:37,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-21 22:35:37,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-21 22:35:37,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-21 22:35:37,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 120 transitions. [2020-10-21 22:35:37,016 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 120 transitions. Word has length 37 [2020-10-21 22:35:37,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:37,016 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 120 transitions. [2020-10-21 22:35:37,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-21 22:35:37,016 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 120 transitions. [2020-10-21 22:35:37,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-21 22:35:37,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:37,017 INFO L422 BasicCegarLoop]: trace histogram [29, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:37,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:35:37,228 INFO L429 AbstractCegarLoop]: === Iteration 32 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:37,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:37,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1710159696, now seen corresponding path program 26 times [2020-10-21 22:35:37,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:37,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899571301] [2020-10-21 22:35:37,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:37,751 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:37,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899571301] [2020-10-21 22:35:37,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716585235] [2020-10-21 22:35:37,751 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 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 [2020-10-21 22:35:37,815 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:35:37,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:35:37,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 31 conjunts are in the unsatisfiable core [2020-10-21 22:35:37,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:37,845 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:37,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:37,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 31 [2020-10-21 22:35:37,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536701974] [2020-10-21 22:35:37,846 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-21 22:35:37,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:37,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-21 22:35:37,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:35:37,848 INFO L87 Difference]: Start difference. First operand 74 states and 120 transitions. Second operand 32 states. [2020-10-21 22:35:37,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:37,892 INFO L93 Difference]: Finished difference Result 75 states and 121 transitions. [2020-10-21 22:35:37,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-21 22:35:37,893 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 38 [2020-10-21 22:35:37,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:37,894 INFO L225 Difference]: With dead ends: 75 [2020-10-21 22:35:37,894 INFO L226 Difference]: Without dead ends: 75 [2020-10-21 22:35:37,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2020-10-21 22:35:37,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-21 22:35:37,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-21 22:35:37,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-21 22:35:37,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 121 transitions. [2020-10-21 22:35:37,899 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 121 transitions. Word has length 38 [2020-10-21 22:35:37,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:37,900 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 121 transitions. [2020-10-21 22:35:37,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-21 22:35:37,900 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 121 transitions. [2020-10-21 22:35:37,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-21 22:35:37,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:37,901 INFO L422 BasicCegarLoop]: trace histogram [30, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:38,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:35:38,110 INFO L429 AbstractCegarLoop]: === Iteration 33 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:38,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:38,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1917074824, now seen corresponding path program 27 times [2020-10-21 22:35:38,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:38,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664128658] [2020-10-21 22:35:38,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:38,702 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:38,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664128658] [2020-10-21 22:35:38,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592529164] [2020-10-21 22:35:38,703 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 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 [2020-10-21 22:35:43,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-10-21 22:35:43,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:35:43,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 32 conjunts are in the unsatisfiable core [2020-10-21 22:35:43,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:43,636 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:43,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:43,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 32 [2020-10-21 22:35:43,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209069986] [2020-10-21 22:35:43,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-21 22:35:43,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:43,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-21 22:35:43,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-10-21 22:35:43,638 INFO L87 Difference]: Start difference. First operand 75 states and 121 transitions. Second operand 33 states. [2020-10-21 22:35:43,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:43,693 INFO L93 Difference]: Finished difference Result 76 states and 122 transitions. [2020-10-21 22:35:43,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-21 22:35:43,693 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 39 [2020-10-21 22:35:43,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:43,694 INFO L225 Difference]: With dead ends: 76 [2020-10-21 22:35:43,694 INFO L226 Difference]: Without dead ends: 76 [2020-10-21 22:35:43,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2020-10-21 22:35:43,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-21 22:35:43,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-21 22:35:43,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-21 22:35:43,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 122 transitions. [2020-10-21 22:35:43,698 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 122 transitions. Word has length 39 [2020-10-21 22:35:43,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:43,698 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 122 transitions. [2020-10-21 22:35:43,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-21 22:35:43,698 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 122 transitions. [2020-10-21 22:35:43,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-21 22:35:43,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:43,699 INFO L422 BasicCegarLoop]: trace histogram [31, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:43,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-10-21 22:35:43,909 INFO L429 AbstractCegarLoop]: === Iteration 34 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:43,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:43,910 INFO L82 PathProgramCache]: Analyzing trace with hash 1602772048, now seen corresponding path program 28 times [2020-10-21 22:35:43,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:43,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302676596] [2020-10-21 22:35:43,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:43,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:44,519 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:44,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302676596] [2020-10-21 22:35:44,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146032117] [2020-10-21 22:35:44,520 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 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 [2020-10-21 22:35:44,591 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 22:35:44,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:35:44,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 33 conjunts are in the unsatisfiable core [2020-10-21 22:35:44,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:44,615 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:44,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:44,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 33 [2020-10-21 22:35:44,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039933555] [2020-10-21 22:35:44,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-21 22:35:44,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:44,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-21 22:35:44,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 22:35:44,617 INFO L87 Difference]: Start difference. First operand 76 states and 122 transitions. Second operand 34 states. [2020-10-21 22:35:44,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:44,684 INFO L93 Difference]: Finished difference Result 77 states and 123 transitions. [2020-10-21 22:35:44,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-21 22:35:44,685 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 40 [2020-10-21 22:35:44,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:44,685 INFO L225 Difference]: With dead ends: 77 [2020-10-21 22:35:44,686 INFO L226 Difference]: Without dead ends: 77 [2020-10-21 22:35:44,686 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=561, Invalid=561, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 22:35:44,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-21 22:35:44,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-21 22:35:44,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-21 22:35:44,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 123 transitions. [2020-10-21 22:35:44,689 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 123 transitions. Word has length 40 [2020-10-21 22:35:44,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:44,689 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 123 transitions. [2020-10-21 22:35:44,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-21 22:35:44,690 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 123 transitions. [2020-10-21 22:35:44,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-21 22:35:44,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:44,690 INFO L422 BasicCegarLoop]: trace histogram [32, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:44,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:35:44,901 INFO L429 AbstractCegarLoop]: === Iteration 35 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:44,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:44,902 INFO L82 PathProgramCache]: Analyzing trace with hash -951124616, now seen corresponding path program 29 times [2020-10-21 22:35:44,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:44,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324438633] [2020-10-21 22:35:44,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:45,672 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:45,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324438633] [2020-10-21 22:35:45,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956384857] [2020-10-21 22:35:45,673 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 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 [2020-10-21 22:35:56,609 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2020-10-21 22:35:56,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:35:56,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 34 conjunts are in the unsatisfiable core [2020-10-21 22:35:56,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:35:56,710 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:56,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:35:56,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 34 [2020-10-21 22:35:56,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523581905] [2020-10-21 22:35:56,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-21 22:35:56,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:35:56,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-21 22:35:56,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-10-21 22:35:56,713 INFO L87 Difference]: Start difference. First operand 77 states and 123 transitions. Second operand 35 states. [2020-10-21 22:35:56,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:35:56,774 INFO L93 Difference]: Finished difference Result 78 states and 124 transitions. [2020-10-21 22:35:56,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-21 22:35:56,775 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 41 [2020-10-21 22:35:56,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:35:56,776 INFO L225 Difference]: With dead ends: 78 [2020-10-21 22:35:56,776 INFO L226 Difference]: Without dead ends: 78 [2020-10-21 22:35:56,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2020-10-21 22:35:56,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-21 22:35:56,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-10-21 22:35:56,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-21 22:35:56,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 124 transitions. [2020-10-21 22:35:56,779 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 124 transitions. Word has length 41 [2020-10-21 22:35:56,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:35:56,779 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 124 transitions. [2020-10-21 22:35:56,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-21 22:35:56,780 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 124 transitions. [2020-10-21 22:35:56,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-21 22:35:56,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:35:56,780 INFO L422 BasicCegarLoop]: trace histogram [33, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:35:56,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-10-21 22:35:56,981 INFO L429 AbstractCegarLoop]: === Iteration 36 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:35:56,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:35:56,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1482457424, now seen corresponding path program 30 times [2020-10-21 22:35:56,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:35:56,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001251351] [2020-10-21 22:35:56,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:35:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:35:57,695 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:35:57,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001251351] [2020-10-21 22:35:57,695 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635677764] [2020-10-21 22:35:57,695 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 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 [2020-10-21 22:36:36,034 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2020-10-21 22:36:36,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:36:36,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 35 conjunts are in the unsatisfiable core [2020-10-21 22:36:36,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:36:36,438 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:36:36,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:36:36,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 35 [2020-10-21 22:36:36,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137963812] [2020-10-21 22:36:36,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-21 22:36:36,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:36:36,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-21 22:36:36,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-10-21 22:36:36,440 INFO L87 Difference]: Start difference. First operand 78 states and 124 transitions. Second operand 36 states. [2020-10-21 22:36:36,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:36:36,488 INFO L93 Difference]: Finished difference Result 79 states and 125 transitions. [2020-10-21 22:36:36,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-21 22:36:36,489 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 42 [2020-10-21 22:36:36,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:36:36,489 INFO L225 Difference]: With dead ends: 79 [2020-10-21 22:36:36,489 INFO L226 Difference]: Without dead ends: 79 [2020-10-21 22:36:36,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=630, Invalid=630, Unknown=0, NotChecked=0, Total=1260 [2020-10-21 22:36:36,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-21 22:36:36,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-21 22:36:36,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-21 22:36:36,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 125 transitions. [2020-10-21 22:36:36,492 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 125 transitions. Word has length 42 [2020-10-21 22:36:36,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:36:36,493 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 125 transitions. [2020-10-21 22:36:36,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-21 22:36:36,493 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 125 transitions. [2020-10-21 22:36:36,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-21 22:36:36,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:36:36,494 INFO L422 BasicCegarLoop]: trace histogram [34, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:36:36,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:36:36,702 INFO L429 AbstractCegarLoop]: === Iteration 37 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:36:36,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:36:36,703 INFO L82 PathProgramCache]: Analyzing trace with hash -385910664, now seen corresponding path program 31 times [2020-10-21 22:36:36,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:36:36,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063829365] [2020-10-21 22:36:36,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:36:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:36:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:36:37,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063829365] [2020-10-21 22:36:37,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319769352] [2020-10-21 22:36:37,513 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 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:36:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:36:37,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 36 conjunts are in the unsatisfiable core [2020-10-21 22:36:37,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:36:37,644 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:36:37,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:36:37,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 36 [2020-10-21 22:36:37,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617047810] [2020-10-21 22:36:37,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-21 22:36:37,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:36:37,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-21 22:36:37,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2020-10-21 22:36:37,649 INFO L87 Difference]: Start difference. First operand 79 states and 125 transitions. Second operand 37 states. [2020-10-21 22:36:37,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:36:37,728 INFO L93 Difference]: Finished difference Result 80 states and 126 transitions. [2020-10-21 22:36:37,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-21 22:36:37,729 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 43 [2020-10-21 22:36:37,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:36:37,730 INFO L225 Difference]: With dead ends: 80 [2020-10-21 22:36:37,731 INFO L226 Difference]: Without dead ends: 80 [2020-10-21 22:36:37,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2020-10-21 22:36:37,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-21 22:36:37,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-21 22:36:37,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-21 22:36:37,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 126 transitions. [2020-10-21 22:36:37,736 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 126 transitions. Word has length 43 [2020-10-21 22:36:37,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:36:37,737 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 126 transitions. [2020-10-21 22:36:37,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-21 22:36:37,737 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 126 transitions. [2020-10-21 22:36:37,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-21 22:36:37,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:36:37,738 INFO L422 BasicCegarLoop]: trace histogram [35, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:36:37,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-10-21 22:36:37,952 INFO L429 AbstractCegarLoop]: === Iteration 38 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:36:37,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:36:37,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1824220752, now seen corresponding path program 32 times [2020-10-21 22:36:37,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:36:37,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147178744] [2020-10-21 22:36:37,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:36:37,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:36:38,806 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:36:38,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147178744] [2020-10-21 22:36:38,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220647857] [2020-10-21 22:36:38,807 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 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:36:38,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:36:38,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:36:38,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 37 conjunts are in the unsatisfiable core [2020-10-21 22:36:38,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:36:38,903 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:36:38,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:36:38,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 37 [2020-10-21 22:36:38,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131892333] [2020-10-21 22:36:38,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-21 22:36:38,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:36:38,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-21 22:36:38,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-10-21 22:36:38,906 INFO L87 Difference]: Start difference. First operand 80 states and 126 transitions. Second operand 38 states. [2020-10-21 22:36:38,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:36:38,970 INFO L93 Difference]: Finished difference Result 81 states and 127 transitions. [2020-10-21 22:36:38,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-21 22:36:38,971 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 44 [2020-10-21 22:36:38,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:36:38,972 INFO L225 Difference]: With dead ends: 81 [2020-10-21 22:36:38,972 INFO L226 Difference]: Without dead ends: 81 [2020-10-21 22:36:38,973 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=703, Invalid=703, Unknown=0, NotChecked=0, Total=1406 [2020-10-21 22:36:38,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-21 22:36:38,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-21 22:36:38,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-21 22:36:38,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 127 transitions. [2020-10-21 22:36:38,975 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 127 transitions. Word has length 44 [2020-10-21 22:36:38,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:36:38,976 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 127 transitions. [2020-10-21 22:36:38,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-21 22:36:38,976 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 127 transitions. [2020-10-21 22:36:38,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-21 22:36:38,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:36:38,976 INFO L422 BasicCegarLoop]: trace histogram [36, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:36:39,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-10-21 22:36:39,185 INFO L429 AbstractCegarLoop]: === Iteration 39 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:36:39,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:36:39,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1618817912, now seen corresponding path program 33 times [2020-10-21 22:36:39,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:36:39,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012852351] [2020-10-21 22:36:39,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:36:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:36:39,946 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:36:39,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012852351] [2020-10-21 22:36:39,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792732996] [2020-10-21 22:36:39,947 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 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:36:44,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2020-10-21 22:36:44,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:36:44,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 38 conjunts are in the unsatisfiable core [2020-10-21 22:36:44,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:36:44,832 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:36:44,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:36:44,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 38 [2020-10-21 22:36:44,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241163970] [2020-10-21 22:36:44,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-21 22:36:44,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:36:44,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-21 22:36:44,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 22:36:44,834 INFO L87 Difference]: Start difference. First operand 81 states and 127 transitions. Second operand 39 states. [2020-10-21 22:36:44,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:36:44,893 INFO L93 Difference]: Finished difference Result 82 states and 128 transitions. [2020-10-21 22:36:44,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-21 22:36:44,894 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 45 [2020-10-21 22:36:44,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:36:44,895 INFO L225 Difference]: With dead ends: 82 [2020-10-21 22:36:44,895 INFO L226 Difference]: Without dead ends: 82 [2020-10-21 22:36:44,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2020-10-21 22:36:44,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-21 22:36:44,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-10-21 22:36:44,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-21 22:36:44,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 128 transitions. [2020-10-21 22:36:44,900 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 128 transitions. Word has length 45 [2020-10-21 22:36:44,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:36:44,901 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 128 transitions. [2020-10-21 22:36:44,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-21 22:36:44,901 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 128 transitions. [2020-10-21 22:36:44,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-21 22:36:44,902 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:36:44,902 INFO L422 BasicCegarLoop]: trace histogram [37, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:36:45,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-10-21 22:36:45,102 INFO L429 AbstractCegarLoop]: === Iteration 40 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:36:45,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:36:45,103 INFO L82 PathProgramCache]: Analyzing trace with hash -453702832, now seen corresponding path program 34 times [2020-10-21 22:36:45,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:36:45,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874584370] [2020-10-21 22:36:45,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:36:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:36:46,025 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:36:46,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874584370] [2020-10-21 22:36:46,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182862061] [2020-10-21 22:36:46,026 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 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:36:46,097 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-21 22:36:46,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:36:46,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 39 conjunts are in the unsatisfiable core [2020-10-21 22:36:46,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:36:46,126 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:36:46,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:36:46,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 39 [2020-10-21 22:36:46,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183143822] [2020-10-21 22:36:46,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-21 22:36:46,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:36:46,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-21 22:36:46,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-10-21 22:36:46,128 INFO L87 Difference]: Start difference. First operand 82 states and 128 transitions. Second operand 40 states. [2020-10-21 22:36:46,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:36:46,199 INFO L93 Difference]: Finished difference Result 83 states and 129 transitions. [2020-10-21 22:36:46,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-21 22:36:46,199 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 46 [2020-10-21 22:36:46,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:36:46,200 INFO L225 Difference]: With dead ends: 83 [2020-10-21 22:36:46,200 INFO L226 Difference]: Without dead ends: 83 [2020-10-21 22:36:46,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=780, Invalid=780, Unknown=0, NotChecked=0, Total=1560 [2020-10-21 22:36:46,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-21 22:36:46,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-21 22:36:46,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-21 22:36:46,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 129 transitions. [2020-10-21 22:36:46,202 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 129 transitions. Word has length 46 [2020-10-21 22:36:46,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:36:46,203 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 129 transitions. [2020-10-21 22:36:46,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-21 22:36:46,203 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 129 transitions. [2020-10-21 22:36:46,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-21 22:36:46,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:36:46,203 INFO L422 BasicCegarLoop]: trace histogram [38, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:36:46,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-10-21 22:36:46,413 INFO L429 AbstractCegarLoop]: === Iteration 41 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:36:46,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:36:46,413 INFO L82 PathProgramCache]: Analyzing trace with hash -277336456, now seen corresponding path program 35 times [2020-10-21 22:36:46,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:36:46,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934352309] [2020-10-21 22:36:46,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:36:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:36:47,332 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:36:47,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934352309] [2020-10-21 22:36:47,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518805305] [2020-10-21 22:36:47,333 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 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:37:11,325 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2020-10-21 22:37:11,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:37:11,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 40 conjunts are in the unsatisfiable core [2020-10-21 22:37:11,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:37:11,710 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:37:11,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:37:11,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 40 [2020-10-21 22:37:11,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519119786] [2020-10-21 22:37:11,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-21 22:37:11,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:37:11,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-21 22:37:11,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2020-10-21 22:37:11,713 INFO L87 Difference]: Start difference. First operand 83 states and 129 transitions. Second operand 41 states. [2020-10-21 22:37:11,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:37:11,767 INFO L93 Difference]: Finished difference Result 84 states and 130 transitions. [2020-10-21 22:37:11,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-21 22:37:11,768 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 47 [2020-10-21 22:37:11,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:37:11,769 INFO L225 Difference]: With dead ends: 84 [2020-10-21 22:37:11,769 INFO L226 Difference]: Without dead ends: 84 [2020-10-21 22:37:11,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2020-10-21 22:37:11,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-21 22:37:11,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-21 22:37:11,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-21 22:37:11,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 130 transitions. [2020-10-21 22:37:11,773 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 130 transitions. Word has length 47 [2020-10-21 22:37:11,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:37:11,773 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 130 transitions. [2020-10-21 22:37:11,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-21 22:37:11,774 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 130 transitions. [2020-10-21 22:37:11,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-21 22:37:11,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:37:11,775 INFO L422 BasicCegarLoop]: trace histogram [39, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:37:11,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:37:11,975 INFO L429 AbstractCegarLoop]: === Iteration 42 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:37:11,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:37:11,976 INFO L82 PathProgramCache]: Analyzing trace with hash 895053904, now seen corresponding path program 36 times [2020-10-21 22:37:11,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:37:11,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249411776] [2020-10-21 22:37:11,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:37:11,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:37:12,923 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:37:12,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249411776] [2020-10-21 22:37:12,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682187762] [2020-10-21 22:37:12,924 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 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:38:25,508 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2020-10-21 22:38:25,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:38:27,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 41 conjunts are in the unsatisfiable core [2020-10-21 22:38:27,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:38:27,148 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:38:27,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:38:27,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 41 [2020-10-21 22:38:27,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439279834] [2020-10-21 22:38:27,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-21 22:38:27,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:38:27,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-21 22:38:27,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-10-21 22:38:27,151 INFO L87 Difference]: Start difference. First operand 84 states and 130 transitions. Second operand 42 states. [2020-10-21 22:38:27,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:38:27,215 INFO L93 Difference]: Finished difference Result 85 states and 131 transitions. [2020-10-21 22:38:27,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-21 22:38:27,219 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 48 [2020-10-21 22:38:27,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:38:27,220 INFO L225 Difference]: With dead ends: 85 [2020-10-21 22:38:27,220 INFO L226 Difference]: Without dead ends: 85 [2020-10-21 22:38:27,221 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=861, Invalid=861, Unknown=0, NotChecked=0, Total=1722 [2020-10-21 22:38:27,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-21 22:38:27,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-21 22:38:27,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-21 22:38:27,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 131 transitions. [2020-10-21 22:38:27,225 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 131 transitions. Word has length 48 [2020-10-21 22:38:27,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:38:27,226 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 131 transitions. [2020-10-21 22:38:27,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-21 22:38:27,226 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 131 transitions. [2020-10-21 22:38:27,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-21 22:38:27,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:38:27,227 INFO L422 BasicCegarLoop]: trace histogram [40, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:38:27,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-10-21 22:38:27,428 INFO L429 AbstractCegarLoop]: === Iteration 43 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:38:27,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:38:27,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1415550600, now seen corresponding path program 37 times [2020-10-21 22:38:27,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:38:27,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486173090] [2020-10-21 22:38:27,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:38:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:38:28,688 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:38:28,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486173090] [2020-10-21 22:38:28,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538953477] [2020-10-21 22:38:28,689 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 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:38:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:38:28,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 42 conjunts are in the unsatisfiable core [2020-10-21 22:38:28,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:38:28,786 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:38:28,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:38:28,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 42 [2020-10-21 22:38:28,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327154951] [2020-10-21 22:38:28,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-21 22:38:28,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:38:28,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-21 22:38:28,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-10-21 22:38:28,790 INFO L87 Difference]: Start difference. First operand 85 states and 131 transitions. Second operand 43 states. [2020-10-21 22:38:28,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:38:28,854 INFO L93 Difference]: Finished difference Result 86 states and 132 transitions. [2020-10-21 22:38:28,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-21 22:38:28,855 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 49 [2020-10-21 22:38:28,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:38:28,856 INFO L225 Difference]: With dead ends: 86 [2020-10-21 22:38:28,856 INFO L226 Difference]: Without dead ends: 86 [2020-10-21 22:38:28,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2020-10-21 22:38:28,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-21 22:38:28,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-10-21 22:38:28,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-21 22:38:28,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 132 transitions. [2020-10-21 22:38:28,861 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 132 transitions. Word has length 49 [2020-10-21 22:38:28,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:38:28,863 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 132 transitions. [2020-10-21 22:38:28,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-21 22:38:28,863 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 132 transitions. [2020-10-21 22:38:28,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-21 22:38:28,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:38:28,864 INFO L422 BasicCegarLoop]: trace histogram [41, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:38:29,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:38:29,076 INFO L429 AbstractCegarLoop]: === Iteration 44 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:38:29,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:38:29,077 INFO L82 PathProgramCache]: Analyzing trace with hash -29846192, now seen corresponding path program 38 times [2020-10-21 22:38:29,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:38:29,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268457456] [2020-10-21 22:38:29,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:38:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:38:30,141 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:38:30,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268457456] [2020-10-21 22:38:30,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395490762] [2020-10-21 22:38:30,141 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 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:38:30,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:38:30,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:38:30,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 43 conjunts are in the unsatisfiable core [2020-10-21 22:38:30,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:38:30,248 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:38:30,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:38:30,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 43 [2020-10-21 22:38:30,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103248489] [2020-10-21 22:38:30,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-21 22:38:30,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:38:30,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-21 22:38:30,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-10-21 22:38:30,250 INFO L87 Difference]: Start difference. First operand 86 states and 132 transitions. Second operand 44 states. [2020-10-21 22:38:30,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:38:30,314 INFO L93 Difference]: Finished difference Result 87 states and 133 transitions. [2020-10-21 22:38:30,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-21 22:38:30,315 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 50 [2020-10-21 22:38:30,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:38:30,316 INFO L225 Difference]: With dead ends: 87 [2020-10-21 22:38:30,316 INFO L226 Difference]: Without dead ends: 87 [2020-10-21 22:38:30,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=946, Invalid=946, Unknown=0, NotChecked=0, Total=1892 [2020-10-21 22:38:30,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-21 22:38:30,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-21 22:38:30,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-21 22:38:30,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 133 transitions. [2020-10-21 22:38:30,319 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 133 transitions. Word has length 50 [2020-10-21 22:38:30,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:38:30,319 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 133 transitions. [2020-10-21 22:38:30,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-21 22:38:30,319 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 133 transitions. [2020-10-21 22:38:30,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-21 22:38:30,320 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:38:30,320 INFO L422 BasicCegarLoop]: trace histogram [42, 2, 2, 1, 1, 1, 1, 1] [2020-10-21 22:38:30,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:38:30,529 INFO L429 AbstractCegarLoop]: === Iteration 45 === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-21 22:38:30,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:38:30,529 INFO L82 PathProgramCache]: Analyzing trace with hash -22682504, now seen corresponding path program 39 times [2020-10-21 22:38:30,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:38:30,530 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118192183] [2020-10-21 22:38:30,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:38:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:38:31,630 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-21 22:38:31,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118192183] [2020-10-21 22:38:31,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727134081] [2020-10-21 22:38:31,630 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 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown