/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 18:11:59,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 18:11:59,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 18:11:59,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-10 18:11:59,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-10 18:11:59,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-10 18:11:59,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-10 18:11:59,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-10 18:11:59,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-10 18:11:59,329 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-10 18:11:59,329 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-10 18:11:59,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-10 18:11:59,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-10 18:11:59,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-10 18:11:59,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-10 18:11:59,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-10 18:11:59,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-10 18:11:59,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-10 18:11:59,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-10 18:11:59,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-10 18:11:59,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-10 18:11:59,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-10 18:11:59,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-10 18:11:59,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-10 18:11:59,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-10 18:11:59,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 18:11:59,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 18:11:59,354 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 18:11:59,359 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.epf [2021-03-10 18:11:59,387 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 18:11:59,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 18:11:59,388 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 18:11:59,388 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 18:11:59,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 18:11:59,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 18:11:59,389 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 18:11:59,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 18:11:59,390 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 18:11:59,390 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 18:11:59,390 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 18:11:59,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 18:11:59,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 18:11:59,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 18:11:59,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 18:11:59,390 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 18:11:59,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 18:11:59,391 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 18:11:59,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 18:11:59,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 18:11:59,391 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 18:11:59,391 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 18:11:59,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 18:11:59,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 18:11:59,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 18:11:59,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 18:11:59,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 18:11:59,392 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 18:11:59,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 18:11:59,392 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 18:11:59,392 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 18:11:59,393 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 18:11:59,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 18:11:59,685 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 18:11:59,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 18:11:59,688 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 18:11:59,689 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 18:11:59,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2021-03-10 18:11:59,744 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6b5d7bea/66280cb6113d4fe2a3646e22de19865b/FLAG33d094399 [2021-03-10 18:12:00,288 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 18:12:00,288 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2021-03-10 18:12:00,305 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6b5d7bea/66280cb6113d4fe2a3646e22de19865b/FLAG33d094399 [2021-03-10 18:12:00,545 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6b5d7bea/66280cb6113d4fe2a3646e22de19865b [2021-03-10 18:12:00,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 18:12:00,556 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 18:12:00,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 18:12:00,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 18:12:00,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 18:12:00,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 06:12:00" (1/1) ... [2021-03-10 18:12:00,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41028e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 06:12:00, skipping insertion in model container [2021-03-10 18:12:00,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 06:12:00" (1/1) ... [2021-03-10 18:12:00,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 18:12:00,621 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 18:12:00,742 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i[818,831] [2021-03-10 18:12:01,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 18:12:01,014 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 18:12:01,024 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i[818,831] [2021-03-10 18:12:01,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 18:12:01,212 INFO L208 MainTranslator]: Completed translation [2021-03-10 18:12:01,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 06:12:01 WrapperNode [2021-03-10 18:12:01,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 18:12:01,214 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 18:12:01,214 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 18:12:01,214 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 18:12:01,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 06:12:01" (1/1) ... [2021-03-10 18:12:01,234 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 06:12:01" (1/1) ... [2021-03-10 18:12:01,249 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 18:12:01,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 18:12:01,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 18:12:01,250 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 18:12:01,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 06:12:01" (1/1) ... [2021-03-10 18:12:01,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 06:12:01" (1/1) ... [2021-03-10 18:12:01,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 06:12:01" (1/1) ... [2021-03-10 18:12:01,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 06:12:01" (1/1) ... [2021-03-10 18:12:01,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 06:12:01" (1/1) ... [2021-03-10 18:12:01,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 06:12:01" (1/1) ... [2021-03-10 18:12:01,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 06:12:01" (1/1) ... [2021-03-10 18:12:01,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 18:12:01,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 18:12:01,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 18:12:01,286 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 18:12:01,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 06:12:01" (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 [2021-03-10 18:12:01,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 18:12:01,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 18:12:01,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-03-10 18:12:01,346 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2021-03-10 18:12:01,346 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2021-03-10 18:12:01,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 18:12:01,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 18:12:01,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 18:12:01,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 18:12:01,348 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 18:12:01,702 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 18:12:01,703 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-10 18:12:01,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 06:12:01 BoogieIcfgContainer [2021-03-10 18:12:01,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 18:12:01,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 18:12:01,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 18:12:01,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 18:12:01,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 06:12:00" (1/3) ... [2021-03-10 18:12:01,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54597be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 06:12:01, skipping insertion in model container [2021-03-10 18:12:01,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 06:12:01" (2/3) ... [2021-03-10 18:12:01,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54597be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 06:12:01, skipping insertion in model container [2021-03-10 18:12:01,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 06:12:01" (3/3) ... [2021-03-10 18:12:01,713 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-2.i [2021-03-10 18:12:01,718 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 18:12:01,718 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 18:12:01,722 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 18:12:01,722 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 18:12:01,752 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,752 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,752 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,752 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,753 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,753 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,753 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,753 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,753 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,753 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,753 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,754 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,754 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,754 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,754 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,754 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,754 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,755 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,755 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,755 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,756 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,756 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,756 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,757 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,757 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,757 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,757 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,758 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,758 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,758 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,759 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,759 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,759 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,759 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,759 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,759 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,760 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,760 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,760 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,761 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,761 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,761 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,763 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,763 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,763 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,763 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,763 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,763 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,763 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,764 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 18:12:01,769 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-03-10 18:12:01,783 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-03-10 18:12:01,811 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 18:12:01,811 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 18:12:01,811 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 18:12:01,811 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 18:12:01,811 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 18:12:01,811 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 18:12:01,812 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 18:12:01,812 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 18:12:01,822 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 87 places, 90 transitions, 188 flow [2021-03-10 18:12:01,853 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 321 states, 319 states have (on average 2.0094043887147337) internal successors, (641), 320 states have internal predecessors, (641), 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) [2021-03-10 18:12:01,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 321 states, 319 states have (on average 2.0094043887147337) internal successors, (641), 320 states have internal predecessors, (641), 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) [2021-03-10 18:12:01,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-03-10 18:12:01,877 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:12:01,878 INFO L519 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] [2021-03-10 18:12:01,878 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:12:01,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:12:01,882 INFO L82 PathProgramCache]: Analyzing trace with hash 457646290, now seen corresponding path program 1 times [2021-03-10 18:12:01,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:12:01,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577907627] [2021-03-10 18:12:01,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:12:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:12:02,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:12:02,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577907627] [2021-03-10 18:12:02,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:12:02,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-10 18:12:02,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210151733] [2021-03-10 18:12:02,129 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-10 18:12:02,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:12:02,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-10 18:12:02,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-10 18:12:02,145 INFO L87 Difference]: Start difference. First operand has 321 states, 319 states have (on average 2.0094043887147337) internal successors, (641), 320 states have internal predecessors, (641), 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 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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) [2021-03-10 18:12:02,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:12:02,171 INFO L93 Difference]: Finished difference Result 313 states and 583 transitions. [2021-03-10 18:12:02,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-10 18:12:02,197 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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 58 [2021-03-10 18:12:02,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:12:02,208 INFO L225 Difference]: With dead ends: 313 [2021-03-10 18:12:02,208 INFO L226 Difference]: Without dead ends: 280 [2021-03-10 18:12:02,209 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-10 18:12:02,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-03-10 18:12:02,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2021-03-10 18:12:02,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 1.863799283154122) internal successors, (520), 279 states have internal predecessors, (520), 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) [2021-03-10 18:12:02,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 520 transitions. [2021-03-10 18:12:02,272 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 520 transitions. Word has length 58 [2021-03-10 18:12:02,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:12:02,272 INFO L480 AbstractCegarLoop]: Abstraction has 280 states and 520 transitions. [2021-03-10 18:12:02,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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) [2021-03-10 18:12:02,273 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 520 transitions. [2021-03-10 18:12:02,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-03-10 18:12:02,274 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:12:02,274 INFO L519 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] [2021-03-10 18:12:02,274 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 18:12:02,275 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:12:02,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:12:02,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1776923504, now seen corresponding path program 1 times [2021-03-10 18:12:02,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:12:02,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858331095] [2021-03-10 18:12:02,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:12:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:12:02,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:12:02,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858331095] [2021-03-10 18:12:02,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:12:02,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-10 18:12:02,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873577445] [2021-03-10 18:12:02,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 18:12:02,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:12:02,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 18:12:02,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 18:12:02,379 INFO L87 Difference]: Start difference. First operand 280 states and 520 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-03-10 18:12:02,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:12:02,394 INFO L93 Difference]: Finished difference Result 392 states and 744 transitions. [2021-03-10 18:12:02,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 18:12:02,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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 58 [2021-03-10 18:12:02,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:12:02,397 INFO L225 Difference]: With dead ends: 392 [2021-03-10 18:12:02,397 INFO L226 Difference]: Without dead ends: 392 [2021-03-10 18:12:02,398 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 18:12:02,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-03-10 18:12:02,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 296. [2021-03-10 18:12:02,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 1.8711864406779661) internal successors, (552), 295 states have internal predecessors, (552), 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) [2021-03-10 18:12:02,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 552 transitions. [2021-03-10 18:12:02,407 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 552 transitions. Word has length 58 [2021-03-10 18:12:02,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:12:02,407 INFO L480 AbstractCegarLoop]: Abstraction has 296 states and 552 transitions. [2021-03-10 18:12:02,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2021-03-10 18:12:02,407 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 552 transitions. [2021-03-10 18:12:02,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-03-10 18:12:02,409 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:12:02,409 INFO L519 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] [2021-03-10 18:12:02,409 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 18:12:02,409 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:12:02,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:12:02,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1835902443, now seen corresponding path program 1 times [2021-03-10 18:12:02,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:12:02,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892481021] [2021-03-10 18:12:02,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:12:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:12:02,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:12:02,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892481021] [2021-03-10 18:12:02,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 18:12:02,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-10 18:12:02,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664884476] [2021-03-10 18:12:02,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-03-10 18:12:02,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:12:02,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-03-10 18:12:02,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 18:12:02,453 INFO L87 Difference]: Start difference. First operand 296 states and 552 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-03-10 18:12:02,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:12:02,468 INFO L93 Difference]: Finished difference Result 360 states and 680 transitions. [2021-03-10 18:12:02,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-03-10 18:12:02,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 66 [2021-03-10 18:12:02,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:12:02,470 INFO L225 Difference]: With dead ends: 360 [2021-03-10 18:12:02,470 INFO L226 Difference]: Without dead ends: 360 [2021-03-10 18:12:02,470 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-03-10 18:12:02,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-03-10 18:12:02,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 312. [2021-03-10 18:12:02,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 311 states have (on average 1.8778135048231512) internal successors, (584), 311 states have internal predecessors, (584), 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) [2021-03-10 18:12:02,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 584 transitions. [2021-03-10 18:12:02,478 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 584 transitions. Word has length 66 [2021-03-10 18:12:02,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:12:02,478 INFO L480 AbstractCegarLoop]: Abstraction has 312 states and 584 transitions. [2021-03-10 18:12:02,478 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2021-03-10 18:12:02,478 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 584 transitions. [2021-03-10 18:12:02,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-03-10 18:12:02,479 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:12:02,479 INFO L519 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] [2021-03-10 18:12:02,479 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 18:12:02,479 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:12:02,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:12:02,480 INFO L82 PathProgramCache]: Analyzing trace with hash -1696975503, now seen corresponding path program 1 times [2021-03-10 18:12:02,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:12:02,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900686232] [2021-03-10 18:12:02,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:12:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:12:02,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:12:02,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900686232] [2021-03-10 18:12:02,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838430901] [2021-03-10 18:12:02,534 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 [2021-03-10 18:12:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:12:02,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 4 conjunts are in the unsatisfiable core [2021-03-10 18:12:02,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 18:12:02,893 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:12:02,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 18:12:02,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-03-10 18:12:02,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424550350] [2021-03-10 18:12:02,895 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 18:12:02,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:12:02,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 18:12:02,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-03-10 18:12:02,897 INFO L87 Difference]: Start difference. First operand 312 states and 584 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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) [2021-03-10 18:12:02,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:12:02,937 INFO L93 Difference]: Finished difference Result 440 states and 840 transitions. [2021-03-10 18:12:02,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-10 18:12:02,938 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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 71 [2021-03-10 18:12:02,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:12:02,939 INFO L225 Difference]: With dead ends: 440 [2021-03-10 18:12:02,939 INFO L226 Difference]: Without dead ends: 440 [2021-03-10 18:12:02,940 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 28.7ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-03-10 18:12:02,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-03-10 18:12:02,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 392. [2021-03-10 18:12:02,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 1.9028132992327367) internal successors, (744), 391 states have internal predecessors, (744), 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) [2021-03-10 18:12:02,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 744 transitions. [2021-03-10 18:12:02,949 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 744 transitions. Word has length 71 [2021-03-10 18:12:02,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:12:02,950 INFO L480 AbstractCegarLoop]: Abstraction has 392 states and 744 transitions. [2021-03-10 18:12:02,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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) [2021-03-10 18:12:02,950 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 744 transitions. [2021-03-10 18:12:02,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-03-10 18:12:02,955 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:12:02,956 INFO L519 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2021-03-10 18:12:03,161 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 18:12:03,161 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:12:03,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:12:03,162 INFO L82 PathProgramCache]: Analyzing trace with hash -627545685, now seen corresponding path program 2 times [2021-03-10 18:12:03,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:12:03,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347616704] [2021-03-10 18:12:03,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:12:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:12:03,241 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-03-10 18:12:03,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347616704] [2021-03-10 18:12:03,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564921419] [2021-03-10 18:12:03,241 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 [2021-03-10 18:12:03,336 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 18:12:03,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 18:12:03,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 6 conjunts are in the unsatisfiable core [2021-03-10 18:12:03,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 18:12:03,500 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 18:12:03,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 18:12:03,500 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2021-03-10 18:12:03,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750951814] [2021-03-10 18:12:03,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-03-10 18:12:03,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:12:03,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-03-10 18:12:03,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-03-10 18:12:03,502 INFO L87 Difference]: Start difference. First operand 392 states and 744 transitions. Second operand has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 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) [2021-03-10 18:12:04,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:12:04,013 INFO L93 Difference]: Finished difference Result 940 states and 1840 transitions. [2021-03-10 18:12:04,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-03-10 18:12:04,013 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 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 76 [2021-03-10 18:12:04,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:12:04,017 INFO L225 Difference]: With dead ends: 940 [2021-03-10 18:12:04,017 INFO L226 Difference]: Without dead ends: 940 [2021-03-10 18:12:04,018 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 574 ImplicationChecksByTransitivity, 391.6ms TimeCoverageRelationStatistics Valid=501, Invalid=1391, Unknown=0, NotChecked=0, Total=1892 [2021-03-10 18:12:04,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2021-03-10 18:12:04,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 688. [2021-03-10 18:12:04,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 687 states have (on average 1.9446870451237264) internal successors, (1336), 687 states have internal predecessors, (1336), 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) [2021-03-10 18:12:04,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 1336 transitions. [2021-03-10 18:12:04,039 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 1336 transitions. Word has length 76 [2021-03-10 18:12:04,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:12:04,039 INFO L480 AbstractCegarLoop]: Abstraction has 688 states and 1336 transitions. [2021-03-10 18:12:04,043 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 10.2) internal successors, (102), 10 states have internal predecessors, (102), 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) [2021-03-10 18:12:04,043 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 1336 transitions. [2021-03-10 18:12:04,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-03-10 18:12:04,045 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:12:04,045 INFO L519 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2021-03-10 18:12:04,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 18:12:04,245 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:12:04,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:12:04,246 INFO L82 PathProgramCache]: Analyzing trace with hash -525833588, now seen corresponding path program 3 times [2021-03-10 18:12:04,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:12:04,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729949704] [2021-03-10 18:12:04,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:12:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:12:04,339 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-03-10 18:12:04,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729949704] [2021-03-10 18:12:04,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947178610] [2021-03-10 18:12:04,340 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 [2021-03-10 18:12:04,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-03-10 18:12:04,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 18:12:04,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 6 conjunts are in the unsatisfiable core [2021-03-10 18:12:04,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 18:12:04,616 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-03-10 18:12:04,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 18:12:04,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2021-03-10 18:12:04,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914994865] [2021-03-10 18:12:04,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-03-10 18:12:04,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:12:04,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-03-10 18:12:04,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-03-10 18:12:04,618 INFO L87 Difference]: Start difference. First operand 688 states and 1336 transitions. Second operand has 14 states, 14 states have (on average 8.428571428571429) internal successors, (118), 14 states have internal predecessors, (118), 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) [2021-03-10 18:12:05,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:12:05,758 INFO L93 Difference]: Finished difference Result 1370 states and 2700 transitions. [2021-03-10 18:12:05,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2021-03-10 18:12:05,758 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.428571428571429) internal successors, (118), 14 states have internal predecessors, (118), 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 89 [2021-03-10 18:12:05,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:12:05,764 INFO L225 Difference]: With dead ends: 1370 [2021-03-10 18:12:05,764 INFO L226 Difference]: Without dead ends: 1370 [2021-03-10 18:12:05,767 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3377 ImplicationChecksByTransitivity, 968.4ms TimeCoverageRelationStatistics Valid=2000, Invalid=6742, Unknown=0, NotChecked=0, Total=8742 [2021-03-10 18:12:05,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2021-03-10 18:12:05,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1064. [2021-03-10 18:12:05,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 1063 states have (on average 1.9642521166509879) internal successors, (2088), 1063 states have internal predecessors, (2088), 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) [2021-03-10 18:12:05,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 2088 transitions. [2021-03-10 18:12:05,794 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 2088 transitions. Word has length 89 [2021-03-10 18:12:05,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:12:05,795 INFO L480 AbstractCegarLoop]: Abstraction has 1064 states and 2088 transitions. [2021-03-10 18:12:05,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 8.428571428571429) internal successors, (118), 14 states have internal predecessors, (118), 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) [2021-03-10 18:12:05,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 2088 transitions. [2021-03-10 18:12:05,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-03-10 18:12:05,802 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:12:05,803 INFO L519 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 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] [2021-03-10 18:12:06,019 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 18:12:06,019 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:12:06,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:12:06,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1968504799, now seen corresponding path program 4 times [2021-03-10 18:12:06,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:12:06,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578837609] [2021-03-10 18:12:06,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:12:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:12:06,139 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 7 proven. 34 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-03-10 18:12:06,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578837609] [2021-03-10 18:12:06,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853798574] [2021-03-10 18:12:06,140 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 [2021-03-10 18:12:06,209 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 18:12:06,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 18:12:06,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-10 18:12:06,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 18:12:06,390 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 7 proven. 34 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-03-10 18:12:06,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 18:12:06,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2021-03-10 18:12:06,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800624336] [2021-03-10 18:12:06,391 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-03-10 18:12:06,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:12:06,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-03-10 18:12:06,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-03-10 18:12:06,392 INFO L87 Difference]: Start difference. First operand 1064 states and 2088 transitions. Second operand has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 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) [2021-03-10 18:12:06,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:12:06,477 INFO L93 Difference]: Finished difference Result 1320 states and 2600 transitions. [2021-03-10 18:12:06,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-03-10 18:12:06,477 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 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 102 [2021-03-10 18:12:06,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:12:06,482 INFO L225 Difference]: With dead ends: 1320 [2021-03-10 18:12:06,482 INFO L226 Difference]: Without dead ends: 1320 [2021-03-10 18:12:06,484 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 86.2ms TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2021-03-10 18:12:06,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2021-03-10 18:12:06,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1224. [2021-03-10 18:12:06,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 1223 states have (on average 1.9689288634505315) internal successors, (2408), 1223 states have internal predecessors, (2408), 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) [2021-03-10 18:12:06,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 2408 transitions. [2021-03-10 18:12:06,509 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 2408 transitions. Word has length 102 [2021-03-10 18:12:06,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:12:06,509 INFO L480 AbstractCegarLoop]: Abstraction has 1224 states and 2408 transitions. [2021-03-10 18:12:06,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 13 states have internal predecessors, (94), 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) [2021-03-10 18:12:06,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 2408 transitions. [2021-03-10 18:12:06,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-03-10 18:12:06,512 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:12:06,512 INFO L519 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 3, 3, 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] [2021-03-10 18:12:06,734 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 18:12:06,734 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:12:06,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:12:06,735 INFO L82 PathProgramCache]: Analyzing trace with hash 2064958631, now seen corresponding path program 5 times [2021-03-10 18:12:06,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:12:06,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418623132] [2021-03-10 18:12:06,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:12:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:12:06,876 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 7 proven. 55 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-03-10 18:12:06,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418623132] [2021-03-10 18:12:06,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577458722] [2021-03-10 18:12:06,877 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 [2021-03-10 18:12:06,943 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-03-10 18:12:06,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 18:12:06,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 12 conjunts are in the unsatisfiable core [2021-03-10 18:12:06,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 18:12:07,099 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 7 proven. 55 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-03-10 18:12:07,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 18:12:07,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-03-10 18:12:07,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400243637] [2021-03-10 18:12:07,100 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-03-10 18:12:07,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:12:07,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-03-10 18:12:07,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-03-10 18:12:07,100 INFO L87 Difference]: Start difference. First operand 1224 states and 2408 transitions. Second operand has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 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) [2021-03-10 18:12:07,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:12:07,231 INFO L93 Difference]: Finished difference Result 1480 states and 2920 transitions. [2021-03-10 18:12:07,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-03-10 18:12:07,232 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 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 107 [2021-03-10 18:12:07,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:12:07,236 INFO L225 Difference]: With dead ends: 1480 [2021-03-10 18:12:07,236 INFO L226 Difference]: Without dead ends: 1480 [2021-03-10 18:12:07,237 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 136.7ms TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2021-03-10 18:12:07,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2021-03-10 18:12:07,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1384. [2021-03-10 18:12:07,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1383 states have (on average 1.972523499638467) internal successors, (2728), 1383 states have internal predecessors, (2728), 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) [2021-03-10 18:12:07,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2728 transitions. [2021-03-10 18:12:07,261 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2728 transitions. Word has length 107 [2021-03-10 18:12:07,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:12:07,261 INFO L480 AbstractCegarLoop]: Abstraction has 1384 states and 2728 transitions. [2021-03-10 18:12:07,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 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) [2021-03-10 18:12:07,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2728 transitions. [2021-03-10 18:12:07,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-03-10 18:12:07,264 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:12:07,264 INFO L519 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 3, 3, 3, 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] [2021-03-10 18:12:07,487 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 18:12:07,487 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:12:07,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:12:07,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1093737503, now seen corresponding path program 6 times [2021-03-10 18:12:07,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:12:07,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440515321] [2021-03-10 18:12:07,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:12:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:12:07,636 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 7 proven. 81 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-03-10 18:12:07,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440515321] [2021-03-10 18:12:07,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900059419] [2021-03-10 18:12:07,636 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 [2021-03-10 18:12:07,750 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-03-10 18:12:07,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 18:12:07,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 8 conjunts are in the unsatisfiable core [2021-03-10 18:12:07,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 18:12:08,004 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-03-10 18:12:08,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 18:12:08,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2021-03-10 18:12:08,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867425540] [2021-03-10 18:12:08,005 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-03-10 18:12:08,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:12:08,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-03-10 18:12:08,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2021-03-10 18:12:08,006 INFO L87 Difference]: Start difference. First operand 1384 states and 2728 transitions. Second operand has 22 states, 22 states have (on average 6.409090909090909) internal successors, (141), 22 states have internal predecessors, (141), 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) [2021-03-10 18:12:12,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:12:12,400 INFO L93 Difference]: Finished difference Result 2340 states and 4640 transitions. [2021-03-10 18:12:12,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 221 states. [2021-03-10 18:12:12,401 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 6.409090909090909) internal successors, (141), 22 states have internal predecessors, (141), 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 [2021-03-10 18:12:12,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:12:12,408 INFO L225 Difference]: With dead ends: 2340 [2021-03-10 18:12:12,408 INFO L226 Difference]: Without dead ends: 2340 [2021-03-10 18:12:12,425 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23533 ImplicationChecksByTransitivity, 3981.7ms TimeCoverageRelationStatistics Valid=10656, Invalid=42014, Unknown=0, NotChecked=0, Total=52670 [2021-03-10 18:12:12,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2340 states. [2021-03-10 18:12:12,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2340 to 1920. [2021-03-10 18:12:12,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1919 states have (on average 1.9801980198019802) internal successors, (3800), 1919 states have internal predecessors, (3800), 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) [2021-03-10 18:12:12,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 3800 transitions. [2021-03-10 18:12:12,463 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 3800 transitions. Word has length 112 [2021-03-10 18:12:12,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:12:12,463 INFO L480 AbstractCegarLoop]: Abstraction has 1920 states and 3800 transitions. [2021-03-10 18:12:12,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 6.409090909090909) internal successors, (141), 22 states have internal predecessors, (141), 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) [2021-03-10 18:12:12,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 3800 transitions. [2021-03-10 18:12:12,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-03-10 18:12:12,466 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:12:12,467 INFO L519 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 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] [2021-03-10 18:12:12,688 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 18:12:12,688 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:12:12,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:12:12,689 INFO L82 PathProgramCache]: Analyzing trace with hash 909001666, now seen corresponding path program 7 times [2021-03-10 18:12:12,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:12:12,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486928094] [2021-03-10 18:12:12,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:12:12,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:12:12,829 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 10 proven. 112 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-03-10 18:12:12,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486928094] [2021-03-10 18:12:12,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646103270] [2021-03-10 18:12:12,829 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 [2021-03-10 18:12:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:12:12,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 16 conjunts are in the unsatisfiable core [2021-03-10 18:12:12,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 18:12:13,117 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 10 proven. 112 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-03-10 18:12:13,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 18:12:13,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-03-10 18:12:13,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782306232] [2021-03-10 18:12:13,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-03-10 18:12:13,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:12:13,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-03-10 18:12:13,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-03-10 18:12:13,119 INFO L87 Difference]: Start difference. First operand 1920 states and 3800 transitions. Second operand has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 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) [2021-03-10 18:12:13,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:12:13,308 INFO L93 Difference]: Finished difference Result 2240 states and 4440 transitions. [2021-03-10 18:12:13,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-03-10 18:12:13,309 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 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 125 [2021-03-10 18:12:13,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:12:13,315 INFO L225 Difference]: With dead ends: 2240 [2021-03-10 18:12:13,315 INFO L226 Difference]: Without dead ends: 2240 [2021-03-10 18:12:13,316 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 199.6ms TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 18:12:13,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2021-03-10 18:12:13,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 2120. [2021-03-10 18:12:13,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2120 states, 2119 states have (on average 1.9820670127418594) internal successors, (4200), 2119 states have internal predecessors, (4200), 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) [2021-03-10 18:12:13,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2120 states to 2120 states and 4200 transitions. [2021-03-10 18:12:13,350 INFO L78 Accepts]: Start accepts. Automaton has 2120 states and 4200 transitions. Word has length 125 [2021-03-10 18:12:13,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:12:13,350 INFO L480 AbstractCegarLoop]: Abstraction has 2120 states and 4200 transitions. [2021-03-10 18:12:13,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 19 states have internal predecessors, (109), 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) [2021-03-10 18:12:13,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2120 states and 4200 transitions. [2021-03-10 18:12:13,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-03-10 18:12:13,354 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:12:13,354 INFO L519 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 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] [2021-03-10 18:12:13,567 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-03-10 18:12:13,567 INFO L428 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:12:13,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:12:13,568 INFO L82 PathProgramCache]: Analyzing trace with hash -103233412, now seen corresponding path program 8 times [2021-03-10 18:12:13,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:12:13,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691679213] [2021-03-10 18:12:13,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:12:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:12:13,726 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 10 proven. 148 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-03-10 18:12:13,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691679213] [2021-03-10 18:12:13,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318369875] [2021-03-10 18:12:13,726 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 [2021-03-10 18:12:13,821 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 18:12:13,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 18:12:13,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 18 conjunts are in the unsatisfiable core [2021-03-10 18:12:13,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 18:12:13,994 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 10 proven. 148 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-03-10 18:12:13,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 18:12:13,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2021-03-10 18:12:13,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632156578] [2021-03-10 18:12:13,995 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-03-10 18:12:13,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:12:13,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-03-10 18:12:13,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2021-03-10 18:12:13,996 INFO L87 Difference]: Start difference. First operand 2120 states and 4200 transitions. Second operand has 21 states, 21 states have (on average 5.428571428571429) internal successors, (114), 21 states have internal predecessors, (114), 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) [2021-03-10 18:12:14,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:12:14,205 INFO L93 Difference]: Finished difference Result 2440 states and 4840 transitions. [2021-03-10 18:12:14,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-03-10 18:12:14,205 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.428571428571429) internal successors, (114), 21 states have internal predecessors, (114), 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 [2021-03-10 18:12:14,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:12:14,212 INFO L225 Difference]: With dead ends: 2440 [2021-03-10 18:12:14,212 INFO L226 Difference]: Without dead ends: 2440 [2021-03-10 18:12:14,212 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 247.0ms TimeCoverageRelationStatistics Valid=427, Invalid=905, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 18:12:14,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2021-03-10 18:12:14,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2320. [2021-03-10 18:12:14,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2320 states, 2319 states have (on average 1.9836136265631739) internal successors, (4600), 2319 states have internal predecessors, (4600), 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) [2021-03-10 18:12:14,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 4600 transitions. [2021-03-10 18:12:14,266 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 4600 transitions. Word has length 130 [2021-03-10 18:12:14,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:12:14,266 INFO L480 AbstractCegarLoop]: Abstraction has 2320 states and 4600 transitions. [2021-03-10 18:12:14,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.428571428571429) internal successors, (114), 21 states have internal predecessors, (114), 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) [2021-03-10 18:12:14,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 4600 transitions. [2021-03-10 18:12:14,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-03-10 18:12:14,270 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:12:14,270 INFO L519 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 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] [2021-03-10 18:12:14,487 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-03-10 18:12:14,487 INFO L428 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:12:14,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:12:14,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1837508610, now seen corresponding path program 9 times [2021-03-10 18:12:14,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:12:14,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966027836] [2021-03-10 18:12:14,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:12:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:12:14,681 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 10 proven. 189 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-03-10 18:12:14,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966027836] [2021-03-10 18:12:14,682 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768992995] [2021-03-10 18:12:14,682 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 [2021-03-10 18:12:14,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-03-10 18:12:14,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 18:12:14,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 10 conjunts are in the unsatisfiable core [2021-03-10 18:12:14,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 18:12:15,065 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2021-03-10 18:12:15,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 18:12:15,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 11] total 30 [2021-03-10 18:12:15,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229516469] [2021-03-10 18:12:15,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 30 states [2021-03-10 18:12:15,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:12:15,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-03-10 18:12:15,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=716, Unknown=0, NotChecked=0, Total=870 [2021-03-10 18:12:15,067 INFO L87 Difference]: Start difference. First operand 2320 states and 4600 transitions. Second operand has 30 states, 30 states have (on average 5.466666666666667) internal successors, (164), 30 states have internal predecessors, (164), 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) [2021-03-10 18:12:26,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:12:26,013 INFO L93 Difference]: Finished difference Result 3550 states and 7060 transitions. [2021-03-10 18:12:26,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 407 states. [2021-03-10 18:12:26,013 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.466666666666667) internal successors, (164), 30 states have internal predecessors, (164), 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 [2021-03-10 18:12:26,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:12:26,021 INFO L225 Difference]: With dead ends: 3550 [2021-03-10 18:12:26,021 INFO L226 Difference]: Without dead ends: 3550 [2021-03-10 18:12:26,030 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 711 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 418 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83331 ImplicationChecksByTransitivity, 10299.3ms TimeCoverageRelationStatistics Valid=33414, Invalid=142566, Unknown=0, NotChecked=0, Total=175980 [2021-03-10 18:12:26,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3550 states. [2021-03-10 18:12:26,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3550 to 3016. [2021-03-10 18:12:26,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3016 states, 3015 states have (on average 1.987396351575456) internal successors, (5992), 3015 states have internal predecessors, (5992), 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) [2021-03-10 18:12:26,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3016 states to 3016 states and 5992 transitions. [2021-03-10 18:12:26,076 INFO L78 Accepts]: Start accepts. Automaton has 3016 states and 5992 transitions. Word has length 135 [2021-03-10 18:12:26,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:12:26,077 INFO L480 AbstractCegarLoop]: Abstraction has 3016 states and 5992 transitions. [2021-03-10 18:12:26,077 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 30 states, 30 states have (on average 5.466666666666667) internal successors, (164), 30 states have internal predecessors, (164), 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) [2021-03-10 18:12:26,077 INFO L276 IsEmpty]: Start isEmpty. Operand 3016 states and 5992 transitions. [2021-03-10 18:12:26,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-03-10 18:12:26,082 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:12:26,082 INFO L519 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 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] [2021-03-10 18:12:26,295 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 18:12:26,295 INFO L428 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:12:26,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:12:26,296 INFO L82 PathProgramCache]: Analyzing trace with hash -1688178153, now seen corresponding path program 10 times [2021-03-10 18:12:26,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:12:26,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041633500] [2021-03-10 18:12:26,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:12:26,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:12:26,504 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 13 proven. 235 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-03-10 18:12:26,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041633500] [2021-03-10 18:12:26,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321897512] [2021-03-10 18:12:26,505 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 [2021-03-10 18:12:26,588 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 18:12:26,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 18:12:26,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 22 conjunts are in the unsatisfiable core [2021-03-10 18:12:26,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 18:12:26,776 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 13 proven. 235 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-03-10 18:12:26,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 18:12:26,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-03-10 18:12:26,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164431021] [2021-03-10 18:12:26,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-03-10 18:12:26,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:12:26,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-03-10 18:12:26,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2021-03-10 18:12:26,777 INFO L87 Difference]: Start difference. First operand 3016 states and 5992 transitions. Second operand has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 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) [2021-03-10 18:12:27,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:12:27,059 INFO L93 Difference]: Finished difference Result 3400 states and 6760 transitions. [2021-03-10 18:12:27,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-03-10 18:12:27,064 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 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 148 [2021-03-10 18:12:27,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:12:27,074 INFO L225 Difference]: With dead ends: 3400 [2021-03-10 18:12:27,074 INFO L226 Difference]: Without dead ends: 3400 [2021-03-10 18:12:27,074 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 355.6ms TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2021-03-10 18:12:27,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3400 states. [2021-03-10 18:12:27,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3400 to 3256. [2021-03-10 18:12:27,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3256 states, 3255 states have (on average 1.9883256528417819) internal successors, (6472), 3255 states have internal predecessors, (6472), 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) [2021-03-10 18:12:27,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3256 states to 3256 states and 6472 transitions. [2021-03-10 18:12:27,123 INFO L78 Accepts]: Start accepts. Automaton has 3256 states and 6472 transitions. Word has length 148 [2021-03-10 18:12:27,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:12:27,123 INFO L480 AbstractCegarLoop]: Abstraction has 3256 states and 6472 transitions. [2021-03-10 18:12:27,123 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.96) internal successors, (124), 25 states have internal predecessors, (124), 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) [2021-03-10 18:12:27,123 INFO L276 IsEmpty]: Start isEmpty. Operand 3256 states and 6472 transitions. [2021-03-10 18:12:27,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-03-10 18:12:27,129 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:12:27,129 INFO L519 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 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] [2021-03-10 18:12:27,343 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 18:12:27,343 INFO L428 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:12:27,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:12:27,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1061370909, now seen corresponding path program 11 times [2021-03-10 18:12:27,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:12:27,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302870329] [2021-03-10 18:12:27,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:12:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:12:27,594 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 13 proven. 286 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-03-10 18:12:27,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302870329] [2021-03-10 18:12:27,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926576953] [2021-03-10 18:12:27,594 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 [2021-03-10 18:12:27,664 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-03-10 18:12:27,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 18:12:27,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 18:12:27,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 18:12:27,856 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 13 proven. 286 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-03-10 18:12:27,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 18:12:27,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2021-03-10 18:12:27,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051754259] [2021-03-10 18:12:27,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2021-03-10 18:12:27,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:12:27,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-03-10 18:12:27,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2021-03-10 18:12:27,858 INFO L87 Difference]: Start difference. First operand 3256 states and 6472 transitions. Second operand has 27 states, 27 states have (on average 4.777777777777778) internal successors, (129), 27 states have internal predecessors, (129), 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) [2021-03-10 18:12:28,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:12:28,249 INFO L93 Difference]: Finished difference Result 3640 states and 7240 transitions. [2021-03-10 18:12:28,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-03-10 18:12:28,249 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 4.777777777777778) internal successors, (129), 27 states have internal predecessors, (129), 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 [2021-03-10 18:12:28,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:12:28,261 INFO L225 Difference]: With dead ends: 3640 [2021-03-10 18:12:28,261 INFO L226 Difference]: Without dead ends: 3640 [2021-03-10 18:12:28,262 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 481.0ms TimeCoverageRelationStatistics Valid=748, Invalid=1604, Unknown=0, NotChecked=0, Total=2352 [2021-03-10 18:12:28,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2021-03-10 18:12:28,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 3496. [2021-03-10 18:12:28,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3496 states, 3495 states have (on average 1.9891273247496424) internal successors, (6952), 3495 states have internal predecessors, (6952), 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) [2021-03-10 18:12:28,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3496 states to 3496 states and 6952 transitions. [2021-03-10 18:12:28,316 INFO L78 Accepts]: Start accepts. Automaton has 3496 states and 6952 transitions. Word has length 153 [2021-03-10 18:12:28,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:12:28,317 INFO L480 AbstractCegarLoop]: Abstraction has 3496 states and 6952 transitions. [2021-03-10 18:12:28,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 27 states, 27 states have (on average 4.777777777777778) internal successors, (129), 27 states have internal predecessors, (129), 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) [2021-03-10 18:12:28,317 INFO L276 IsEmpty]: Start isEmpty. Operand 3496 states and 6952 transitions. [2021-03-10 18:12:28,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-03-10 18:12:28,323 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:12:28,323 INFO L519 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 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] [2021-03-10 18:12:28,538 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-03-10 18:12:28,538 INFO L428 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:12:28,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:12:28,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1976288727, now seen corresponding path program 12 times [2021-03-10 18:12:28,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:12:28,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087266315] [2021-03-10 18:12:28,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:12:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:12:28,825 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 13 proven. 342 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-03-10 18:12:28,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087266315] [2021-03-10 18:12:28,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632177993] [2021-03-10 18:12:28,826 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 [2021-03-10 18:12:28,941 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-03-10 18:12:28,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 18:12:28,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 12 conjunts are in the unsatisfiable core [2021-03-10 18:12:28,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 18:12:29,283 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2021-03-10 18:12:29,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 18:12:29,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 13] total 38 [2021-03-10 18:12:29,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174217422] [2021-03-10 18:12:29,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-03-10 18:12:29,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:12:29,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-03-10 18:12:29,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1164, Unknown=0, NotChecked=0, Total=1406 [2021-03-10 18:12:29,285 INFO L87 Difference]: Start difference. First operand 3496 states and 6952 transitions. Second operand has 38 states, 38 states have (on average 4.921052631578948) internal successors, (187), 38 states have internal predecessors, (187), 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) [2021-03-10 18:12:54,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:12:54,083 INFO L93 Difference]: Finished difference Result 5000 states and 9960 transitions. [2021-03-10 18:12:54,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 647 states. [2021-03-10 18:12:54,083 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.921052631578948) internal successors, (187), 38 states have internal predecessors, (187), 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 [2021-03-10 18:12:54,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:12:54,090 INFO L225 Difference]: With dead ends: 5000 [2021-03-10 18:12:54,090 INFO L226 Difference]: Without dead ends: 5000 [2021-03-10 18:12:54,104 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 1066 GetRequests, 404 SyntacticMatches, 0 SemanticMatches, 662 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215047 ImplicationChecksByTransitivity, 23744.5ms TimeCoverageRelationStatistics Valid=80318, Invalid=359914, Unknown=0, NotChecked=0, Total=440232 [2021-03-10 18:12:54,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5000 states. [2021-03-10 18:12:54,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5000 to 4352. [2021-03-10 18:12:54,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4352 states, 4351 states have (on average 1.9912663755458515) internal successors, (8664), 4351 states have internal predecessors, (8664), 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) [2021-03-10 18:12:54,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4352 states to 4352 states and 8664 transitions. [2021-03-10 18:12:54,158 INFO L78 Accepts]: Start accepts. Automaton has 4352 states and 8664 transitions. Word has length 158 [2021-03-10 18:12:54,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:12:54,158 INFO L480 AbstractCegarLoop]: Abstraction has 4352 states and 8664 transitions. [2021-03-10 18:12:54,158 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 4.921052631578948) internal successors, (187), 38 states have internal predecessors, (187), 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) [2021-03-10 18:12:54,159 INFO L276 IsEmpty]: Start isEmpty. Operand 4352 states and 8664 transitions. [2021-03-10 18:12:54,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-03-10 18:12:54,166 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:12:54,166 INFO L519 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 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] [2021-03-10 18:12:54,379 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-03-10 18:12:54,379 INFO L428 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:12:54,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:12:54,380 INFO L82 PathProgramCache]: Analyzing trace with hash 550466872, now seen corresponding path program 13 times [2021-03-10 18:12:54,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:12:54,380 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123447911] [2021-03-10 18:12:54,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:12:54,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:12:54,700 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 16 proven. 403 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-03-10 18:12:54,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123447911] [2021-03-10 18:12:54,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544272490] [2021-03-10 18:12:54,701 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 [2021-03-10 18:12:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:12:54,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 28 conjunts are in the unsatisfiable core [2021-03-10 18:12:54,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 18:12:55,041 INFO L134 CoverageAnalysis]: Checked inductivity of 529 backedges. 16 proven. 403 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-03-10 18:12:55,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 18:12:55,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-03-10 18:12:55,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744947678] [2021-03-10 18:12:55,043 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-03-10 18:12:55,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:12:55,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-03-10 18:12:55,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-03-10 18:12:55,044 INFO L87 Difference]: Start difference. First operand 4352 states and 8664 transitions. Second operand has 31 states, 31 states have (on average 4.483870967741935) internal successors, (139), 31 states have internal predecessors, (139), 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) [2021-03-10 18:12:55,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:12:55,457 INFO L93 Difference]: Finished difference Result 4800 states and 9560 transitions. [2021-03-10 18:12:55,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-03-10 18:12:55,464 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.483870967741935) internal successors, (139), 31 states have internal predecessors, (139), 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 171 [2021-03-10 18:12:55,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:12:55,470 INFO L225 Difference]: With dead ends: 4800 [2021-03-10 18:12:55,470 INFO L226 Difference]: Without dead ends: 4800 [2021-03-10 18:12:55,471 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 578.7ms TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2021-03-10 18:12:55,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4800 states. [2021-03-10 18:12:55,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4800 to 4632. [2021-03-10 18:12:55,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4632 states, 4631 states have (on average 1.9917944288490608) internal successors, (9224), 4631 states have internal predecessors, (9224), 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) [2021-03-10 18:12:55,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4632 states to 4632 states and 9224 transitions. [2021-03-10 18:12:55,529 INFO L78 Accepts]: Start accepts. Automaton has 4632 states and 9224 transitions. Word has length 171 [2021-03-10 18:12:55,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:12:55,530 INFO L480 AbstractCegarLoop]: Abstraction has 4632 states and 9224 transitions. [2021-03-10 18:12:55,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.483870967741935) internal successors, (139), 31 states have internal predecessors, (139), 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) [2021-03-10 18:12:55,530 INFO L276 IsEmpty]: Start isEmpty. Operand 4632 states and 9224 transitions. [2021-03-10 18:12:55,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-03-10 18:12:55,540 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:12:55,541 INFO L519 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 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] [2021-03-10 18:12:55,762 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-03-10 18:12:55,763 INFO L428 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:12:55,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:12:55,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1634911346, now seen corresponding path program 14 times [2021-03-10 18:12:55,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:12:55,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189433530] [2021-03-10 18:12:55,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:12:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:12:56,094 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 16 proven. 469 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-03-10 18:12:56,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189433530] [2021-03-10 18:12:56,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363758447] [2021-03-10 18:12:56,095 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 [2021-03-10 18:12:56,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 18:12:56,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 18:12:56,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 30 conjunts are in the unsatisfiable core [2021-03-10 18:12:56,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 18:12:56,426 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 16 proven. 469 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-03-10 18:12:56,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 18:12:56,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2021-03-10 18:12:56,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107869438] [2021-03-10 18:12:56,427 INFO L460 AbstractCegarLoop]: Interpolant automaton has 33 states [2021-03-10 18:12:56,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:12:56,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-03-10 18:12:56,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2021-03-10 18:12:56,427 INFO L87 Difference]: Start difference. First operand 4632 states and 9224 transitions. Second operand has 33 states, 33 states have (on average 4.363636363636363) internal successors, (144), 33 states have internal predecessors, (144), 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) [2021-03-10 18:12:57,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:12:57,024 INFO L93 Difference]: Finished difference Result 5080 states and 10120 transitions. [2021-03-10 18:12:57,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-03-10 18:12:57,024 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 4.363636363636363) internal successors, (144), 33 states have internal predecessors, (144), 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 [2021-03-10 18:12:57,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:12:57,031 INFO L225 Difference]: With dead ends: 5080 [2021-03-10 18:12:57,031 INFO L226 Difference]: Without dead ends: 5080 [2021-03-10 18:12:57,031 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 688 ImplicationChecksByTransitivity, 662.0ms TimeCoverageRelationStatistics Valid=1159, Invalid=2501, Unknown=0, NotChecked=0, Total=3660 [2021-03-10 18:12:57,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5080 states. [2021-03-10 18:12:57,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5080 to 4912. [2021-03-10 18:12:57,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4912 states, 4911 states have (on average 1.9922622683771125) internal successors, (9784), 4911 states have internal predecessors, (9784), 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) [2021-03-10 18:12:57,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4912 states to 4912 states and 9784 transitions. [2021-03-10 18:12:57,099 INFO L78 Accepts]: Start accepts. Automaton has 4912 states and 9784 transitions. Word has length 176 [2021-03-10 18:12:57,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:12:57,099 INFO L480 AbstractCegarLoop]: Abstraction has 4912 states and 9784 transitions. [2021-03-10 18:12:57,099 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 33 states, 33 states have (on average 4.363636363636363) internal successors, (144), 33 states have internal predecessors, (144), 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) [2021-03-10 18:12:57,100 INFO L276 IsEmpty]: Start isEmpty. Operand 4912 states and 9784 transitions. [2021-03-10 18:12:57,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-03-10 18:12:57,108 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:12:57,108 INFO L519 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 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] [2021-03-10 18:12:57,323 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 18:12:57,323 INFO L428 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:12:57,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:12:57,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1082255736, now seen corresponding path program 15 times [2021-03-10 18:12:57,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:12:57,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890803745] [2021-03-10 18:12:57,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:12:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:12:57,766 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 16 proven. 540 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-03-10 18:12:57,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890803745] [2021-03-10 18:12:57,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617199426] [2021-03-10 18:12:57,767 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 [2021-03-10 18:12:57,882 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-03-10 18:12:57,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 18:12:57,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 14 conjunts are in the unsatisfiable core [2021-03-10 18:12:57,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 18:12:58,336 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 540 trivial. 0 not checked. [2021-03-10 18:12:58,336 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 18:12:58,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 15] total 46 [2021-03-10 18:12:58,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434106698] [2021-03-10 18:12:58,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states [2021-03-10 18:12:58,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:12:58,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-03-10 18:12:58,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1720, Unknown=0, NotChecked=0, Total=2070 [2021-03-10 18:12:58,338 INFO L87 Difference]: Start difference. First operand 4912 states and 9784 transitions. Second operand has 46 states, 46 states have (on average 4.565217391304348) internal successors, (210), 46 states have internal predecessors, (210), 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) [2021-03-10 18:13:52,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:13:52,024 INFO L93 Difference]: Finished difference Result 6690 states and 13340 transitions. [2021-03-10 18:13:52,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 941 states. [2021-03-10 18:13:52,024 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 4.565217391304348) internal successors, (210), 46 states have internal predecessors, (210), 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 [2021-03-10 18:13:52,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:13:52,030 INFO L225 Difference]: With dead ends: 6690 [2021-03-10 18:13:52,030 INFO L226 Difference]: Without dead ends: 6690 [2021-03-10 18:13:52,071 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 1493 GetRequests, 533 SyntacticMatches, 0 SemanticMatches, 960 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460407 ImplicationChecksByTransitivity, 51766.8ms TimeCoverageRelationStatistics Valid=164058, Invalid=760424, Unknown=0, NotChecked=0, Total=924482 [2021-03-10 18:13:52,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6690 states. [2021-03-10 18:13:52,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6690 to 5928. [2021-03-10 18:13:52,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5928 states, 5927 states have (on average 1.9935886620550025) internal successors, (11816), 5927 states have internal predecessors, (11816), 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) [2021-03-10 18:13:52,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5928 states to 5928 states and 11816 transitions. [2021-03-10 18:13:52,140 INFO L78 Accepts]: Start accepts. Automaton has 5928 states and 11816 transitions. Word has length 181 [2021-03-10 18:13:52,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:13:52,141 INFO L480 AbstractCegarLoop]: Abstraction has 5928 states and 11816 transitions. [2021-03-10 18:13:52,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 46 states, 46 states have (on average 4.565217391304348) internal successors, (210), 46 states have internal predecessors, (210), 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) [2021-03-10 18:13:52,141 INFO L276 IsEmpty]: Start isEmpty. Operand 5928 states and 11816 transitions. [2021-03-10 18:13:52,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-03-10 18:13:52,150 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:13:52,150 INFO L519 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 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] [2021-03-10 18:13:52,363 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-03-10 18:13:52,363 INFO L428 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:13:52,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:13:52,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1478391795, now seen corresponding path program 16 times [2021-03-10 18:13:52,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:13:52,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081172586] [2021-03-10 18:13:52,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:13:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:13:52,863 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 19 proven. 616 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-03-10 18:13:52,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081172586] [2021-03-10 18:13:52,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329018052] [2021-03-10 18:13:52,863 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 [2021-03-10 18:13:52,937 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 18:13:52,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 18:13:52,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 34 conjunts are in the unsatisfiable core [2021-03-10 18:13:52,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 18:13:53,280 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 19 proven. 616 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-03-10 18:13:53,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 18:13:53,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-03-10 18:13:53,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223998519] [2021-03-10 18:13:53,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-03-10 18:13:53,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:13:53,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-03-10 18:13:53,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2021-03-10 18:13:53,282 INFO L87 Difference]: Start difference. First operand 5928 states and 11816 transitions. Second operand has 37 states, 37 states have (on average 4.162162162162162) internal successors, (154), 37 states have internal predecessors, (154), 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) [2021-03-10 18:13:53,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:13:53,975 INFO L93 Difference]: Finished difference Result 6440 states and 12840 transitions. [2021-03-10 18:13:53,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-03-10 18:13:53,976 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.162162162162162) internal successors, (154), 37 states have internal predecessors, (154), 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 194 [2021-03-10 18:13:53,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:13:53,980 INFO L225 Difference]: With dead ends: 6440 [2021-03-10 18:13:53,980 INFO L226 Difference]: Without dead ends: 6440 [2021-03-10 18:13:53,980 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 960.5ms TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2021-03-10 18:13:53,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6440 states. [2021-03-10 18:13:54,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6440 to 6248. [2021-03-10 18:13:54,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6248 states, 6247 states have (on average 1.9939170801984953) internal successors, (12456), 6247 states have internal predecessors, (12456), 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) [2021-03-10 18:13:54,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6248 states to 6248 states and 12456 transitions. [2021-03-10 18:13:54,048 INFO L78 Accepts]: Start accepts. Automaton has 6248 states and 12456 transitions. Word has length 194 [2021-03-10 18:13:54,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:13:54,048 INFO L480 AbstractCegarLoop]: Abstraction has 6248 states and 12456 transitions. [2021-03-10 18:13:54,048 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 4.162162162162162) internal successors, (154), 37 states have internal predecessors, (154), 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) [2021-03-10 18:13:54,048 INFO L276 IsEmpty]: Start isEmpty. Operand 6248 states and 12456 transitions. [2021-03-10 18:13:54,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-03-10 18:13:54,057 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:13:54,057 INFO L519 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 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] [2021-03-10 18:13:54,276 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 18:13:54,277 INFO L428 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:13:54,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:13:54,277 INFO L82 PathProgramCache]: Analyzing trace with hash -212879469, now seen corresponding path program 17 times [2021-03-10 18:13:54,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:13:54,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613922999] [2021-03-10 18:13:54,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:13:54,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:13:55,018 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 19 proven. 697 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-03-10 18:13:55,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613922999] [2021-03-10 18:13:55,018 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058044537] [2021-03-10 18:13:55,019 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 [2021-03-10 18:13:55,104 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-03-10 18:13:55,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 18:13:55,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 36 conjunts are in the unsatisfiable core [2021-03-10 18:13:55,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 18:13:55,482 INFO L134 CoverageAnalysis]: Checked inductivity of 872 backedges. 19 proven. 697 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-03-10 18:13:55,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 18:13:55,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2021-03-10 18:13:55,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380638461] [2021-03-10 18:13:55,483 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-03-10 18:13:55,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:13:55,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-03-10 18:13:55,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 18:13:55,484 INFO L87 Difference]: Start difference. First operand 6248 states and 12456 transitions. Second operand has 39 states, 39 states have (on average 4.076923076923077) internal successors, (159), 39 states have internal predecessors, (159), 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) [2021-03-10 18:13:56,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:13:56,284 INFO L93 Difference]: Finished difference Result 6760 states and 13480 transitions. [2021-03-10 18:13:56,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-03-10 18:13:56,285 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 4.076923076923077) internal successors, (159), 39 states have internal predecessors, (159), 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 [2021-03-10 18:13:56,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:13:56,289 INFO L225 Difference]: With dead ends: 6760 [2021-03-10 18:13:56,289 INFO L226 Difference]: Without dead ends: 6760 [2021-03-10 18:13:56,290 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 991 ImplicationChecksByTransitivity, 1109.6ms TimeCoverageRelationStatistics Valid=1660, Invalid=3596, Unknown=0, NotChecked=0, Total=5256 [2021-03-10 18:13:56,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6760 states. [2021-03-10 18:13:56,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6760 to 6568. [2021-03-10 18:13:56,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6568 states, 6567 states have (on average 1.9942134917009289) internal successors, (13096), 6567 states have internal predecessors, (13096), 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) [2021-03-10 18:13:56,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6568 states to 6568 states and 13096 transitions. [2021-03-10 18:13:56,361 INFO L78 Accepts]: Start accepts. Automaton has 6568 states and 13096 transitions. Word has length 199 [2021-03-10 18:13:56,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:13:56,361 INFO L480 AbstractCegarLoop]: Abstraction has 6568 states and 13096 transitions. [2021-03-10 18:13:56,361 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 4.076923076923077) internal successors, (159), 39 states have internal predecessors, (159), 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) [2021-03-10 18:13:56,361 INFO L276 IsEmpty]: Start isEmpty. Operand 6568 states and 13096 transitions. [2021-03-10 18:13:56,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-03-10 18:13:56,371 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:13:56,371 INFO L519 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 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] [2021-03-10 18:13:56,587 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 18:13:56,587 INFO L428 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:13:56,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:13:56,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1257223219, now seen corresponding path program 18 times [2021-03-10 18:13:56,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:13:56,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45796877] [2021-03-10 18:13:56,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:13:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:13:57,150 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 19 proven. 783 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-03-10 18:13:57,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45796877] [2021-03-10 18:13:57,150 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2556028] [2021-03-10 18:13:57,150 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 [2021-03-10 18:13:57,261 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-03-10 18:13:57,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 18:13:57,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 16 conjunts are in the unsatisfiable core [2021-03-10 18:13:57,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 18:13:58,012 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 783 trivial. 0 not checked. [2021-03-10 18:13:58,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 18:13:58,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 17] total 54 [2021-03-10 18:13:58,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996369254] [2021-03-10 18:13:58,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 54 states [2021-03-10 18:13:58,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:13:58,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-03-10 18:13:58,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=478, Invalid=2384, Unknown=0, NotChecked=0, Total=2862 [2021-03-10 18:13:58,013 INFO L87 Difference]: Start difference. First operand 6568 states and 13096 transitions. Second operand has 54 states, 54 states have (on average 4.314814814814815) internal successors, (233), 54 states have internal predecessors, (233), 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) [2021-03-10 18:14:30,795 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2021-03-10 18:16:06,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:16:06,194 INFO L93 Difference]: Finished difference Result 8620 states and 17200 transitions. [2021-03-10 18:16:06,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1289 states. [2021-03-10 18:16:06,195 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 4.314814814814815) internal successors, (233), 54 states have internal predecessors, (233), 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 [2021-03-10 18:16:06,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:16:06,202 INFO L225 Difference]: With dead ends: 8620 [2021-03-10 18:16:06,203 INFO L226 Difference]: Without dead ends: 8620 [2021-03-10 18:16:06,271 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 1992 GetRequests, 680 SyntacticMatches, 0 SemanticMatches, 1312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870601 ImplicationChecksByTransitivity, 124174.2ms TimeCoverageRelationStatistics Valid=299970, Invalid=1425312, Unknown=0, NotChecked=0, Total=1725282 [2021-03-10 18:16:06,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8620 states. [2021-03-10 18:16:06,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8620 to 7744. [2021-03-10 18:16:06,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7744 states, 7743 states have (on average 1.9950923414697146) internal successors, (15448), 7743 states have internal predecessors, (15448), 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) [2021-03-10 18:16:06,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7744 states to 7744 states and 15448 transitions. [2021-03-10 18:16:06,340 INFO L78 Accepts]: Start accepts. Automaton has 7744 states and 15448 transitions. Word has length 204 [2021-03-10 18:16:06,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:16:06,340 INFO L480 AbstractCegarLoop]: Abstraction has 7744 states and 15448 transitions. [2021-03-10 18:16:06,341 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 54 states, 54 states have (on average 4.314814814814815) internal successors, (233), 54 states have internal predecessors, (233), 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) [2021-03-10 18:16:06,341 INFO L276 IsEmpty]: Start isEmpty. Operand 7744 states and 15448 transitions. [2021-03-10 18:16:06,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2021-03-10 18:16:06,352 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:16:06,352 INFO L519 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 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] [2021-03-10 18:16:06,567 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-03-10 18:16:06,567 INFO L428 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:16:06,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:16:06,568 INFO L82 PathProgramCache]: Analyzing trace with hash -334583122, now seen corresponding path program 19 times [2021-03-10 18:16:06,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:16:06,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483955261] [2021-03-10 18:16:06,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:16:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:16:07,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 22 proven. 874 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-03-10 18:16:07,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483955261] [2021-03-10 18:16:07,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701023610] [2021-03-10 18:16:07,752 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 18:16:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:16:07,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 40 conjunts are in the unsatisfiable core [2021-03-10 18:16:07,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 18:16:08,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1106 backedges. 22 proven. 874 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-03-10 18:16:08,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 18:16:08,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2021-03-10 18:16:08,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63415329] [2021-03-10 18:16:08,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-03-10 18:16:08,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:16:08,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-03-10 18:16:08,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 18:16:08,697 INFO L87 Difference]: Start difference. First operand 7744 states and 15448 transitions. Second operand has 43 states, 43 states have (on average 3.9302325581395348) internal successors, (169), 43 states have internal predecessors, (169), 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) [2021-03-10 18:16:10,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:16:10,472 INFO L93 Difference]: Finished difference Result 8104 states and 16168 transitions. [2021-03-10 18:16:10,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-03-10 18:16:10,474 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 3.9302325581395348) internal successors, (169), 43 states have internal predecessors, (169), 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 217 [2021-03-10 18:16:10,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:16:10,480 INFO L225 Difference]: With dead ends: 8104 [2021-03-10 18:16:10,480 INFO L226 Difference]: Without dead ends: 8104 [2021-03-10 18:16:10,481 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 2319.2ms TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2021-03-10 18:16:10,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8104 states. [2021-03-10 18:16:10,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8104 to 8104. [2021-03-10 18:16:10,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8104 states, 8103 states have (on average 1.9953103788720228) internal successors, (16168), 8103 states have internal predecessors, (16168), 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) [2021-03-10 18:16:10,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8104 states to 8104 states and 16168 transitions. [2021-03-10 18:16:10,562 INFO L78 Accepts]: Start accepts. Automaton has 8104 states and 16168 transitions. Word has length 217 [2021-03-10 18:16:10,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:16:10,562 INFO L480 AbstractCegarLoop]: Abstraction has 8104 states and 16168 transitions. [2021-03-10 18:16:10,563 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 3.9302325581395348) internal successors, (169), 43 states have internal predecessors, (169), 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) [2021-03-10 18:16:10,563 INFO L276 IsEmpty]: Start isEmpty. Operand 8104 states and 16168 transitions. [2021-03-10 18:16:10,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-03-10 18:16:10,573 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:16:10,573 INFO L519 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 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] [2021-03-10 18:16:10,787 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 18:16:10,787 INFO L428 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:16:10,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:16:10,787 INFO L82 PathProgramCache]: Analyzing trace with hash -689150872, now seen corresponding path program 20 times [2021-03-10 18:16:10,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:16:10,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444830931] [2021-03-10 18:16:10,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:16:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:16:11,231 INFO L134 CoverageAnalysis]: Checked inductivity of 1202 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2021-03-10 18:16:11,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444830931] [2021-03-10 18:16:11,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116901511] [2021-03-10 18:16:11,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 18:16:11,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-03-10 18:16:11,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 18:16:11,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 18 conjunts are in the unsatisfiable core [2021-03-10 18:16:11,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 18:16:12,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1202 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2021-03-10 18:16:12,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 18:16:12,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 19] total 39 [2021-03-10 18:16:12,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419891672] [2021-03-10 18:16:12,667 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states [2021-03-10 18:16:12,667 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:16:12,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-03-10 18:16:12,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=1271, Unknown=0, NotChecked=0, Total=1482 [2021-03-10 18:16:12,668 INFO L87 Difference]: Start difference. First operand 8104 states and 16168 transitions. Second operand has 39 states, 39 states have (on average 6.051282051282051) internal successors, (236), 39 states have internal predecessors, (236), 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) [2021-03-10 18:16:51,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:16:51,653 INFO L93 Difference]: Finished difference Result 116289 states and 232538 transitions. [2021-03-10 18:16:51,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 611 states. [2021-03-10 18:16:51,655 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 6.051282051282051) internal successors, (236), 39 states have internal predecessors, (236), 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 222 [2021-03-10 18:16:51,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:16:51,788 INFO L225 Difference]: With dead ends: 116289 [2021-03-10 18:16:51,789 INFO L226 Difference]: Without dead ends: 116289 [2021-03-10 18:16:51,803 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 841 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 628 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223717 ImplicationChecksByTransitivity, 35532.8ms TimeCoverageRelationStatistics Valid=85908, Invalid=310362, Unknown=0, NotChecked=0, Total=396270 [2021-03-10 18:16:51,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116289 states. [2021-03-10 18:16:52,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116289 to 9000. [2021-03-10 18:16:52,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9000 states, 8999 states have (on average 1.9957773085898434) internal successors, (17960), 8999 states have internal predecessors, (17960), 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) [2021-03-10 18:16:52,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9000 states to 9000 states and 17960 transitions. [2021-03-10 18:16:52,375 INFO L78 Accepts]: Start accepts. Automaton has 9000 states and 17960 transitions. Word has length 222 [2021-03-10 18:16:52,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:16:52,375 INFO L480 AbstractCegarLoop]: Abstraction has 9000 states and 17960 transitions. [2021-03-10 18:16:52,376 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 39 states, 39 states have (on average 6.051282051282051) internal successors, (236), 39 states have internal predecessors, (236), 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) [2021-03-10 18:16:52,376 INFO L276 IsEmpty]: Start isEmpty. Operand 9000 states and 17960 transitions. [2021-03-10 18:16:52,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-03-10 18:16:52,383 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:16:52,383 INFO L519 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 18:16:52,583 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-03-10 18:16:52,584 INFO L428 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:16:52,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:16:52,584 INFO L82 PathProgramCache]: Analyzing trace with hash 649223747, now seen corresponding path program 21 times [2021-03-10 18:16:52,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:16:52,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620930429] [2021-03-10 18:16:52,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:16:52,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:16:53,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1267 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2021-03-10 18:16:53,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620930429] [2021-03-10 18:16:53,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337438871] [2021-03-10 18:16:53,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 18:16:53,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-03-10 18:16:53,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 18:16:53,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 20 conjunts are in the unsatisfiable core [2021-03-10 18:16:53,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 18:16:54,880 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 3 [2021-03-10 18:16:55,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1267 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2021-03-10 18:16:55,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 18:16:55,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21] total 43 [2021-03-10 18:16:55,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678246085] [2021-03-10 18:16:55,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-03-10 18:16:55,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:16:55,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-03-10 18:16:55,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1552, Unknown=0, NotChecked=0, Total=1806 [2021-03-10 18:16:55,139 INFO L87 Difference]: Start difference. First operand 9000 states and 17960 transitions. Second operand has 43 states, 43 states have (on average 5.8604651162790695) internal successors, (252), 43 states have internal predecessors, (252), 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) [2021-03-10 18:18:05,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:18:05,976 INFO L93 Difference]: Finished difference Result 149833 states and 299626 transitions. [2021-03-10 18:18:05,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 799 states. [2021-03-10 18:18:05,978 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.8604651162790695) internal successors, (252), 43 states have internal predecessors, (252), 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 230 [2021-03-10 18:18:05,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:18:06,138 INFO L225 Difference]: With dead ends: 149833 [2021-03-10 18:18:06,138 INFO L226 Difference]: Without dead ends: 149833 [2021-03-10 18:18:06,161 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 1038 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 818 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389857 ImplicationChecksByTransitivity, 64686.5ms TimeCoverageRelationStatistics Valid=144827, Invalid=526753, Unknown=0, NotChecked=0, Total=671580 [2021-03-10 18:18:06,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149833 states. [2021-03-10 18:18:07,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149833 to 9896. [2021-03-10 18:18:07,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9896 states, 9895 states have (on average 1.9961596766043457) internal successors, (19752), 9895 states have internal predecessors, (19752), 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) [2021-03-10 18:18:07,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9896 states to 9896 states and 19752 transitions. [2021-03-10 18:18:07,215 INFO L78 Accepts]: Start accepts. Automaton has 9896 states and 19752 transitions. Word has length 230 [2021-03-10 18:18:07,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:18:07,216 INFO L480 AbstractCegarLoop]: Abstraction has 9896 states and 19752 transitions. [2021-03-10 18:18:07,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 5.8604651162790695) internal successors, (252), 43 states have internal predecessors, (252), 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) [2021-03-10 18:18:07,216 INFO L276 IsEmpty]: Start isEmpty. Operand 9896 states and 19752 transitions. [2021-03-10 18:18:07,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-03-10 18:18:07,225 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:18:07,225 INFO L519 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 18:18:07,425 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-03-10 18:18:07,426 INFO L428 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:18:07,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:18:07,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1207586078, now seen corresponding path program 22 times [2021-03-10 18:18:07,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:18:07,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187533845] [2021-03-10 18:18:07,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:18:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:18:08,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 370 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2021-03-10 18:18:08,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187533845] [2021-03-10 18:18:08,209 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873999096] [2021-03-10 18:18:08,209 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 18:18:08,297 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-03-10 18:18:08,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 18:18:08,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 22 conjunts are in the unsatisfiable core [2021-03-10 18:18:08,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 18:18:10,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1340 backedges. 0 proven. 370 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2021-03-10 18:18:10,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 18:18:10,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 23] total 47 [2021-03-10 18:18:10,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57562330] [2021-03-10 18:18:10,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 47 states [2021-03-10 18:18:10,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:18:10,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-03-10 18:18:10,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=301, Invalid=1861, Unknown=0, NotChecked=0, Total=2162 [2021-03-10 18:18:10,651 INFO L87 Difference]: Start difference. First operand 9896 states and 19752 transitions. Second operand has 47 states, 47 states have (on average 5.702127659574468) internal successors, (268), 47 states have internal predecessors, (268), 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) [2021-03-10 18:20:24,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 18:20:24,739 INFO L93 Difference]: Finished difference Result 188300 states and 376560 transitions. [2021-03-10 18:20:24,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1022 states. [2021-03-10 18:20:24,742 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 5.702127659574468) internal successors, (268), 47 states have internal predecessors, (268), 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 238 [2021-03-10 18:20:24,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 18:20:24,948 INFO L225 Difference]: With dead ends: 188300 [2021-03-10 18:20:24,948 INFO L226 Difference]: Without dead ends: 188300 [2021-03-10 18:20:24,995 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 1270 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 1043 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 647582 ImplicationChecksByTransitivity, 123273.3ms TimeCoverageRelationStatistics Valid=234113, Invalid=856867, Unknown=0, NotChecked=0, Total=1090980 [2021-03-10 18:20:25,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188300 states. [2021-03-10 18:20:25,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188300 to 10792. [2021-03-10 18:20:25,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10792 states, 10791 states have (on average 1.9964785469372626) internal successors, (21544), 10791 states have internal predecessors, (21544), 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) [2021-03-10 18:20:25,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10792 states to 10792 states and 21544 transitions. [2021-03-10 18:20:25,848 INFO L78 Accepts]: Start accepts. Automaton has 10792 states and 21544 transitions. Word has length 238 [2021-03-10 18:20:25,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 18:20:25,848 INFO L480 AbstractCegarLoop]: Abstraction has 10792 states and 21544 transitions. [2021-03-10 18:20:25,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 47 states, 47 states have (on average 5.702127659574468) internal successors, (268), 47 states have internal predecessors, (268), 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) [2021-03-10 18:20:25,849 INFO L276 IsEmpty]: Start isEmpty. Operand 10792 states and 21544 transitions. [2021-03-10 18:20:25,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-03-10 18:20:25,858 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 18:20:25,858 INFO L519 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-10 18:20:26,058 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 18:20:26,058 INFO L428 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 18:20:26,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 18:20:26,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1476448007, now seen corresponding path program 23 times [2021-03-10 18:20:26,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 18:20:26,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654058222] [2021-03-10 18:20:26,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 18:20:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 18:20:27,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1421 backedges. 0 proven. 451 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2021-03-10 18:20:27,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654058222] [2021-03-10 18:20:27,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061685319] [2021-03-10 18:20:27,544 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-03-10 18:20:27,658 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2021-03-10 18:20:27,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-03-10 18:20:27,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 24 conjunts are in the unsatisfiable core [2021-03-10 18:20:27,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-03-10 18:20:31,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1421 backedges. 0 proven. 451 refuted. 0 times theorem prover too weak. 970 trivial. 0 not checked. [2021-03-10 18:20:31,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-03-10 18:20:31,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25] total 51 [2021-03-10 18:20:31,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651807536] [2021-03-10 18:20:31,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 51 states [2021-03-10 18:20:31,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 18:20:31,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-03-10 18:20:31,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=352, Invalid=2198, Unknown=0, NotChecked=0, Total=2550 [2021-03-10 18:20:31,510 INFO L87 Difference]: Start difference. First operand 10792 states and 21544 transitions. Second operand has 51 states, 51 states have (on average 5.568627450980392) internal successors, (284), 51 states have internal predecessors, (284), 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) [2021-03-10 18:23:25,867 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2021-03-10 18:23:53,035 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2021-03-10 18:24:07,152 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 9 Received shutdown request... [2021-03-10 18:24:57,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1279 states. [2021-03-10 18:24:57,312 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-03-10 18:24:57,313 WARN L545 AbstractCegarLoop]: Verification canceled [2021-03-10 18:24:57,316 WARN L224 ceAbstractionStarter]: Timeout [2021-03-10 18:24:57,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 06:24:57 BasicIcfg [2021-03-10 18:24:57,316 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 18:24:57,317 INFO L168 Benchmark]: Toolchain (without parser) took 776765.19 ms. Allocated memory was 255.9 MB in the beginning and 2.3 GB in the end (delta: 2.1 GB). Free memory was 233.8 MB in the beginning and 1.2 GB in the end (delta: -942.9 MB). Peak memory consumption was 1.1 GB. Max. memory is 16.0 GB. [2021-03-10 18:24:57,317 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 18:24:57,317 INFO L168 Benchmark]: CACSL2BoogieTranslator took 654.36 ms. Allocated memory was 255.9 MB in the beginning and 375.4 MB in the end (delta: 119.5 MB). Free memory was 233.0 MB in the beginning and 345.9 MB in the end (delta: -112.9 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.0 GB. [2021-03-10 18:24:57,317 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.78 ms. Allocated memory is still 375.4 MB. Free memory was 345.9 MB in the beginning and 343.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 18:24:57,317 INFO L168 Benchmark]: Boogie Preprocessor took 35.70 ms. Allocated memory is still 375.4 MB. Free memory was 343.3 MB in the beginning and 342.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 18:24:57,317 INFO L168 Benchmark]: RCFGBuilder took 417.75 ms. Allocated memory is still 375.4 MB. Free memory was 342.0 MB in the beginning and 314.8 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. [2021-03-10 18:24:57,317 INFO L168 Benchmark]: TraceAbstraction took 775611.13 ms. Allocated memory was 375.4 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 314.8 MB in the beginning and 1.2 GB in the end (delta: -862.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 16.0 GB. [2021-03-10 18:24:57,324 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 255.9 MB. Free memory is still 237.4 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 654.36 ms. Allocated memory was 255.9 MB in the beginning and 375.4 MB in the end (delta: 119.5 MB). Free memory was 233.0 MB in the beginning and 345.9 MB in the end (delta: -112.9 MB). Peak memory consumption was 58.7 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 35.78 ms. Allocated memory is still 375.4 MB. Free memory was 345.9 MB in the beginning and 343.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 35.70 ms. Allocated memory is still 375.4 MB. Free memory was 343.3 MB in the beginning and 342.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 417.75 ms. Allocated memory is still 375.4 MB. Free memory was 342.0 MB in the beginning and 314.8 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 775611.13 ms. Allocated memory was 375.4 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 314.8 MB in the beginning and 1.2 GB in the end (delta: -862.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 13]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable (line 13). Cancelled while BasicCegarLoop was constructing difference of abstraction (10792states) and FLOYD_HOARE automaton (currently 1279 states, 51 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 1304 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 84 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 775504.4ms, OverallIterations: 26, TraceHistogramMax: 20, EmptinessCheckTime: 172.4ms, AutomataDifference: 739558.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 41.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2649 SDtfs, 98297 SDslu, 38514 SDs, 0 SdLazy, 6526 SolverSat, 14845 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8984.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13302 GetRequests, 5258 SyntacticMatches, 0 SemanticMatches, 8043 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3950627 ImplicationChecksByTransitivity, 696244.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=10792occurred in iteration=25, InterpolantAutomatonStates: 6486, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 3458.8ms AutomataMinimizationTime, 25 MinimizatonAttempts, 430164 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 676.2ms SsaConstructionTime, 1498.4ms SatisfiabilityAnalysisTime, 23862.9ms InterpolantComputationTime, 7550 NumberOfCodeBlocks, 7086 NumberOfCodeBlocksAsserted, 164 NumberOfCheckSat, 7501 ConstructedInterpolants, 0 QuantifiedInterpolants, 15219 SizeOfPredicates, 384 NumberOfNonLiveVariables, 6821 ConjunctsInSsa, 430 ConjunctsInUnsatCore, 49 InterpolantComputations, 3 PerfectInterpolantSequences, 12523/25519 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