/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-aa1e80b [2020-12-18 00:42:12,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-18 00:42:12,323 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-18 00:42:12,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-18 00:42:12,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-18 00:42:12,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-18 00:42:12,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-18 00:42:12,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-18 00:42:12,368 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-18 00:42:12,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-18 00:42:12,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-18 00:42:12,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-18 00:42:12,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-18 00:42:12,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-18 00:42:12,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-18 00:42:12,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-18 00:42:12,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-18 00:42:12,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-18 00:42:12,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-18 00:42:12,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-18 00:42:12,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-18 00:42:12,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-18 00:42:12,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-18 00:42:12,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-18 00:42:12,400 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-18 00:42:12,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-18 00:42:12,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-18 00:42:12,416 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-18 00:42:12,417 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-18 00:42:12,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-18 00:42:12,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-18 00:42:12,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-18 00:42:12,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-18 00:42:12,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-18 00:42:12,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-18 00:42:12,427 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-18 00:42:12,428 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf [2020-12-18 00:42:12,487 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-18 00:42:12,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-18 00:42:12,492 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-18 00:42:12,492 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-18 00:42:12,492 INFO L138 SettingsManager]: * Use SBE=true [2020-12-18 00:42:12,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-18 00:42:12,493 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-18 00:42:12,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-18 00:42:12,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-18 00:42:12,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-18 00:42:12,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-18 00:42:12,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-18 00:42:12,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-18 00:42:12,496 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-18 00:42:12,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-18 00:42:12,497 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-18 00:42:12,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-18 00:42:12,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-18 00:42:12,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-18 00:42:12,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-18 00:42:12,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-18 00:42:12,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-18 00:42:12,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-18 00:42:12,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-18 00:42:12,499 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-18 00:42:12,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-18 00:42:12,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-18 00:42:12,500 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-12-18 00:42:12,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-18 00:42:12,501 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2020-12-18 00:42:12,501 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2020-12-18 00:42:12,501 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-18 00:42:12,873 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-18 00:42:12,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-18 00:42:12,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-18 00:42:12,914 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-18 00:42:12,920 INFO L275 PluginConnector]: CDTParser initialized [2020-12-18 00:42:12,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2020-12-18 00:42:13,012 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97519c2bb/6283873272414aabaae7991ccfb6acbe/FLAG270d56a46 [2020-12-18 00:42:13,823 INFO L306 CDTParser]: Found 1 translation units. [2020-12-18 00:42:13,826 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2020-12-18 00:42:13,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97519c2bb/6283873272414aabaae7991ccfb6acbe/FLAG270d56a46 [2020-12-18 00:42:13,994 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97519c2bb/6283873272414aabaae7991ccfb6acbe [2020-12-18 00:42:14,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-18 00:42:14,005 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-12-18 00:42:14,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-18 00:42:14,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-18 00:42:14,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-18 00:42:14,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 12:42:13" (1/1) ... [2020-12-18 00:42:14,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@386b7698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:42:14, skipping insertion in model container [2020-12-18 00:42:14,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 12:42:13" (1/1) ... [2020-12-18 00:42:14,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-18 00:42:14,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-18 00:42:14,746 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-18 00:42:14,761 INFO L203 MainTranslator]: Completed pre-run [2020-12-18 00:42:14,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-18 00:42:15,160 INFO L208 MainTranslator]: Completed translation [2020-12-18 00:42:15,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:42:15 WrapperNode [2020-12-18 00:42:15,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-18 00:42:15,162 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-18 00:42:15,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-18 00:42:15,163 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-18 00:42:15,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:42:15" (1/1) ... [2020-12-18 00:42:15,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:42:15" (1/1) ... [2020-12-18 00:42:15,221 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-18 00:42:15,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-18 00:42:15,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-18 00:42:15,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-18 00:42:15,231 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:42:15" (1/1) ... [2020-12-18 00:42:15,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:42:15" (1/1) ... [2020-12-18 00:42:15,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:42:15" (1/1) ... [2020-12-18 00:42:15,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:42:15" (1/1) ... [2020-12-18 00:42:15,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:42:15" (1/1) ... [2020-12-18 00:42:15,249 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:42:15" (1/1) ... [2020-12-18 00:42:15,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:42:15" (1/1) ... [2020-12-18 00:42:15,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-18 00:42:15,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-18 00:42:15,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-18 00:42:15,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-18 00:42:15,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:42:15" (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 [2020-12-18 00:42:15,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-18 00:42:15,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-18 00:42:15,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-18 00:42:15,342 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2020-12-18 00:42:15,343 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2020-12-18 00:42:15,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-18 00:42:15,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-18 00:42:15,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-18 00:42:15,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-18 00:42:15,348 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-18 00:42:16,112 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-18 00:42:16,112 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-18 00:42:16,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 12:42:16 BoogieIcfgContainer [2020-12-18 00:42:16,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-18 00:42:16,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-18 00:42:16,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-18 00:42:16,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-18 00:42:16,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 12:42:13" (1/3) ... [2020-12-18 00:42:16,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f518921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 12:42:16, skipping insertion in model container [2020-12-18 00:42:16,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:42:15" (2/3) ... [2020-12-18 00:42:16,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f518921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 12:42:16, skipping insertion in model container [2020-12-18 00:42:16,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 12:42:16" (3/3) ... [2020-12-18 00:42:16,124 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-2.i [2020-12-18 00:42:16,141 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-18 00:42:16,142 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-18 00:42:16,146 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-18 00:42:16,147 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-18 00:42:16,176 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,177 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,177 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,177 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,177 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,178 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,178 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,178 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,178 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,179 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,179 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,179 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,179 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,180 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,180 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,180 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,180 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,181 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,181 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,181 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,181 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,182 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,182 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,182 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,182 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,182 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,183 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,183 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,183 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,183 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,184 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,184 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,184 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,184 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,185 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,185 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,185 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,185 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,186 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,186 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,186 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,186 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,189 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,189 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,189 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,190 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,190 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,190 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,190 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,190 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-18 00:42:16,200 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2020-12-18 00:42:16,214 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-18 00:42:16,245 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-18 00:42:16,245 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-18 00:42:16,246 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-18 00:42:16,246 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-18 00:42:16,246 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-18 00:42:16,246 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-18 00:42:16,246 INFO L383 AbstractCegarLoop]: Minimize is NONE [2020-12-18 00:42:16,246 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-18 00:42:16,273 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 90 places, 94 transitions, 196 flow [2020-12-18 00:42:16,311 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 324 states, 322 states have (on average 2.0031055900621118) internal successors, (645), 323 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:42:16,316 INFO L276 IsEmpty]: Start isEmpty. Operand has 324 states, 322 states have (on average 2.0031055900621118) internal successors, (645), 323 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:42:16,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-18 00:42:16,333 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:42:16,334 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:42:16,335 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:42:16,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:42:16,341 INFO L82 PathProgramCache]: Analyzing trace with hash 771022703, now seen corresponding path program 1 times [2020-12-18 00:42:16,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:42:16,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054274667] [2020-12-18 00:42:16,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:42:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:42:16,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-18 00:42:16,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054274667] [2020-12-18 00:42:16,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-18 00:42:16,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-18 00:42:16,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579007310] [2020-12-18 00:42:16,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-18 00:42:16,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:42:16,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-18 00:42:16,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-18 00:42:16,677 INFO L87 Difference]: Start difference. First operand has 324 states, 322 states have (on average 2.0031055900621118) internal successors, (645), 323 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:42:16,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:42:16,725 INFO L93 Difference]: Finished difference Result 315 states and 585 transitions. [2020-12-18 00:42:16,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-18 00:42:16,727 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2020-12-18 00:42:16,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:42:16,731 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-18 00:42:16,732 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 585 transitions. Word has length 60 [2020-12-18 00:42:16,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:42:16,734 INFO L481 AbstractCegarLoop]: Abstraction has 315 states and 585 transitions. [2020-12-18 00:42:16,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 30.0) internal successors, (60), 2 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:42:16,735 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 585 transitions. [2020-12-18 00:42:16,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-18 00:42:16,751 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:42:16,752 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:42:16,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-18 00:42:16,752 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:42:16,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:42:16,756 INFO L82 PathProgramCache]: Analyzing trace with hash 704015950, now seen corresponding path program 1 times [2020-12-18 00:42:16,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:42:16,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666836708] [2020-12-18 00:42:16,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:42:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:42:16,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-18 00:42:16,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666836708] [2020-12-18 00:42:16,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-18 00:42:16,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-18 00:42:16,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948145003] [2020-12-18 00:42:16,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-18 00:42:16,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:42:16,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-18 00:42:16,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-18 00:42:16,942 INFO L87 Difference]: Start difference. First operand 315 states and 585 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:42:16,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:42:16,971 INFO L93 Difference]: Finished difference Result 441 states and 837 transitions. [2020-12-18 00:42:16,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-18 00:42:16,972 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2020-12-18 00:42:16,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:42:16,974 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-18 00:42:16,974 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 837 transitions. Word has length 60 [2020-12-18 00:42:16,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:42:16,975 INFO L481 AbstractCegarLoop]: Abstraction has 441 states and 837 transitions. [2020-12-18 00:42:16,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:42:16,975 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 837 transitions. [2020-12-18 00:42:16,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-18 00:42:16,978 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:42:16,978 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:42:16,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-18 00:42:16,979 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:42:16,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:42:16,980 INFO L82 PathProgramCache]: Analyzing trace with hash -727102181, now seen corresponding path program 1 times [2020-12-18 00:42:16,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:42:16,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150950410] [2020-12-18 00:42:16,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:42:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:42:17,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-18 00:42:17,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150950410] [2020-12-18 00:42:17,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-18 00:42:17,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-18 00:42:17,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694969384] [2020-12-18 00:42:17,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-18 00:42:17,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:42:17,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-18 00:42:17,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-18 00:42:17,094 INFO L87 Difference]: Start difference. First operand 441 states and 837 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:42:17,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:42:17,132 INFO L93 Difference]: Finished difference Result 529 states and 1013 transitions. [2020-12-18 00:42:17,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-18 00:42:17,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2020-12-18 00:42:17,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:42:17,135 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-18 00:42:17,136 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 1013 transitions. Word has length 68 [2020-12-18 00:42:17,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:42:17,138 INFO L481 AbstractCegarLoop]: Abstraction has 529 states and 1013 transitions. [2020-12-18 00:42:17,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:42:17,138 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 1013 transitions. [2020-12-18 00:42:17,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-18 00:42:17,141 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:42:17,142 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:42:17,142 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-18 00:42:17,142 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:42:17,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:42:17,145 INFO L82 PathProgramCache]: Analyzing trace with hash -713068941, now seen corresponding path program 1 times [2020-12-18 00:42:17,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:42:17,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480858391] [2020-12-18 00:42:17,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:42:17,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:42:17,300 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-18 00:42:17,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480858391] [2020-12-18 00:42:17,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [558135161] [2020-12-18 00:42:17,301 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 [2020-12-18 00:42:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:42:17,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-18 00:42:17,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-18 00:42:17,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-18 00:42:17,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-18 00:42:17,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-18 00:42:17,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340596695] [2020-12-18 00:42:17,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-18 00:42:17,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:42:17,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-18 00:42:17,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-18 00:42:17,607 INFO L87 Difference]: Start difference. First operand 529 states and 1013 transitions. Second operand has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:42:18,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:42:18,047 INFO L93 Difference]: Finished difference Result 855 states and 1665 transitions. [2020-12-18 00:42:18,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-18 00:42:18,048 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2020-12-18 00:42:18,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:42:18,049 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=220, Invalid=536, Unknown=0, NotChecked=0, Total=756 [2020-12-18 00:42:18,050 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1665 transitions. Word has length 73 [2020-12-18 00:42:18,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:42:18,050 INFO L481 AbstractCegarLoop]: Abstraction has 855 states and 1665 transitions. [2020-12-18 00:42:18,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 12.375) internal successors, (99), 8 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:42:18,051 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1665 transitions. [2020-12-18 00:42:18,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-18 00:42:18,054 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:42:18,054 INFO L504 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:42:18,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-18 00:42:18,267 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:42:18,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:42:18,268 INFO L82 PathProgramCache]: Analyzing trace with hash -83997130, now seen corresponding path program 2 times [2020-12-18 00:42:18,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:42:18,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095168783] [2020-12-18 00:42:18,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:42:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:42:18,385 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-18 00:42:18,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095168783] [2020-12-18 00:42:18,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865753024] [2020-12-18 00:42:18,386 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 [2020-12-18 00:42:18,497 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-18 00:42:18,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-18 00:42:18,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-18 00:42:18,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-18 00:42:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-18 00:42:18,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-18 00:42:18,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-12-18 00:42:18,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648213292] [2020-12-18 00:42:18,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-18 00:42:18,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:42:18,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-18 00:42:18,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-18 00:42:18,558 INFO L87 Difference]: Start difference. First operand 855 states and 1665 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:42:18,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:42:18,645 INFO L93 Difference]: Finished difference Result 1071 states and 2097 transitions. [2020-12-18 00:42:18,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-18 00:42:18,646 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2020-12-18 00:42:18,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:42:18,647 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-12-18 00:42:18,648 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 2097 transitions. Word has length 86 [2020-12-18 00:42:18,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:42:18,648 INFO L481 AbstractCegarLoop]: Abstraction has 1071 states and 2097 transitions. [2020-12-18 00:42:18,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:42:18,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 2097 transitions. [2020-12-18 00:42:18,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-12-18 00:42:18,652 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:42:18,652 INFO L504 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:42:18,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-18 00:42:18,865 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:42:18,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:42:18,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1993740975, now seen corresponding path program 3 times [2020-12-18 00:42:18,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:42:18,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374530515] [2020-12-18 00:42:18,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:42:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:42:18,970 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-12-18 00:42:18,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374530515] [2020-12-18 00:42:18,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225821613] [2020-12-18 00:42:18,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-18 00:42:19,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-18 00:42:19,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-18 00:42:19,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-18 00:42:19,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-18 00:42:19,280 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-12-18 00:42:19,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-18 00:42:19,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2020-12-18 00:42:19,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317360638] [2020-12-18 00:42:19,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-18 00:42:19,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:42:19,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-18 00:42:19,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-12-18 00:42:19,284 INFO L87 Difference]: Start difference. First operand 1071 states and 2097 transitions. Second operand has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:42:21,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:42:21,471 INFO L93 Difference]: Finished difference Result 1517 states and 2989 transitions. [2020-12-18 00:42:21,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2020-12-18 00:42:21,475 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2020-12-18 00:42:21,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:42:21,480 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3382 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2000, Invalid=6742, Unknown=0, NotChecked=0, Total=8742 [2020-12-18 00:42:21,480 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 2989 transitions. Word has length 94 [2020-12-18 00:42:21,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:42:21,480 INFO L481 AbstractCegarLoop]: Abstraction has 1517 states and 2989 transitions. [2020-12-18 00:42:21,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 9.071428571428571) internal successors, (127), 14 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:42:21,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 2989 transitions. [2020-12-18 00:42:21,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-18 00:42:21,485 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:42:21,485 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:42:21,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-18 00:42:21,699 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:42:21,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:42:21,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1997409476, now seen corresponding path program 4 times [2020-12-18 00:42:21,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:42:21,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742081858] [2020-12-18 00:42:21,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:42:21,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:42:21,807 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 22 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-18 00:42:21,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742081858] [2020-12-18 00:42:21,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130415604] [2020-12-18 00:42:21,808 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-18 00:42:21,919 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-18 00:42:21,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-18 00:42:21,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-18 00:42:21,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-18 00:42:21,993 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 22 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-18 00:42:21,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-18 00:42:21,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-12-18 00:42:21,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204805233] [2020-12-18 00:42:21,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-18 00:42:21,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:42:21,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-18 00:42:21,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-12-18 00:42:21,995 INFO L87 Difference]: Start difference. First operand 1517 states and 2989 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:42:22,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:42:22,125 INFO L93 Difference]: Finished difference Result 1747 states and 3449 transitions. [2020-12-18 00:42:22,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-18 00:42:22,126 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2020-12-18 00:42:22,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:42:22,127 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2020-12-18 00:42:22,127 INFO L78 Accepts]: Start accepts. Automaton has 1747 states and 3449 transitions. Word has length 107 [2020-12-18 00:42:22,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:42:22,128 INFO L481 AbstractCegarLoop]: Abstraction has 1747 states and 3449 transitions. [2020-12-18 00:42:22,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:42:22,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1747 states and 3449 transitions. [2020-12-18 00:42:22,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-18 00:42:22,134 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:42:22,134 INFO L504 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:42:22,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-18 00:42:22,350 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:42:22,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:42:22,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1613784980, now seen corresponding path program 5 times [2020-12-18 00:42:22,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:42:22,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664990027] [2020-12-18 00:42:22,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:42:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:42:22,503 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-18 00:42:22,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664990027] [2020-12-18 00:42:22,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947934566] [2020-12-18 00:42:22,504 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-18 00:42:22,591 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-12-18 00:42:22,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-18 00:42:22,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-18 00:42:22,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-18 00:42:22,735 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 22 proven. 34 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-18 00:42:22,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-18 00:42:22,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-12-18 00:42:22,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863153947] [2020-12-18 00:42:22,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-18 00:42:22,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:42:22,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-18 00:42:22,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-12-18 00:42:22,738 INFO L87 Difference]: Start difference. First operand 1747 states and 3449 transitions. Second operand has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:42:22,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:42:22,921 INFO L93 Difference]: Finished difference Result 1977 states and 3909 transitions. [2020-12-18 00:42:22,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-18 00:42:22,922 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2020-12-18 00:42:22,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:42:22,923 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2020-12-18 00:42:22,923 INFO L78 Accepts]: Start accepts. Automaton has 1977 states and 3909 transitions. Word has length 112 [2020-12-18 00:42:22,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:42:22,923 INFO L481 AbstractCegarLoop]: Abstraction has 1977 states and 3909 transitions. [2020-12-18 00:42:22,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 13 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:42:22,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1977 states and 3909 transitions. [2020-12-18 00:42:22,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-12-18 00:42:22,929 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:42:22,930 INFO L504 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:42:23,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-18 00:42:23,144 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:42:23,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:42:23,145 INFO L82 PathProgramCache]: Analyzing trace with hash 402331076, now seen corresponding path program 6 times [2020-12-18 00:42:23,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:42:23,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004331068] [2020-12-18 00:42:23,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:42:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:42:23,382 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 22 proven. 55 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-18 00:42:23,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004331068] [2020-12-18 00:42:23,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226382001] [2020-12-18 00:42:23,387 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-18 00:42:23,569 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2020-12-18 00:42:23,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-18 00:42:23,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-18 00:42:23,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-18 00:42:23,749 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-12-18 00:42:23,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-18 00:42:23,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2020-12-18 00:42:23,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383072197] [2020-12-18 00:42:23,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-18 00:42:23,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:42:23,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-18 00:42:23,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2020-12-18 00:42:23,752 INFO L87 Difference]: Start difference. First operand 1977 states and 3909 transitions. Second operand has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:42:33,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:42:33,344 INFO L93 Difference]: Finished difference Result 2583 states and 5121 transitions. [2020-12-18 00:42:33,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 239 states. [2020-12-18 00:42:33,344 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2020-12-18 00:42:33,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:42:33,362 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 246 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27719 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=12186, Invalid=49070, Unknown=0, NotChecked=0, Total=61256 [2020-12-18 00:42:33,362 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 5121 transitions. Word has length 117 [2020-12-18 00:42:33,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:42:33,363 INFO L481 AbstractCegarLoop]: Abstraction has 2583 states and 5121 transitions. [2020-12-18 00:42:33,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 6.818181818181818) internal successors, (150), 22 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:42:33,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 5121 transitions. [2020-12-18 00:42:33,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-18 00:42:33,371 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:42:33,371 INFO L504 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:42:33,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-18 00:42:33,583 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:42:33,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:42:33,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1345701753, now seen corresponding path program 7 times [2020-12-18 00:42:33,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:42:33,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019576971] [2020-12-18 00:42:33,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:42:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:42:33,813 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 29 proven. 81 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-12-18 00:42:33,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019576971] [2020-12-18 00:42:33,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133596870] [2020-12-18 00:42:33,814 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-18 00:42:33,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:42:33,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-18 00:42:33,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-18 00:42:34,080 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 29 proven. 81 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-12-18 00:42:34,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-18 00:42:34,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-12-18 00:42:34,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247536071] [2020-12-18 00:42:34,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-18 00:42:34,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:42:34,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-18 00:42:34,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-12-18 00:42:34,086 INFO L87 Difference]: Start difference. First operand 2583 states and 5121 transitions. Second operand has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:42:34,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:42:34,389 INFO L93 Difference]: Finished difference Result 2853 states and 5661 transitions. [2020-12-18 00:42:34,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-18 00:42:34,389 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2020-12-18 00:42:34,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:42:34,391 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2020-12-18 00:42:34,391 INFO L78 Accepts]: Start accepts. Automaton has 2853 states and 5661 transitions. Word has length 130 [2020-12-18 00:42:34,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:42:34,391 INFO L481 AbstractCegarLoop]: Abstraction has 2853 states and 5661 transitions. [2020-12-18 00:42:34,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 17 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:42:34,392 INFO L276 IsEmpty]: Start isEmpty. Operand 2853 states and 5661 transitions. [2020-12-18 00:42:34,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-12-18 00:42:34,400 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:42:34,400 INFO L504 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:42:34,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-18 00:42:34,613 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:42:34,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:42:34,615 INFO L82 PathProgramCache]: Analyzing trace with hash 2005012447, now seen corresponding path program 8 times [2020-12-18 00:42:34,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:42:34,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823549077] [2020-12-18 00:42:34,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:42:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:42:34,864 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 29 proven. 112 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-12-18 00:42:34,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823549077] [2020-12-18 00:42:34,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223322663] [2020-12-18 00:42:34,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-18 00:42:35,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-18 00:42:35,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-18 00:42:35,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-18 00:42:35,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-18 00:42:35,082 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 29 proven. 112 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-12-18 00:42:35,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-18 00:42:35,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-12-18 00:42:35,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723031993] [2020-12-18 00:42:35,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-18 00:42:35,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:42:35,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-18 00:42:35,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-12-18 00:42:35,085 INFO L87 Difference]: Start difference. First operand 2853 states and 5661 transitions. Second operand has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:42:35,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:42:35,462 INFO L93 Difference]: Finished difference Result 3123 states and 6201 transitions. [2020-12-18 00:42:35,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-18 00:42:35,463 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 135 [2020-12-18 00:42:35,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:42:35,464 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2020-12-18 00:42:35,464 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 6201 transitions. Word has length 135 [2020-12-18 00:42:35,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:42:35,464 INFO L481 AbstractCegarLoop]: Abstraction has 3123 states and 6201 transitions. [2020-12-18 00:42:35,464 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:42:35,464 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 6201 transitions. [2020-12-18 00:42:35,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-12-18 00:42:35,472 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:42:35,473 INFO L504 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:42:35,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-18 00:42:35,687 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:42:35,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:42:35,688 INFO L82 PathProgramCache]: Analyzing trace with hash 1648562055, now seen corresponding path program 9 times [2020-12-18 00:42:35,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:42:35,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258539757] [2020-12-18 00:42:35,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:42:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:42:35,945 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 29 proven. 148 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-12-18 00:42:35,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258539757] [2020-12-18 00:42:35,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564054311] [2020-12-18 00:42:35,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-18 00:42:36,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-12-18 00:42:36,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-18 00:42:36,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-18 00:42:36,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-18 00:42:36,368 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2020-12-18 00:42:36,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-18 00:42:36,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 13] total 30 [2020-12-18 00:42:36,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687864908] [2020-12-18 00:42:36,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-12-18 00:42:36,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:42:36,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-12-18 00:42:36,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=724, Unknown=0, NotChecked=0, Total=870 [2020-12-18 00:42:36,371 INFO L87 Difference]: Start difference. First operand 3123 states and 6201 transitions. Second operand has 30 states, 30 states have (on average 5.766666666666667) internal successors, (173), 30 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:43:04,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:43:04,756 INFO L93 Difference]: Finished difference Result 3889 states and 7733 transitions. [2020-12-18 00:43:04,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 443 states. [2020-12-18 00:43:04,756 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.766666666666667) internal successors, (173), 30 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2020-12-18 00:43:04,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:43:04,771 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 1010 GetRequests, 556 SyntacticMatches, 0 SemanticMatches, 454 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99125 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=38804, Invalid=168676, Unknown=0, NotChecked=0, Total=207480 [2020-12-18 00:43:04,771 INFO L78 Accepts]: Start accepts. Automaton has 3889 states and 7733 transitions. Word has length 140 [2020-12-18 00:43:04,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:43:04,772 INFO L481 AbstractCegarLoop]: Abstraction has 3889 states and 7733 transitions. [2020-12-18 00:43:04,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.766666666666667) internal successors, (173), 30 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:43:04,772 INFO L276 IsEmpty]: Start isEmpty. Operand 3889 states and 7733 transitions. [2020-12-18 00:43:04,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-12-18 00:43:04,779 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:43:04,779 INFO L504 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:43:04,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-18 00:43:04,994 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:43:04,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:43:04,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1603895558, now seen corresponding path program 10 times [2020-12-18 00:43:04,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:43:04,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028608179] [2020-12-18 00:43:04,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:43:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:43:05,317 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 36 proven. 189 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-12-18 00:43:05,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028608179] [2020-12-18 00:43:05,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167659067] [2020-12-18 00:43:05,318 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-18 00:43:05,432 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-18 00:43:05,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-18 00:43:05,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 20 conjunts are in the unsatisfiable core [2020-12-18 00:43:05,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-18 00:43:05,513 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 36 proven. 189 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-12-18 00:43:05,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-18 00:43:05,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-12-18 00:43:05,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277604415] [2020-12-18 00:43:05,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-12-18 00:43:05,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:43:05,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-12-18 00:43:05,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-12-18 00:43:05,516 INFO L87 Difference]: Start difference. First operand 3889 states and 7733 transitions. Second operand has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:43:06,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:43:06,039 INFO L93 Difference]: Finished difference Result 4199 states and 8353 transitions. [2020-12-18 00:43:06,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-12-18 00:43:06,050 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 153 [2020-12-18 00:43:06,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:43:06,054 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2020-12-18 00:43:06,054 INFO L78 Accepts]: Start accepts. Automaton has 4199 states and 8353 transitions. Word has length 153 [2020-12-18 00:43:06,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:43:06,054 INFO L481 AbstractCegarLoop]: Abstraction has 4199 states and 8353 transitions. [2020-12-18 00:43:06,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 5.434782608695652) internal successors, (125), 23 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:43:06,054 INFO L276 IsEmpty]: Start isEmpty. Operand 4199 states and 8353 transitions. [2020-12-18 00:43:06,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-12-18 00:43:06,061 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:43:06,061 INFO L504 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:43:06,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-18 00:43:06,275 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:43:06,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:43:06,276 INFO L82 PathProgramCache]: Analyzing trace with hash 173401250, now seen corresponding path program 11 times [2020-12-18 00:43:06,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:43:06,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074081259] [2020-12-18 00:43:06,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:43:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:43:06,661 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 36 proven. 235 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-12-18 00:43:06,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074081259] [2020-12-18 00:43:06,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319593783] [2020-12-18 00:43:06,662 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-18 00:43:06,754 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2020-12-18 00:43:06,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-18 00:43:06,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-18 00:43:06,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-18 00:43:06,834 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 36 proven. 235 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-12-18 00:43:06,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-18 00:43:06,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2020-12-18 00:43:06,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003987975] [2020-12-18 00:43:06,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-18 00:43:06,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:43:06,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-18 00:43:06,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-12-18 00:43:06,846 INFO L87 Difference]: Start difference. First operand 4199 states and 8353 transitions. Second operand has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:43:07,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:43:07,512 INFO L93 Difference]: Finished difference Result 4509 states and 8973 transitions. [2020-12-18 00:43:07,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-18 00:43:07,513 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2020-12-18 00:43:07,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:43:07,513 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2020-12-18 00:43:07,513 INFO L78 Accepts]: Start accepts. Automaton has 4509 states and 8973 transitions. Word has length 158 [2020-12-18 00:43:07,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:43:07,514 INFO L481 AbstractCegarLoop]: Abstraction has 4509 states and 8973 transitions. [2020-12-18 00:43:07,514 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 5.2) internal successors, (130), 25 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:43:07,514 INFO L276 IsEmpty]: Start isEmpty. Operand 4509 states and 8973 transitions. [2020-12-18 00:43:07,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-12-18 00:43:07,521 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:43:07,521 INFO L504 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:43:07,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-18 00:43:07,736 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:43:07,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:43:07,737 INFO L82 PathProgramCache]: Analyzing trace with hash -169097222, now seen corresponding path program 12 times [2020-12-18 00:43:07,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:43:07,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999843739] [2020-12-18 00:43:07,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:43:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:43:08,178 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 36 proven. 286 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-12-18 00:43:08,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999843739] [2020-12-18 00:43:08,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963039427] [2020-12-18 00:43:08,179 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-18 00:43:08,350 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-12-18 00:43:08,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-18 00:43:08,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-18 00:43:08,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-18 00:43:08,783 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2020-12-18 00:43:08,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-18 00:43:08,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 15] total 38 [2020-12-18 00:43:08,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590670414] [2020-12-18 00:43:08,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-12-18 00:43:08,784 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:43:08,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-12-18 00:43:08,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=1176, Unknown=0, NotChecked=0, Total=1406 [2020-12-18 00:43:08,785 INFO L87 Difference]: Start difference. First operand 4509 states and 8973 transitions. Second operand has 38 states, 38 states have (on average 5.157894736842105) internal successors, (196), 38 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:44:21,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:44:21,148 INFO L93 Difference]: Finished difference Result 5435 states and 10825 transitions. [2020-12-18 00:44:21,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 701 states. [2020-12-18 00:44:21,149 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 5.157894736842105) internal successors, (196), 38 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 163 [2020-12-18 00:44:21,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:44:21,171 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 1547 GetRequests, 831 SyntacticMatches, 0 SemanticMatches, 716 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253049 ImplicationChecksByTransitivity, 69.8s TimeCoverageRelationStatistics Valid=92780, Invalid=422026, Unknown=0, NotChecked=0, Total=514806 [2020-12-18 00:44:21,171 INFO L78 Accepts]: Start accepts. Automaton has 5435 states and 10825 transitions. Word has length 163 [2020-12-18 00:44:21,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:44:21,171 INFO L481 AbstractCegarLoop]: Abstraction has 5435 states and 10825 transitions. [2020-12-18 00:44:21,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 5.157894736842105) internal successors, (196), 38 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:44:21,172 INFO L276 IsEmpty]: Start isEmpty. Operand 5435 states and 10825 transitions. [2020-12-18 00:44:21,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-12-18 00:44:21,180 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:44:21,180 INFO L504 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:44:21,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-18 00:44:21,386 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:44:21,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:44:21,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1065111875, now seen corresponding path program 13 times [2020-12-18 00:44:21,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:44:21,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044909115] [2020-12-18 00:44:21,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:44:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:44:22,003 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 43 proven. 342 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-12-18 00:44:22,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044909115] [2020-12-18 00:44:22,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013089228] [2020-12-18 00:44:22,003 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-18 00:44:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:44:22,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-18 00:44:22,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-18 00:44:22,228 INFO L134 CoverageAnalysis]: Checked inductivity of 517 backedges. 43 proven. 342 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-12-18 00:44:22,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-18 00:44:22,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2020-12-18 00:44:22,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006950274] [2020-12-18 00:44:22,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-12-18 00:44:22,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:44:22,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-12-18 00:44:22,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2020-12-18 00:44:22,237 INFO L87 Difference]: Start difference. First operand 5435 states and 10825 transitions. Second operand has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:44:23,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:44:23,225 INFO L93 Difference]: Finished difference Result 5785 states and 11525 transitions. [2020-12-18 00:44:23,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-12-18 00:44:23,226 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 176 [2020-12-18 00:44:23,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:44:23,227 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2020-12-18 00:44:23,227 INFO L78 Accepts]: Start accepts. Automaton has 5785 states and 11525 transitions. Word has length 176 [2020-12-18 00:44:23,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:44:23,227 INFO L481 AbstractCegarLoop]: Abstraction has 5785 states and 11525 transitions. [2020-12-18 00:44:23,228 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.827586206896552) internal successors, (140), 29 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:44:23,228 INFO L276 IsEmpty]: Start isEmpty. Operand 5785 states and 11525 transitions. [2020-12-18 00:44:23,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-12-18 00:44:23,235 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:44:23,236 INFO L504 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:44:23,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-18 00:44:23,445 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:44:23,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:44:23,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1743229931, now seen corresponding path program 14 times [2020-12-18 00:44:23,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:44:23,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947552075] [2020-12-18 00:44:23,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:44:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:44:24,176 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 43 proven. 403 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-12-18 00:44:24,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947552075] [2020-12-18 00:44:24,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774729921] [2020-12-18 00:44:24,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-18 00:44:24,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-18 00:44:24,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-18 00:44:24,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-18 00:44:24,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-18 00:44:24,420 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 43 proven. 403 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-12-18 00:44:24,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-18 00:44:24,420 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-12-18 00:44:24,420 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324335022] [2020-12-18 00:44:24,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-12-18 00:44:24,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:44:24,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-12-18 00:44:24,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2020-12-18 00:44:24,423 INFO L87 Difference]: Start difference. First operand 5785 states and 11525 transitions. Second operand has 31 states, 31 states have (on average 4.67741935483871) internal successors, (145), 31 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:44:25,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:44:25,564 INFO L93 Difference]: Finished difference Result 6135 states and 12225 transitions. [2020-12-18 00:44:25,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-12-18 00:44:25,565 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.67741935483871) internal successors, (145), 31 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2020-12-18 00:44:25,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:44:25,566 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2020-12-18 00:44:25,566 INFO L78 Accepts]: Start accepts. Automaton has 6135 states and 12225 transitions. Word has length 181 [2020-12-18 00:44:25,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:44:25,567 INFO L481 AbstractCegarLoop]: Abstraction has 6135 states and 12225 transitions. [2020-12-18 00:44:25,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.67741935483871) internal successors, (145), 31 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:44:25,567 INFO L276 IsEmpty]: Start isEmpty. Operand 6135 states and 12225 transitions. [2020-12-18 00:44:25,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-12-18 00:44:25,575 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:44:25,575 INFO L504 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:44:25,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-18 00:44:25,776 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:44:25,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:44:25,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1998341565, now seen corresponding path program 15 times [2020-12-18 00:44:25,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:44:25,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695468722] [2020-12-18 00:44:25,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:44:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:44:26,653 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 43 proven. 469 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-12-18 00:44:26,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695468722] [2020-12-18 00:44:26,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671745365] [2020-12-18 00:44:26,657 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-18 00:44:26,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2020-12-18 00:44:26,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-18 00:44:26,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-18 00:44:26,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-18 00:44:27,495 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2020-12-18 00:44:27,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-18 00:44:27,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 17] total 46 [2020-12-18 00:44:27,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107084015] [2020-12-18 00:44:27,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-12-18 00:44:27,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:44:27,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-12-18 00:44:27,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=1736, Unknown=0, NotChecked=0, Total=2070 [2020-12-18 00:44:27,498 INFO L87 Difference]: Start difference. First operand 6135 states and 12225 transitions. Second operand has 46 states, 46 states have (on average 4.760869565217392) internal successors, (219), 46 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:45:31,428 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 7 [2020-12-18 00:47:33,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:47:33,818 INFO L93 Difference]: Finished difference Result 7221 states and 14397 transitions. [2020-12-18 00:47:33,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1013 states. [2020-12-18 00:47:33,818 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.760869565217392) internal successors, (219), 46 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 186 [2020-12-18 00:47:33,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:47:33,869 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 2192 GetRequests, 1160 SyntacticMatches, 0 SemanticMatches, 1032 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534389 ImplicationChecksByTransitivity, 181.7s TimeCoverageRelationStatistics Valid=187686, Invalid=880436, Unknown=0, NotChecked=0, Total=1068122 [2020-12-18 00:47:33,869 INFO L78 Accepts]: Start accepts. Automaton has 7221 states and 14397 transitions. Word has length 186 [2020-12-18 00:47:33,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:47:33,870 INFO L481 AbstractCegarLoop]: Abstraction has 7221 states and 14397 transitions. [2020-12-18 00:47:33,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 4.760869565217392) internal successors, (219), 46 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:47:33,870 INFO L276 IsEmpty]: Start isEmpty. Operand 7221 states and 14397 transitions. [2020-12-18 00:47:33,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-12-18 00:47:33,877 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:47:33,878 INFO L504 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:47:34,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-18 00:47:34,079 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:47:34,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:47:34,080 INFO L82 PathProgramCache]: Analyzing trace with hash -423066320, now seen corresponding path program 16 times [2020-12-18 00:47:34,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:47:34,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912753937] [2020-12-18 00:47:34,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:47:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:47:35,432 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 50 proven. 540 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-12-18 00:47:35,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912753937] [2020-12-18 00:47:35,433 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269482759] [2020-12-18 00:47:35,433 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-18 00:47:35,562 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-18 00:47:35,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-18 00:47:35,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-18 00:47:35,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-18 00:47:35,689 INFO L134 CoverageAnalysis]: Checked inductivity of 772 backedges. 50 proven. 540 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-12-18 00:47:35,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-18 00:47:35,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2020-12-18 00:47:35,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755483903] [2020-12-18 00:47:35,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-12-18 00:47:35,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:47:35,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-12-18 00:47:35,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2020-12-18 00:47:35,692 INFO L87 Difference]: Start difference. First operand 7221 states and 14397 transitions. Second operand has 35 states, 35 states have (on average 4.428571428571429) internal successors, (155), 35 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:47:37,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:47:37,827 INFO L93 Difference]: Finished difference Result 7611 states and 15177 transitions. [2020-12-18 00:47:37,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-12-18 00:47:37,829 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 4.428571428571429) internal successors, (155), 35 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2020-12-18 00:47:37,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:47:37,830 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 228 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2020-12-18 00:47:37,831 INFO L78 Accepts]: Start accepts. Automaton has 7611 states and 15177 transitions. Word has length 199 [2020-12-18 00:47:37,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:47:37,831 INFO L481 AbstractCegarLoop]: Abstraction has 7611 states and 15177 transitions. [2020-12-18 00:47:37,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 4.428571428571429) internal successors, (155), 35 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:47:37,831 INFO L276 IsEmpty]: Start isEmpty. Operand 7611 states and 15177 transitions. [2020-12-18 00:47:37,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-12-18 00:47:37,841 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:47:37,842 INFO L504 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:47:38,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-18 00:47:38,043 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:47:38,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:47:38,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1883749160, now seen corresponding path program 17 times [2020-12-18 00:47:38,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:47:38,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695906313] [2020-12-18 00:47:38,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:47:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:47:39,667 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 50 proven. 616 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-12-18 00:47:39,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695906313] [2020-12-18 00:47:39,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49246855] [2020-12-18 00:47:39,668 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-18 00:47:39,780 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2020-12-18 00:47:39,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-18 00:47:39,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-18 00:47:39,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-18 00:47:39,952 INFO L134 CoverageAnalysis]: Checked inductivity of 848 backedges. 50 proven. 616 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-12-18 00:47:39,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-18 00:47:39,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2020-12-18 00:47:39,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884280604] [2020-12-18 00:47:39,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-12-18 00:47:39,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:47:39,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-12-18 00:47:39,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2020-12-18 00:47:39,954 INFO L87 Difference]: Start difference. First operand 7611 states and 15177 transitions. Second operand has 37 states, 37 states have (on average 4.324324324324325) internal successors, (160), 37 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:47:42,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-18 00:47:42,365 INFO L93 Difference]: Finished difference Result 8001 states and 15957 transitions. [2020-12-18 00:47:42,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-12-18 00:47:42,367 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.324324324324325) internal successors, (160), 37 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 204 [2020-12-18 00:47:42,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-18 00:47:42,369 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2020-12-18 00:47:42,369 INFO L78 Accepts]: Start accepts. Automaton has 8001 states and 15957 transitions. Word has length 204 [2020-12-18 00:47:42,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-18 00:47:42,369 INFO L481 AbstractCegarLoop]: Abstraction has 8001 states and 15957 transitions. [2020-12-18 00:47:42,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.324324324324325) internal successors, (160), 37 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:47:42,369 INFO L276 IsEmpty]: Start isEmpty. Operand 8001 states and 15957 transitions. [2020-12-18 00:47:42,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-12-18 00:47:42,378 INFO L496 BasicCegarLoop]: Found error trace [2020-12-18 00:47:42,378 INFO L504 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-18 00:47:42,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-18 00:47:42,579 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-18 00:47:42,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-18 00:47:42,580 INFO L82 PathProgramCache]: Analyzing trace with hash 813043248, now seen corresponding path program 18 times [2020-12-18 00:47:42,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-18 00:47:42,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842463079] [2020-12-18 00:47:42,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-18 00:47:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-18 00:47:44,237 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 50 proven. 697 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2020-12-18 00:47:44,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842463079] [2020-12-18 00:47:44,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83905696] [2020-12-18 00:47:44,238 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-18 00:47:44,437 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2020-12-18 00:47:44,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-18 00:47:44,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-18 00:47:44,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-18 00:47:45,802 INFO L134 CoverageAnalysis]: Checked inductivity of 929 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2020-12-18 00:47:45,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-18 00:47:45,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 19] total 54 [2020-12-18 00:47:45,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041004501] [2020-12-18 00:47:45,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-12-18 00:47:45,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-18 00:47:45,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-12-18 00:47:45,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=2404, Unknown=0, NotChecked=0, Total=2862 [2020-12-18 00:47:45,805 INFO L87 Difference]: Start difference. First operand 8001 states and 15957 transitions. Second operand has 54 states, 54 states have (on average 4.481481481481482) internal successors, (242), 54 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-18 00:47:49,566 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-12-18 00:47:59,383 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 9 Received shutdown request... [2020-12-18 00:55:41,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1358 states. [2020-12-18 00:55:42,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-18 00:55:42,008 WARN L546 AbstractCegarLoop]: Verification canceled [2020-12-18 00:55:42,014 WARN L250 ceAbstractionStarter]: Timeout [2020-12-18 00:55:42,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 12:55:42 BasicIcfg [2020-12-18 00:55:42,015 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-18 00:55:42,016 INFO L168 Benchmark]: Toolchain (without parser) took 808010.63 ms. Allocated memory was 302.0 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 276.2 MB in the beginning and 1.1 GB in the end (delta: -812.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 16.0 GB. [2020-12-18 00:55:42,016 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 302.0 MB. Free memory is still 272.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-12-18 00:55:42,017 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1150.76 ms. Allocated memory is still 302.0 MB. Free memory was 276.0 MB in the beginning and 231.4 MB in the end (delta: 44.6 MB). Peak memory consumption was 45.2 MB. Max. memory is 16.0 GB. [2020-12-18 00:55:42,017 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.68 ms. Allocated memory is still 302.0 MB. Free memory was 231.4 MB in the beginning and 228.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2020-12-18 00:55:42,017 INFO L168 Benchmark]: Boogie Preprocessor took 33.92 ms. Allocated memory is still 302.0 MB. Free memory was 228.3 MB in the beginning and 227.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-12-18 00:55:42,018 INFO L168 Benchmark]: RCFGBuilder took 858.41 ms. Allocated memory is still 302.0 MB. Free memory was 227.2 MB in the beginning and 199.9 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2020-12-18 00:55:42,018 INFO L168 Benchmark]: TraceAbstraction took 805897.93 ms. Allocated memory was 302.0 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 198.9 MB in the beginning and 1.1 GB in the end (delta: -889.8 MB). Peak memory consumption was 1.0 GB. Max. memory is 16.0 GB. [2020-12-18 00:55:42,036 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 302.0 MB. Free memory is still 272.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 1150.76 ms. Allocated memory is still 302.0 MB. Free memory was 276.0 MB in the beginning and 231.4 MB in the end (delta: 44.6 MB). Peak memory consumption was 45.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 58.68 ms. Allocated memory is still 302.0 MB. Free memory was 231.4 MB in the beginning and 228.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 33.92 ms. Allocated memory is still 302.0 MB. Free memory was 228.3 MB in the beginning and 227.2 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 858.41 ms. Allocated memory is still 302.0 MB. Free memory was 227.2 MB in the beginning and 199.9 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 805897.93 ms. Allocated memory was 302.0 MB in the beginning and 1.8 GB in the end (delta: 1.5 GB). Free memory was 198.9 MB in the beginning and 1.1 GB in the end (delta: -889.8 MB). Peak memory consumption was 1.0 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 12]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 12). Cancelled while BasicCegarLoop was constructing difference of abstraction (8001states) and FLOYD_HOARE automaton (currently 1358 states, 54 states before enhancement),while ReachableStatesComputation was computing reachable states (8537 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 87 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 805.7s, OverallIterations: 21, TraceHistogramMax: 17, AutomataDifference: 784.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2293 SDtfs, 44398 SDslu, 31818 SDs, 0 SdLazy, 4575 SolverSat, 4948 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10856 GetRequests, 6486 SyntacticMatches, 0 SemanticMatches, 4370 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1886491 ImplicationChecksByTransitivity, 769.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8001occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 13.2s InterpolantComputationTime, 5434 NumberOfCodeBlocks, 4981 NumberOfCodeBlocksAsserted, 126 NumberOfCheckSat, 5395 ConstructedInterpolants, 0 QuantifiedInterpolants, 1475595 SizeOfPredicates, 280 NumberOfNonLiveVariables, 4699 ConjunctsInSsa, 298 ConjunctsInUnsatCore, 39 InterpolantComputations, 3 PerfectInterpolantSequences, 5056/12577 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown