/usr/bin/java -Xmx8000000000 -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 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-12 17:40:10,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-12 17:40:10,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-12 17:40:10,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-12 17:40:10,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-12 17:40:10,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-12 17:40:10,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-12 17:40:10,990 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 [2021-06-12 17:40:11,008 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-12 17:40:11,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-12 17:40:11,008 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-12 17:40:11,009 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-12 17:40:11,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-12 17:40:11,010 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-12 17:40:11,010 INFO L138 SettingsManager]: * Use SBE=true [2021-06-12 17:40:11,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-12 17:40:11,010 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-12 17:40:11,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-12 17:40:11,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-12 17:40:11,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-12 17:40:11,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-12 17:40:11,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-12 17:40:11,011 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-12 17:40:11,011 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-12 17:40:11,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-12 17:40:11,011 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-12 17:40:11,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-12 17:40:11,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-12 17:40:11,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-12 17:40:11,012 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-12 17:40:11,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-12 17:40:11,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 17:40:11,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-12 17:40:11,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-12 17:40:11,013 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-12 17:40:11,013 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-12 17:40:11,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-12 17:40:11,013 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-12 17:40:11,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-12 17:40:11,013 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-12 17:40:11,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-12 17:40:11,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-12 17:40:11,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-12 17:40:11,265 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-12 17:40:11,266 INFO L275 PluginConnector]: CDTParser initialized [2021-06-12 17:40:11,267 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2021-06-12 17:40:11,318 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a394e8ae9/71a467ee224d43b5a689e58713819827/FLAGf688e6ee4 [2021-06-12 17:40:11,771 INFO L306 CDTParser]: Found 1 translation units. [2021-06-12 17:40:11,772 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-C-DAC/pthread-demo-datarace-2.i [2021-06-12 17:40:11,784 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a394e8ae9/71a467ee224d43b5a689e58713819827/FLAGf688e6ee4 [2021-06-12 17:40:12,114 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a394e8ae9/71a467ee224d43b5a689e58713819827 [2021-06-12 17:40:12,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-12 17:40:12,121 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-12 17:40:12,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-12 17:40:12,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-12 17:40:12,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-12 17:40:12,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 05:40:12" (1/1) ... [2021-06-12 17:40:12,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7acd0a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:40:12, skipping insertion in model container [2021-06-12 17:40:12,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 05:40:12" (1/1) ... [2021-06-12 17:40:12,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-12 17:40:12,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-12 17:40:12,327 WARN L224 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] [2021-06-12 17:40:12,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 17:40:12,640 INFO L203 MainTranslator]: Completed pre-run [2021-06-12 17:40:12,648 WARN L224 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] [2021-06-12 17:40:12,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 17:40:12,802 INFO L208 MainTranslator]: Completed translation [2021-06-12 17:40:12,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:40:12 WrapperNode [2021-06-12 17:40:12,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-12 17:40:12,806 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-12 17:40:12,806 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-12 17:40:12,806 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-12 17:40:12,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:40:12" (1/1) ... [2021-06-12 17:40:12,840 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:40:12" (1/1) ... [2021-06-12 17:40:12,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-12 17:40:12,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-12 17:40:12,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-12 17:40:12,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-12 17:40:12,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:40:12" (1/1) ... [2021-06-12 17:40:12,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:40:12" (1/1) ... [2021-06-12 17:40:12,861 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:40:12" (1/1) ... [2021-06-12 17:40:12,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:40:12" (1/1) ... [2021-06-12 17:40:12,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:40:12" (1/1) ... [2021-06-12 17:40:12,867 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:40:12" (1/1) ... [2021-06-12 17:40:12,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:40:12" (1/1) ... [2021-06-12 17:40:12,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-12 17:40:12,871 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-12 17:40:12,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-12 17:40:12,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-12 17:40:12,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:40:12" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 17:40:12,933 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-12 17:40:12,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-12 17:40:12,933 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-06-12 17:40:12,934 INFO L130 BoogieDeclarations]: Found specification of procedure thread_function_datarace [2021-06-12 17:40:12,934 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_function_datarace [2021-06-12 17:40:12,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-12 17:40:12,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-12 17:40:12,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-12 17:40:12,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-12 17:40:12,937 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-12 17:40:13,326 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-12 17:40:13,327 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-12 17:40:13,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 05:40:13 BoogieIcfgContainer [2021-06-12 17:40:13,328 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-12 17:40:13,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-12 17:40:13,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-12 17:40:13,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-12 17:40:13,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.06 05:40:12" (1/3) ... [2021-06-12 17:40:13,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6056f4ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 05:40:13, skipping insertion in model container [2021-06-12 17:40:13,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:40:12" (2/3) ... [2021-06-12 17:40:13,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6056f4ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 05:40:13, skipping insertion in model container [2021-06-12 17:40:13,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 05:40:13" (3/3) ... [2021-06-12 17:40:13,334 INFO L111 eAbstractionObserver]: Analyzing ICFG pthread-demo-datarace-2.i [2021-06-12 17:40:13,338 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-12 17:40:13,338 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-12 17:40:13,339 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-12 17:40:13,339 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-12 17:40:13,363 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,363 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,363 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,363 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,363 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,363 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,363 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,364 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,364 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,364 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,364 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,364 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,364 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,364 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,364 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,365 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,365 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,365 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,365 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,365 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,365 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,365 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,365 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,366 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,366 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,366 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,366 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,366 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,366 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,366 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,366 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,366 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,367 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,367 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,367 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,367 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,367 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,367 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,367 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,367 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,367 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,368 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,369 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,369 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~nondet34| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,369 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#t~post33| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,369 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,369 WARN L313 ript$VariableManager]: TermVariabe |thread_function_dataraceThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,370 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,370 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,370 WARN L313 ript$VariableManager]: TermVariabe thread_function_dataraceThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:40:13,375 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-06-12 17:40:13,389 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-12 17:40:13,412 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 17:40:13,412 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 17:40:13,412 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 17:40:13,412 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 17:40:13,412 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 17:40:13,412 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 17:40:13,413 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 17:40:13,413 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-12 17:40:13,428 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 91 places, 94 transitions, 196 flow [2021-06-12 17:40:13,456 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 353 states, 351 states have (on average 2.0085470085470085) internal successors, (705), 352 states have internal predecessors, (705), 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) [2021-06-12 17:40:13,458 INFO L276 IsEmpty]: Start isEmpty. Operand has 353 states, 351 states have (on average 2.0085470085470085) internal successors, (705), 352 states have internal predecessors, (705), 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) [2021-06-12 17:40:13,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-12 17:40:13,468 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:40:13,469 INFO L472 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] [2021-06-12 17:40:13,469 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:40:13,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:40:13,472 INFO L82 PathProgramCache]: Analyzing trace with hash 597394025, now seen corresponding path program 1 times [2021-06-12 17:40:13,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:40:13,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980247491] [2021-06-12 17:40:13,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:40:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:40:13,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:40:13,645 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:40:13,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980247491] [2021-06-12 17:40:13,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980247491] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:40:13,646 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:40:13,646 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-12 17:40:13,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298129894] [2021-06-12 17:40:13,649 INFO L462 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-06-12 17:40:13,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:40:13,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-06-12 17:40:13,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-06-12 17:40:13,675 INFO L87 Difference]: Start difference. First operand has 353 states, 351 states have (on average 2.0085470085470085) internal successors, (705), 352 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 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) [2021-06-12 17:40:13,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:40:13,704 INFO L93 Difference]: Finished difference Result 345 states and 645 transitions. [2021-06-12 17:40:13,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-12 17:40:13,705 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 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 61 [2021-06-12 17:40:13,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:40:13,716 INFO L225 Difference]: With dead ends: 345 [2021-06-12 17:40:13,717 INFO L226 Difference]: Without dead ends: 297 [2021-06-12 17:40:13,718 INFO L728 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 [2021-06-12 17:40:13,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-06-12 17:40:13,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2021-06-12 17:40:13,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.864864864864865) internal successors, (552), 296 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) [2021-06-12 17:40:13,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 552 transitions. [2021-06-12 17:40:13,774 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 552 transitions. Word has length 61 [2021-06-12 17:40:13,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:40:13,775 INFO L482 AbstractCegarLoop]: Abstraction has 297 states and 552 transitions. [2021-06-12 17:40:13,775 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 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) [2021-06-12 17:40:13,776 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 552 transitions. [2021-06-12 17:40:13,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-12 17:40:13,786 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:40:13,786 INFO L472 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] [2021-06-12 17:40:13,787 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-12 17:40:13,790 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:40:13,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:40:13,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1637175769, now seen corresponding path program 1 times [2021-06-12 17:40:13,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:40:13,791 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53006663] [2021-06-12 17:40:13,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:40:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:40:13,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:40:13,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:40:13,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53006663] [2021-06-12 17:40:13,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53006663] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:40:13,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:40:13,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-12 17:40:13,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384491246] [2021-06-12 17:40:13,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 17:40:13,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:40:13,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 17:40:13,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 17:40:13,897 INFO L87 Difference]: Start difference. First operand 297 states and 552 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2021-06-12 17:40:13,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:40:13,918 INFO L93 Difference]: Finished difference Result 416 states and 790 transitions. [2021-06-12 17:40:13,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 17:40:13,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2021-06-12 17:40:13,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:40:13,921 INFO L225 Difference]: With dead ends: 416 [2021-06-12 17:40:13,921 INFO L226 Difference]: Without dead ends: 416 [2021-06-12 17:40:13,921 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-12 17:40:13,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-06-12 17:40:13,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 314. [2021-06-12 17:40:13,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 1.8722044728434504) internal successors, (586), 313 states have internal predecessors, (586), 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) [2021-06-12 17:40:13,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 586 transitions. [2021-06-12 17:40:13,932 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 586 transitions. Word has length 61 [2021-06-12 17:40:13,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:40:13,932 INFO L482 AbstractCegarLoop]: Abstraction has 314 states and 586 transitions. [2021-06-12 17:40:13,932 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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) [2021-06-12 17:40:13,932 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 586 transitions. [2021-06-12 17:40:13,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-06-12 17:40:13,933 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:40:13,933 INFO L472 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] [2021-06-12 17:40:13,933 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-12 17:40:13,933 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:40:13,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:40:13,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1102163604, now seen corresponding path program 1 times [2021-06-12 17:40:13,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:40:13,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754880029] [2021-06-12 17:40:13,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:40:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:40:14,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:40:14,010 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:40:14,010 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754880029] [2021-06-12 17:40:14,010 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754880029] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:14,011 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790024218] [2021-06-12 17:40:14,011 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 [2021-06-12 17:40:14,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:40:14,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 2 conjunts are in the unsatisfiable core [2021-06-12 17:40:14,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 17:40:14,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-12 17:40:14,262 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790024218] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:40:14,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-06-12 17:40:14,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-06-12 17:40:14,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534124965] [2021-06-12 17:40:14,262 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-12 17:40:14,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:40:14,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-12 17:40:14,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-12 17:40:14,263 INFO L87 Difference]: Start difference. First operand 314 states and 586 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-06-12 17:40:14,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:40:14,273 INFO L93 Difference]: Finished difference Result 378 states and 714 transitions. [2021-06-12 17:40:14,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-12 17:40:14,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 69 [2021-06-12 17:40:14,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:40:14,275 INFO L225 Difference]: With dead ends: 378 [2021-06-12 17:40:14,275 INFO L226 Difference]: Without dead ends: 378 [2021-06-12 17:40:14,276 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 14.2ms TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-06-12 17:40:14,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-06-12 17:40:14,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 330. [2021-06-12 17:40:14,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 1.878419452887538) internal successors, (618), 329 states have internal predecessors, (618), 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) [2021-06-12 17:40:14,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 618 transitions. [2021-06-12 17:40:14,285 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 618 transitions. Word has length 69 [2021-06-12 17:40:14,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:40:14,285 INFO L482 AbstractCegarLoop]: Abstraction has 330 states and 618 transitions. [2021-06-12 17:40:14,285 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2021-06-12 17:40:14,285 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 618 transitions. [2021-06-12 17:40:14,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-06-12 17:40:14,286 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:40:14,286 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:40:14,504 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-06-12 17:40:14,505 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:40:14,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:40:14,505 INFO L82 PathProgramCache]: Analyzing trace with hash 278330427, now seen corresponding path program 1 times [2021-06-12 17:40:14,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:40:14,505 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635437544] [2021-06-12 17:40:14,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:40:14,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:40:14,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-12 17:40:14,547 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:40:14,547 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635437544] [2021-06-12 17:40:14,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635437544] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:14,582 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968778531] [2021-06-12 17:40:14,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-06-12 17:40:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:40:14,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-12 17:40:14,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 17:40:14,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-12 17:40:14,767 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968778531] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:14,767 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 17:40:14,767 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-06-12 17:40:14,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633232587] [2021-06-12 17:40:14,767 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:40:14,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:40:14,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:40:14,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:40:14,768 INFO L87 Difference]: Start difference. First operand 330 states and 618 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2021-06-12 17:40:14,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:40:14,800 INFO L93 Difference]: Finished difference Result 582 states and 1122 transitions. [2021-06-12 17:40:14,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-12 17:40:14,800 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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 74 [2021-06-12 17:40:14,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:40:14,802 INFO L225 Difference]: With dead ends: 582 [2021-06-12 17:40:14,802 INFO L226 Difference]: Without dead ends: 582 [2021-06-12 17:40:14,802 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 22.9ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-06-12 17:40:14,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2021-06-12 17:40:14,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 474. [2021-06-12 17:40:14,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 473 states have (on average 1.9154334038054968) internal successors, (906), 473 states have internal predecessors, (906), 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) [2021-06-12 17:40:14,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 906 transitions. [2021-06-12 17:40:14,825 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 906 transitions. Word has length 74 [2021-06-12 17:40:14,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:40:14,825 INFO L482 AbstractCegarLoop]: Abstraction has 474 states and 906 transitions. [2021-06-12 17:40:14,825 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 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) [2021-06-12 17:40:14,825 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 906 transitions. [2021-06-12 17:40:14,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-06-12 17:40:14,826 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:40:14,826 INFO L472 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:40:15,027 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 17:40:15,027 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:40:15,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:40:15,028 INFO L82 PathProgramCache]: Analyzing trace with hash 834375958, now seen corresponding path program 2 times [2021-06-12 17:40:15,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:40:15,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196631129] [2021-06-12 17:40:15,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:40:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:40:15,091 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-06-12 17:40:15,091 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:40:15,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196631129] [2021-06-12 17:40:15,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196631129] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:15,091 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076220413] [2021-06-12 17:40:15,091 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 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 [2021-06-12 17:40:15,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 17:40:15,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 17:40:15,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-12 17:40:15,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 17:40:15,347 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-06-12 17:40:15,347 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076220413] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:15,347 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 17:40:15,347 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-06-12 17:40:15,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170068068] [2021-06-12 17:40:15,348 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:40:15,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:40:15,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:40:15,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:40:15,349 INFO L87 Difference]: Start difference. First operand 474 states and 906 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 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) [2021-06-12 17:40:15,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:40:15,379 INFO L93 Difference]: Finished difference Result 666 states and 1290 transitions. [2021-06-12 17:40:15,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-12 17:40:15,380 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 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 82 [2021-06-12 17:40:15,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:40:15,382 INFO L225 Difference]: With dead ends: 666 [2021-06-12 17:40:15,382 INFO L226 Difference]: Without dead ends: 666 [2021-06-12 17:40:15,383 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 26.3ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-06-12 17:40:15,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-06-12 17:40:15,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 594. [2021-06-12 17:40:15,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 593 states have (on average 1.9325463743676223) internal successors, (1146), 593 states have internal predecessors, (1146), 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) [2021-06-12 17:40:15,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 1146 transitions. [2021-06-12 17:40:15,413 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 1146 transitions. Word has length 82 [2021-06-12 17:40:15,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:40:15,415 INFO L482 AbstractCegarLoop]: Abstraction has 594 states and 1146 transitions. [2021-06-12 17:40:15,415 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 7 states have internal predecessors, (79), 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) [2021-06-12 17:40:15,415 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 1146 transitions. [2021-06-12 17:40:15,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-06-12 17:40:15,417 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:40:15,417 INFO L472 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:40:15,633 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 17:40:15,633 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:40:15,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:40:15,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1555101393, now seen corresponding path program 3 times [2021-06-12 17:40:15,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:40:15,634 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832328023] [2021-06-12 17:40:15,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:40:15,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:40:15,716 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-06-12 17:40:15,718 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:40:15,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832328023] [2021-06-12 17:40:15,718 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832328023] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:15,718 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547910934] [2021-06-12 17:40:15,718 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 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 [2021-06-12 17:40:15,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-12 17:40:15,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 17:40:15,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 6 conjunts are in the unsatisfiable core [2021-06-12 17:40:15,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 17:40:16,047 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-06-12 17:40:16,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547910934] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:16,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 17:40:16,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-06-12 17:40:16,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270316260] [2021-06-12 17:40:16,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-12 17:40:16,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:40:16,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-12 17:40:16,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-06-12 17:40:16,050 INFO L87 Difference]: Start difference. First operand 594 states and 1146 transitions. Second operand has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 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) [2021-06-12 17:40:16,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:40:16,804 INFO L93 Difference]: Finished difference Result 1220 states and 2398 transitions. [2021-06-12 17:40:16,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-12 17:40:16,805 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 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 87 [2021-06-12 17:40:16,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:40:16,808 INFO L225 Difference]: With dead ends: 1220 [2021-06-12 17:40:16,808 INFO L226 Difference]: Without dead ends: 1220 [2021-06-12 17:40:16,810 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1680 ImplicationChecksByTransitivity, 592.6ms TimeCoverageRelationStatistics Valid=1130, Invalid=3562, Unknown=0, NotChecked=0, Total=4692 [2021-06-12 17:40:16,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2021-06-12 17:40:16,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 938. [2021-06-12 17:40:16,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 937 states have (on average 1.9573105656350054) internal successors, (1834), 937 states have internal predecessors, (1834), 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) [2021-06-12 17:40:16,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1834 transitions. [2021-06-12 17:40:16,827 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1834 transitions. Word has length 87 [2021-06-12 17:40:16,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:40:16,827 INFO L482 AbstractCegarLoop]: Abstraction has 938 states and 1834 transitions. [2021-06-12 17:40:16,827 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 12 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) [2021-06-12 17:40:16,827 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1834 transitions. [2021-06-12 17:40:16,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-06-12 17:40:16,832 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:40:16,832 INFO L472 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1] [2021-06-12 17:40:17,040 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 17:40:17,041 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:40:17,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:40:17,041 INFO L82 PathProgramCache]: Analyzing trace with hash 1825972753, now seen corresponding path program 4 times [2021-06-12 17:40:17,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:40:17,042 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976542834] [2021-06-12 17:40:17,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:40:17,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:40:17,136 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-06-12 17:40:17,137 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:40:17,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976542834] [2021-06-12 17:40:17,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976542834] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:17,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067738586] [2021-06-12 17:40:17,139 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 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 [2021-06-12 17:40:17,226 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-12 17:40:17,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 17:40:17,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-12 17:40:17,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 17:40:17,364 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-06-12 17:40:17,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067738586] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:17,364 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 17:40:17,365 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2021-06-12 17:40:17,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531121958] [2021-06-12 17:40:17,365 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-12 17:40:17,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:40:17,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-12 17:40:17,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:40:17,366 INFO L87 Difference]: Start difference. First operand 938 states and 1834 transitions. Second operand has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 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) [2021-06-12 17:40:17,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:40:17,434 INFO L93 Difference]: Finished difference Result 1330 states and 2618 transitions. [2021-06-12 17:40:17,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-12 17:40:17,434 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 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 100 [2021-06-12 17:40:17,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:40:17,438 INFO L225 Difference]: With dead ends: 1330 [2021-06-12 17:40:17,438 INFO L226 Difference]: Without dead ends: 1330 [2021-06-12 17:40:17,438 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 71.7ms TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-06-12 17:40:17,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2021-06-12 17:40:17,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1162. [2021-06-12 17:40:17,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 1161 states have (on average 1.9655469422911283) internal successors, (2282), 1161 states have internal predecessors, (2282), 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) [2021-06-12 17:40:17,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 2282 transitions. [2021-06-12 17:40:17,456 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 2282 transitions. Word has length 100 [2021-06-12 17:40:17,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:40:17,456 INFO L482 AbstractCegarLoop]: Abstraction has 1162 states and 2282 transitions. [2021-06-12 17:40:17,456 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 8.909090909090908) internal successors, (98), 11 states have internal predecessors, (98), 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) [2021-06-12 17:40:17,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 2282 transitions. [2021-06-12 17:40:17,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-06-12 17:40:17,458 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:40:17,458 INFO L472 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:40:17,673 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-06-12 17:40:17,673 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:40:17,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:40:17,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1895625940, now seen corresponding path program 5 times [2021-06-12 17:40:17,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:40:17,673 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594756845] [2021-06-12 17:40:17,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:40:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:40:17,828 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-06-12 17:40:17,828 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:40:17,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594756845] [2021-06-12 17:40:17,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594756845] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:17,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230754826] [2021-06-12 17:40:17,828 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 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 [2021-06-12 17:40:17,907 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-06-12 17:40:17,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 17:40:17,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-12 17:40:17,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 17:40:18,152 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-06-12 17:40:18,153 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230754826] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:18,153 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 17:40:18,153 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2021-06-12 17:40:18,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589207043] [2021-06-12 17:40:18,154 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-12 17:40:18,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:40:18,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-12 17:40:18,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2021-06-12 17:40:18,154 INFO L87 Difference]: Start difference. First operand 1162 states and 2282 transitions. Second operand has 18 states, 18 states have (on average 7.5) internal successors, (135), 18 states have internal predecessors, (135), 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) [2021-06-12 17:40:20,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:40:20,546 INFO L93 Difference]: Finished difference Result 1986 states and 3930 transitions. [2021-06-12 17:40:20,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2021-06-12 17:40:20,547 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 7.5) internal successors, (135), 18 states have internal predecessors, (135), 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 108 [2021-06-12 17:40:20,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:40:20,552 INFO L225 Difference]: With dead ends: 1986 [2021-06-12 17:40:20,552 INFO L226 Difference]: Without dead ends: 1986 [2021-06-12 17:40:20,558 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 246 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11192 ImplicationChecksByTransitivity, 2138.1ms TimeCoverageRelationStatistics Valid=5484, Invalid=20598, Unknown=0, NotChecked=0, Total=26082 [2021-06-12 17:40:20,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1986 states. [2021-06-12 17:40:20,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1986 to 1626. [2021-06-12 17:40:20,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1626 states, 1625 states have (on average 1.9753846153846153) internal successors, (3210), 1625 states have internal predecessors, (3210), 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) [2021-06-12 17:40:20,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1626 states to 1626 states and 3210 transitions. [2021-06-12 17:40:20,583 INFO L78 Accepts]: Start accepts. Automaton has 1626 states and 3210 transitions. Word has length 108 [2021-06-12 17:40:20,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:40:20,583 INFO L482 AbstractCegarLoop]: Abstraction has 1626 states and 3210 transitions. [2021-06-12 17:40:20,584 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 7.5) internal successors, (135), 18 states have internal predecessors, (135), 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) [2021-06-12 17:40:20,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1626 states and 3210 transitions. [2021-06-12 17:40:20,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-06-12 17:40:20,586 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:40:20,586 INFO L472 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:40:20,799 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 17:40:20,799 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:40:20,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:40:20,800 INFO L82 PathProgramCache]: Analyzing trace with hash -53848768, now seen corresponding path program 6 times [2021-06-12 17:40:20,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:40:20,800 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253377636] [2021-06-12 17:40:20,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:40:20,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:40:20,914 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 17:40:20,914 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:40:20,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253377636] [2021-06-12 17:40:20,915 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253377636] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:20,915 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534055929] [2021-06-12 17:40:20,915 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 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 [2021-06-12 17:40:21,044 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-12 17:40:21,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 17:40:21,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-12 17:40:21,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 17:40:21,234 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 17:40:21,235 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534055929] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:21,235 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 17:40:21,235 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2021-06-12 17:40:21,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894436982] [2021-06-12 17:40:21,237 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-12 17:40:21,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:40:21,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-12 17:40:21,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-06-12 17:40:21,238 INFO L87 Difference]: Start difference. First operand 1626 states and 3210 transitions. Second operand has 15 states, 15 states have (on average 7.6) internal successors, (114), 15 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) [2021-06-12 17:40:21,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:40:21,350 INFO L93 Difference]: Finished difference Result 2088 states and 4134 transitions. [2021-06-12 17:40:21,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-12 17:40:21,350 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.6) internal successors, (114), 15 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 121 [2021-06-12 17:40:21,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:40:21,356 INFO L225 Difference]: With dead ends: 2088 [2021-06-12 17:40:21,356 INFO L226 Difference]: Without dead ends: 2088 [2021-06-12 17:40:21,356 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 129.1ms TimeCoverageRelationStatistics Valid=196, Invalid=404, Unknown=0, NotChecked=0, Total=600 [2021-06-12 17:40:21,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2021-06-12 17:40:21,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 1890. [2021-06-12 17:40:21,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1890 states, 1889 states have (on average 1.9788247750132346) internal successors, (3738), 1889 states have internal predecessors, (3738), 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) [2021-06-12 17:40:21,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1890 states to 1890 states and 3738 transitions. [2021-06-12 17:40:21,384 INFO L78 Accepts]: Start accepts. Automaton has 1890 states and 3738 transitions. Word has length 121 [2021-06-12 17:40:21,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:40:21,384 INFO L482 AbstractCegarLoop]: Abstraction has 1890 states and 3738 transitions. [2021-06-12 17:40:21,385 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 7.6) internal successors, (114), 15 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) [2021-06-12 17:40:21,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1890 states and 3738 transitions. [2021-06-12 17:40:21,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-06-12 17:40:21,388 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:40:21,388 INFO L472 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:40:21,609 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 17:40:21,609 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:40:21,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:40:21,610 INFO L82 PathProgramCache]: Analyzing trace with hash 353614597, now seen corresponding path program 7 times [2021-06-12 17:40:21,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:40:21,610 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860650903] [2021-06-12 17:40:21,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:40:21,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:40:21,711 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 17:40:21,712 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:40:21,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860650903] [2021-06-12 17:40:21,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860650903] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:21,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901169190] [2021-06-12 17:40:21,712 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2021-06-12 17:40:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:40:21,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-12 17:40:21,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 17:40:21,974 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 17:40:21,974 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901169190] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:21,974 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 17:40:21,974 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2021-06-12 17:40:21,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856698237] [2021-06-12 17:40:21,975 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-12 17:40:21,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:40:21,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-12 17:40:21,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-06-12 17:40:21,976 INFO L87 Difference]: Start difference. First operand 1890 states and 3738 transitions. Second operand has 17 states, 17 states have (on average 7.176470588235294) internal successors, (122), 17 states have internal predecessors, (122), 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) [2021-06-12 17:40:22,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:40:22,112 INFO L93 Difference]: Finished difference Result 2352 states and 4662 transitions. [2021-06-12 17:40:22,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-12 17:40:22,112 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.176470588235294) internal successors, (122), 17 states have internal predecessors, (122), 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 129 [2021-06-12 17:40:22,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:40:22,118 INFO L225 Difference]: With dead ends: 2352 [2021-06-12 17:40:22,118 INFO L226 Difference]: Without dead ends: 2352 [2021-06-12 17:40:22,119 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 164.6ms TimeCoverageRelationStatistics Valid=263, Invalid=549, Unknown=0, NotChecked=0, Total=812 [2021-06-12 17:40:22,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2352 states. [2021-06-12 17:40:22,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2352 to 2154. [2021-06-12 17:40:22,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2154 states, 2153 states have (on average 1.981421272642824) internal successors, (4266), 2153 states have internal predecessors, (4266), 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) [2021-06-12 17:40:22,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2154 states to 2154 states and 4266 transitions. [2021-06-12 17:40:22,150 INFO L78 Accepts]: Start accepts. Automaton has 2154 states and 4266 transitions. Word has length 129 [2021-06-12 17:40:22,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:40:22,151 INFO L482 AbstractCegarLoop]: Abstraction has 2154 states and 4266 transitions. [2021-06-12 17:40:22,151 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 7.176470588235294) internal successors, (122), 17 states have internal predecessors, (122), 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) [2021-06-12 17:40:22,151 INFO L276 IsEmpty]: Start isEmpty. Operand 2154 states and 4266 transitions. [2021-06-12 17:40:22,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-06-12 17:40:22,155 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:40:22,156 INFO L472 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:40:22,369 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-06-12 17:40:22,369 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:40:22,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:40:22,370 INFO L82 PathProgramCache]: Analyzing trace with hash -321811510, now seen corresponding path program 8 times [2021-06-12 17:40:22,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:40:22,370 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381307599] [2021-06-12 17:40:22,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:40:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:40:22,503 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 17:40:22,503 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:40:22,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381307599] [2021-06-12 17:40:22,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381307599] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:22,503 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489629329] [2021-06-12 17:40:22,503 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 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 [2021-06-12 17:40:22,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 17:40:22,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 17:40:22,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-12 17:40:22,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 17:40:22,791 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 0 proven. 175 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 17:40:22,791 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489629329] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:22,791 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 17:40:22,791 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2021-06-12 17:40:22,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118440607] [2021-06-12 17:40:22,792 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-12 17:40:22,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:40:22,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-12 17:40:22,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-06-12 17:40:22,792 INFO L87 Difference]: Start difference. First operand 2154 states and 4266 transitions. Second operand has 19 states, 19 states have (on average 6.842105263157895) internal successors, (130), 19 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:40:22,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:40:22,956 INFO L93 Difference]: Finished difference Result 2616 states and 5190 transitions. [2021-06-12 17:40:22,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-12 17:40:22,956 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 6.842105263157895) internal successors, (130), 19 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 137 [2021-06-12 17:40:22,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:40:22,963 INFO L225 Difference]: With dead ends: 2616 [2021-06-12 17:40:22,963 INFO L226 Difference]: Without dead ends: 2616 [2021-06-12 17:40:22,963 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 186.6ms TimeCoverageRelationStatistics Valid=340, Invalid=716, Unknown=0, NotChecked=0, Total=1056 [2021-06-12 17:40:22,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2616 states. [2021-06-12 17:40:22,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2616 to 2418. [2021-06-12 17:40:22,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2418 states, 2417 states have (on average 1.983450558543649) internal successors, (4794), 2417 states have internal predecessors, (4794), 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) [2021-06-12 17:40:22,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2418 states to 2418 states and 4794 transitions. [2021-06-12 17:40:22,995 INFO L78 Accepts]: Start accepts. Automaton has 2418 states and 4794 transitions. Word has length 137 [2021-06-12 17:40:22,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:40:22,995 INFO L482 AbstractCegarLoop]: Abstraction has 2418 states and 4794 transitions. [2021-06-12 17:40:22,995 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 6.842105263157895) internal successors, (130), 19 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-12 17:40:22,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2418 states and 4794 transitions. [2021-06-12 17:40:22,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-06-12 17:40:22,998 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:40:22,999 INFO L472 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:40:23,217 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 17:40:23,218 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:40:23,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:40:23,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1785251727, now seen corresponding path program 9 times [2021-06-12 17:40:23,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:40:23,218 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150048904] [2021-06-12 17:40:23,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:40:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:40:23,350 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 232 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-06-12 17:40:23,350 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:40:23,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150048904] [2021-06-12 17:40:23,350 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150048904] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:23,350 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752031928] [2021-06-12 17:40:23,350 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 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 [2021-06-12 17:40:23,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-12 17:40:23,448 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 17:40:23,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-12 17:40:23,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 17:40:23,722 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-06-12 17:40:23,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752031928] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:23,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 17:40:23,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11] total 28 [2021-06-12 17:40:23,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633643153] [2021-06-12 17:40:23,723 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-06-12 17:40:23,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:40:23,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-06-12 17:40:23,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=623, Unknown=0, NotChecked=0, Total=756 [2021-06-12 17:40:23,723 INFO L87 Difference]: Start difference. First operand 2418 states and 4794 transitions. Second operand has 28 states, 28 states have (on average 6.142857142857143) internal successors, (172), 28 states have internal predecessors, (172), 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) [2021-06-12 17:40:33,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:40:33,077 INFO L93 Difference]: Finished difference Result 3568 states and 7094 transitions. [2021-06-12 17:40:33,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 365 states. [2021-06-12 17:40:33,077 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 6.142857142857143) internal successors, (172), 28 states have internal predecessors, (172), 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 145 [2021-06-12 17:40:33,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:40:33,086 INFO L225 Difference]: With dead ends: 3568 [2021-06-12 17:40:33,086 INFO L226 Difference]: Without dead ends: 3568 [2021-06-12 17:40:33,095 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 861 GetRequests, 486 SyntacticMatches, 0 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66931 ImplicationChecksByTransitivity, 8741.8ms TimeCoverageRelationStatistics Valid=27129, Invalid=114623, Unknown=0, NotChecked=0, Total=141752 [2021-06-12 17:40:33,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3568 states. [2021-06-12 17:40:33,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3568 to 3082. [2021-06-12 17:40:33,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3082 states, 3081 states have (on average 1.9870172022070756) internal successors, (6122), 3081 states have internal predecessors, (6122), 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) [2021-06-12 17:40:33,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3082 states to 3082 states and 6122 transitions. [2021-06-12 17:40:33,129 INFO L78 Accepts]: Start accepts. Automaton has 3082 states and 6122 transitions. Word has length 145 [2021-06-12 17:40:33,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:40:33,130 INFO L482 AbstractCegarLoop]: Abstraction has 3082 states and 6122 transitions. [2021-06-12 17:40:33,130 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 6.142857142857143) internal successors, (172), 28 states have internal predecessors, (172), 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) [2021-06-12 17:40:33,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3082 states and 6122 transitions. [2021-06-12 17:40:33,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-06-12 17:40:33,134 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:40:33,134 INFO L472 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:40:33,348 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 17:40:33,352 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:40:33,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:40:33,352 INFO L82 PathProgramCache]: Analyzing trace with hash -113463213, now seen corresponding path program 10 times [2021-06-12 17:40:33,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:40:33,353 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047179307] [2021-06-12 17:40:33,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:40:33,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:40:33,499 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-06-12 17:40:33,499 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:40:33,499 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047179307] [2021-06-12 17:40:33,499 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047179307] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:33,500 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2014538146] [2021-06-12 17:40:33,500 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 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 [2021-06-12 17:40:33,581 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-12 17:40:33,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 17:40:33,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 20 conjunts are in the unsatisfiable core [2021-06-12 17:40:33,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 17:40:33,795 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-06-12 17:40:33,795 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2014538146] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:33,795 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 17:40:33,795 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2021-06-12 17:40:33,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137603490] [2021-06-12 17:40:33,797 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-12 17:40:33,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:40:33,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-12 17:40:33,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2021-06-12 17:40:33,797 INFO L87 Difference]: Start difference. First operand 3082 states and 6122 transitions. Second operand has 23 states, 23 states have (on average 6.3478260869565215) internal successors, (146), 23 states have internal predecessors, (146), 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) [2021-06-12 17:40:34,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:40:34,049 INFO L93 Difference]: Finished difference Result 3614 states and 7186 transitions. [2021-06-12 17:40:34,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-06-12 17:40:34,049 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.3478260869565215) internal successors, (146), 23 states have internal predecessors, (146), 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 [2021-06-12 17:40:34,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:40:34,057 INFO L225 Difference]: With dead ends: 3614 [2021-06-12 17:40:34,057 INFO L226 Difference]: Without dead ends: 3614 [2021-06-12 17:40:34,057 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 302.2ms TimeCoverageRelationStatistics Valid=524, Invalid=1116, Unknown=0, NotChecked=0, Total=1640 [2021-06-12 17:40:34,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3614 states. [2021-06-12 17:40:34,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3614 to 3386. [2021-06-12 17:40:34,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3386 states, 3385 states have (on average 1.9881831610044314) internal successors, (6730), 3385 states have internal predecessors, (6730), 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) [2021-06-12 17:40:34,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 6730 transitions. [2021-06-12 17:40:34,095 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 6730 transitions. Word has length 158 [2021-06-12 17:40:34,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:40:34,095 INFO L482 AbstractCegarLoop]: Abstraction has 3386 states and 6730 transitions. [2021-06-12 17:40:34,095 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 6.3478260869565215) internal successors, (146), 23 states have internal predecessors, (146), 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) [2021-06-12 17:40:34,095 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 6730 transitions. [2021-06-12 17:40:34,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-06-12 17:40:34,100 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:40:34,100 INFO L472 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:40:34,317 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-06-12 17:40:34,317 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:40:34,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:40:34,317 INFO L82 PathProgramCache]: Analyzing trace with hash 116453806, now seen corresponding path program 11 times [2021-06-12 17:40:34,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:40:34,317 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610902037] [2021-06-12 17:40:34,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:40:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:40:34,483 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 370 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-06-12 17:40:34,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:40:34,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610902037] [2021-06-12 17:40:34,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610902037] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:34,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462997457] [2021-06-12 17:40:34,483 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 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 [2021-06-12 17:40:34,568 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-06-12 17:40:34,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 17:40:34,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-12 17:40:34,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 17:40:34,810 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 370 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-06-12 17:40:34,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462997457] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:34,810 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 17:40:34,810 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2021-06-12 17:40:34,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766230582] [2021-06-12 17:40:34,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-12 17:40:34,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:40:34,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-12 17:40:34,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2021-06-12 17:40:34,812 INFO L87 Difference]: Start difference. First operand 3386 states and 6730 transitions. Second operand has 25 states, 25 states have (on average 6.16) internal successors, (154), 25 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) [2021-06-12 17:40:35,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:40:35,130 INFO L93 Difference]: Finished difference Result 3918 states and 7794 transitions. [2021-06-12 17:40:35,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-06-12 17:40:35,130 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.16) internal successors, (154), 25 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 166 [2021-06-12 17:40:35,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:40:35,139 INFO L225 Difference]: With dead ends: 3918 [2021-06-12 17:40:35,139 INFO L226 Difference]: Without dead ends: 3918 [2021-06-12 17:40:35,140 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 333.4ms TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2021-06-12 17:40:35,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3918 states. [2021-06-12 17:40:35,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3918 to 3690. [2021-06-12 17:40:35,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3690 states, 3689 states have (on average 1.9891569531038222) internal successors, (7338), 3689 states have internal predecessors, (7338), 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) [2021-06-12 17:40:35,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3690 states to 3690 states and 7338 transitions. [2021-06-12 17:40:35,178 INFO L78 Accepts]: Start accepts. Automaton has 3690 states and 7338 transitions. Word has length 166 [2021-06-12 17:40:35,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:40:35,178 INFO L482 AbstractCegarLoop]: Abstraction has 3690 states and 7338 transitions. [2021-06-12 17:40:35,179 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 6.16) internal successors, (154), 25 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) [2021-06-12 17:40:35,179 INFO L276 IsEmpty]: Start isEmpty. Operand 3690 states and 7338 transitions. [2021-06-12 17:40:35,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-06-12 17:40:35,221 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:40:35,221 INFO L472 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:40:35,422 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-06-12 17:40:35,422 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:40:35,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:40:35,422 INFO L82 PathProgramCache]: Analyzing trace with hash 891791369, now seen corresponding path program 12 times [2021-06-12 17:40:35,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:40:35,422 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891080550] [2021-06-12 17:40:35,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:40:35,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:40:35,617 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 451 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-06-12 17:40:35,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:40:35,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891080550] [2021-06-12 17:40:35,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891080550] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:35,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550692588] [2021-06-12 17:40:35,618 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 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 [2021-06-12 17:40:35,794 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-06-12 17:40:35,794 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 17:40:35,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 12 conjunts are in the unsatisfiable core [2021-06-12 17:40:35,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 17:40:36,070 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2021-06-12 17:40:36,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550692588] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:36,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 17:40:36,071 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 13] total 36 [2021-06-12 17:40:36,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928717742] [2021-06-12 17:40:36,071 INFO L462 AbstractCegarLoop]: Interpolant automaton has 36 states [2021-06-12 17:40:36,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:40:36,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-06-12 17:40:36,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=215, Invalid=1045, Unknown=0, NotChecked=0, Total=1260 [2021-06-12 17:40:36,072 INFO L87 Difference]: Start difference. First operand 3690 states and 7338 transitions. Second operand has 36 states, 36 states have (on average 5.583333333333333) internal successors, (201), 36 states have internal predecessors, (201), 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) [2021-06-12 17:40:58,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:40:58,032 INFO L93 Difference]: Finished difference Result 5102 states and 10162 transitions. [2021-06-12 17:40:58,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 596 states. [2021-06-12 17:40:58,033 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.583333333333333) internal successors, (201), 36 states have internal predecessors, (201), 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 174 [2021-06-12 17:40:58,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:40:58,040 INFO L225 Difference]: With dead ends: 5102 [2021-06-12 17:40:58,040 INFO L226 Difference]: Without dead ends: 5102 [2021-06-12 17:40:58,054 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 1350 GetRequests, 740 SyntacticMatches, 0 SemanticMatches, 610 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182683 ImplicationChecksByTransitivity, 21014.7ms TimeCoverageRelationStatistics Valid=68543, Invalid=305389, Unknown=0, NotChecked=0, Total=373932 [2021-06-12 17:40:58,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5102 states. [2021-06-12 17:40:58,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5102 to 4514. [2021-06-12 17:40:58,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4514 states, 4513 states have (on average 1.9911367161533349) internal successors, (8986), 4513 states have internal predecessors, (8986), 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) [2021-06-12 17:40:58,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4514 states to 4514 states and 8986 transitions. [2021-06-12 17:40:58,103 INFO L78 Accepts]: Start accepts. Automaton has 4514 states and 8986 transitions. Word has length 174 [2021-06-12 17:40:58,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:40:58,104 INFO L482 AbstractCegarLoop]: Abstraction has 4514 states and 8986 transitions. [2021-06-12 17:40:58,104 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 36 states, 36 states have (on average 5.583333333333333) internal successors, (201), 36 states have internal predecessors, (201), 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) [2021-06-12 17:40:58,104 INFO L276 IsEmpty]: Start isEmpty. Operand 4514 states and 8986 transitions. [2021-06-12 17:40:58,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-06-12 17:40:58,110 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:40:58,110 INFO L472 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:40:58,325 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-06-12 17:40:58,325 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:40:58,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:40:58,325 INFO L82 PathProgramCache]: Analyzing trace with hash -691800765, now seen corresponding path program 13 times [2021-06-12 17:40:58,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:40:58,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486843621] [2021-06-12 17:40:58,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:40:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:40:58,618 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-06-12 17:40:58,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:40:58,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486843621] [2021-06-12 17:40:58,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486843621] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:58,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430495241] [2021-06-12 17:40:58,619 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 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 [2021-06-12 17:40:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:40:58,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 26 conjunts are in the unsatisfiable core [2021-06-12 17:40:58,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 17:40:58,929 INFO L134 CoverageAnalysis]: Checked inductivity of 621 backedges. 0 proven. 540 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-06-12 17:40:58,929 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430495241] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:58,929 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 17:40:58,929 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2021-06-12 17:40:58,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23164237] [2021-06-12 17:40:58,930 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-06-12 17:40:58,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:40:58,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-06-12 17:40:58,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2021-06-12 17:40:58,930 INFO L87 Difference]: Start difference. First operand 4514 states and 8986 transitions. Second operand has 29 states, 29 states have (on average 5.862068965517241) internal successors, (170), 29 states have internal predecessors, (170), 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) [2021-06-12 17:40:59,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:40:59,314 INFO L93 Difference]: Finished difference Result 5116 states and 10190 transitions. [2021-06-12 17:40:59,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-06-12 17:40:59,314 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.862068965517241) internal successors, (170), 29 states have internal predecessors, (170), 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 187 [2021-06-12 17:40:59,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:40:59,320 INFO L225 Difference]: With dead ends: 5116 [2021-06-12 17:40:59,320 INFO L226 Difference]: Without dead ends: 5116 [2021-06-12 17:40:59,321 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 499.8ms TimeCoverageRelationStatistics Valid=875, Invalid=1881, Unknown=0, NotChecked=0, Total=2756 [2021-06-12 17:40:59,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5116 states. [2021-06-12 17:40:59,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5116 to 4858. [2021-06-12 17:40:59,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4858 states, 4857 states have (on average 1.991764463660696) internal successors, (9674), 4857 states have internal predecessors, (9674), 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) [2021-06-12 17:40:59,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4858 states to 4858 states and 9674 transitions. [2021-06-12 17:40:59,367 INFO L78 Accepts]: Start accepts. Automaton has 4858 states and 9674 transitions. Word has length 187 [2021-06-12 17:40:59,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:40:59,367 INFO L482 AbstractCegarLoop]: Abstraction has 4858 states and 9674 transitions. [2021-06-12 17:40:59,367 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 5.862068965517241) internal successors, (170), 29 states have internal predecessors, (170), 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) [2021-06-12 17:40:59,367 INFO L276 IsEmpty]: Start isEmpty. Operand 4858 states and 9674 transitions. [2021-06-12 17:40:59,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-06-12 17:40:59,377 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:40:59,377 INFO L472 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:40:59,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 17:40:59,593 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:40:59,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:40:59,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1434167864, now seen corresponding path program 14 times [2021-06-12 17:40:59,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:40:59,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644900273] [2021-06-12 17:40:59,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:40:59,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:40:59,860 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 0 proven. 637 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-06-12 17:40:59,860 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:40:59,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644900273] [2021-06-12 17:40:59,860 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644900273] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:40:59,860 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998146687] [2021-06-12 17:40:59,860 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 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 [2021-06-12 17:40:59,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 17:40:59,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 17:40:59,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 28 conjunts are in the unsatisfiable core [2021-06-12 17:40:59,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 17:41:00,205 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 0 proven. 637 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-06-12 17:41:00,205 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998146687] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:41:00,205 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 17:41:00,205 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2021-06-12 17:41:00,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225931882] [2021-06-12 17:41:00,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-06-12 17:41:00,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:41:00,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-06-12 17:41:00,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2021-06-12 17:41:00,206 INFO L87 Difference]: Start difference. First operand 4858 states and 9674 transitions. Second operand has 31 states, 31 states have (on average 5.741935483870968) internal successors, (178), 31 states have internal predecessors, (178), 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) [2021-06-12 17:41:00,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:41:00,717 INFO L93 Difference]: Finished difference Result 5460 states and 10878 transitions. [2021-06-12 17:41:00,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-12 17:41:00,717 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.741935483870968) internal successors, (178), 31 states have internal predecessors, (178), 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 195 [2021-06-12 17:41:00,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:41:00,723 INFO L225 Difference]: With dead ends: 5460 [2021-06-12 17:41:00,723 INFO L226 Difference]: Without dead ends: 5460 [2021-06-12 17:41:00,723 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 582.2ms TimeCoverageRelationStatistics Valid=1012, Invalid=2180, Unknown=0, NotChecked=0, Total=3192 [2021-06-12 17:41:00,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2021-06-12 17:41:00,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 5202. [2021-06-12 17:41:00,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5202 states, 5201 states have (on average 1.992309171313209) internal successors, (10362), 5201 states have internal predecessors, (10362), 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) [2021-06-12 17:41:00,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5202 states to 5202 states and 10362 transitions. [2021-06-12 17:41:00,769 INFO L78 Accepts]: Start accepts. Automaton has 5202 states and 10362 transitions. Word has length 195 [2021-06-12 17:41:00,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:41:00,769 INFO L482 AbstractCegarLoop]: Abstraction has 5202 states and 10362 transitions. [2021-06-12 17:41:00,769 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 5.741935483870968) internal successors, (178), 31 states have internal predecessors, (178), 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) [2021-06-12 17:41:00,769 INFO L276 IsEmpty]: Start isEmpty. Operand 5202 states and 10362 transitions. [2021-06-12 17:41:00,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2021-06-12 17:41:00,775 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:41:00,775 INFO L472 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:41:00,989 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-06-12 17:41:00,989 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:41:00,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:41:00,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1869766989, now seen corresponding path program 15 times [2021-06-12 17:41:00,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:41:00,990 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407106581] [2021-06-12 17:41:00,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:41:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:41:01,292 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 0 proven. 742 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-06-12 17:41:01,292 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:41:01,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407106581] [2021-06-12 17:41:01,292 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407106581] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:41:01,292 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616146118] [2021-06-12 17:41:01,292 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 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 [2021-06-12 17:41:01,386 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-06-12 17:41:01,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 17:41:01,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-12 17:41:01,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 17:41:01,766 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 742 trivial. 0 not checked. [2021-06-12 17:41:01,766 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616146118] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:41:01,766 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 17:41:01,766 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 15] total 44 [2021-06-12 17:41:01,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485310987] [2021-06-12 17:41:01,767 INFO L462 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-06-12 17:41:01,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:41:01,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-06-12 17:41:01,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1575, Unknown=0, NotChecked=0, Total=1892 [2021-06-12 17:41:01,767 INFO L87 Difference]: Start difference. First operand 5202 states and 10362 transitions. Second operand has 44 states, 44 states have (on average 5.2272727272727275) internal successors, (230), 44 states have internal predecessors, (230), 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) [2021-06-12 17:41:45,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:41:45,736 INFO L93 Difference]: Finished difference Result 6876 states and 13710 transitions. [2021-06-12 17:41:45,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 881 states. [2021-06-12 17:41:45,737 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 5.2272727272727275) internal successors, (230), 44 states have internal predecessors, (230), 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 203 [2021-06-12 17:41:45,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:41:45,742 INFO L225 Difference]: With dead ends: 6876 [2021-06-12 17:41:45,742 INFO L226 Difference]: Without dead ends: 6876 [2021-06-12 17:41:45,773 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 1947 GetRequests, 1048 SyntacticMatches, 0 SemanticMatches, 899 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404372 ImplicationChecksByTransitivity, 42293.8ms TimeCoverageRelationStatistics Valid=144350, Invalid=666550, Unknown=0, NotChecked=0, Total=810900 [2021-06-12 17:41:45,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6876 states. [2021-06-12 17:41:45,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6876 to 6186. [2021-06-12 17:41:45,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6186 states, 6185 states have (on average 1.9935327405012127) internal successors, (12330), 6185 states have internal predecessors, (12330), 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) [2021-06-12 17:41:45,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6186 states to 6186 states and 12330 transitions. [2021-06-12 17:41:45,830 INFO L78 Accepts]: Start accepts. Automaton has 6186 states and 12330 transitions. Word has length 203 [2021-06-12 17:41:45,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:41:45,830 INFO L482 AbstractCegarLoop]: Abstraction has 6186 states and 12330 transitions. [2021-06-12 17:41:45,830 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 5.2272727272727275) internal successors, (230), 44 states have internal predecessors, (230), 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) [2021-06-12 17:41:45,830 INFO L276 IsEmpty]: Start isEmpty. Operand 6186 states and 12330 transitions. [2021-06-12 17:41:45,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-06-12 17:41:45,838 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:41:45,838 INFO L472 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:41:46,052 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-06-12 17:41:46,053 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:41:46,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:41:46,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1672723051, now seen corresponding path program 16 times [2021-06-12 17:41:46,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:41:46,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17289581] [2021-06-12 17:41:46,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:41:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:41:46,448 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 0 proven. 855 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-06-12 17:41:46,449 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:41:46,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17289581] [2021-06-12 17:41:46,449 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17289581] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:41:46,449 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704416081] [2021-06-12 17:41:46,449 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 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 [2021-06-12 17:41:46,576 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-12 17:41:46,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 17:41:46,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 32 conjunts are in the unsatisfiable core [2021-06-12 17:41:46,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 17:41:46,842 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 0 proven. 855 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-06-12 17:41:46,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704416081] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:41:46,843 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 17:41:46,843 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2021-06-12 17:41:46,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942731546] [2021-06-12 17:41:46,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-12 17:41:46,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:41:46,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-12 17:41:46,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2021-06-12 17:41:46,844 INFO L87 Difference]: Start difference. First operand 6186 states and 12330 transitions. Second operand has 35 states, 35 states have (on average 5.542857142857143) internal successors, (194), 35 states have internal predecessors, (194), 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) [2021-06-12 17:41:47,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:41:47,439 INFO L93 Difference]: Finished difference Result 6858 states and 13674 transitions. [2021-06-12 17:41:47,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-06-12 17:41:47,439 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 5.542857142857143) internal successors, (194), 35 states have internal predecessors, (194), 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 216 [2021-06-12 17:41:47,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:41:47,445 INFO L225 Difference]: With dead ends: 6858 [2021-06-12 17:41:47,445 INFO L226 Difference]: Without dead ends: 6858 [2021-06-12 17:41:47,446 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 763.0ms TimeCoverageRelationStatistics Valid=1316, Invalid=2844, Unknown=0, NotChecked=0, Total=4160 [2021-06-12 17:41:47,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6858 states. [2021-06-12 17:41:47,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6858 to 6570. [2021-06-12 17:41:47,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6570 states, 6569 states have (on average 1.9939107931191962) internal successors, (13098), 6569 states have internal predecessors, (13098), 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) [2021-06-12 17:41:47,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6570 states to 6570 states and 13098 transitions. [2021-06-12 17:41:47,515 INFO L78 Accepts]: Start accepts. Automaton has 6570 states and 13098 transitions. Word has length 216 [2021-06-12 17:41:47,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:41:47,515 INFO L482 AbstractCegarLoop]: Abstraction has 6570 states and 13098 transitions. [2021-06-12 17:41:47,515 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 5.542857142857143) internal successors, (194), 35 states have internal predecessors, (194), 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) [2021-06-12 17:41:47,516 INFO L276 IsEmpty]: Start isEmpty. Operand 6570 states and 13098 transitions. [2021-06-12 17:41:47,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2021-06-12 17:41:47,524 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:41:47,524 INFO L472 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 16, 16, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:41:47,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 17:41:47,742 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:41:47,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:41:47,742 INFO L82 PathProgramCache]: Analyzing trace with hash 2057113392, now seen corresponding path program 17 times [2021-06-12 17:41:47,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:41:47,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959632629] [2021-06-12 17:41:47,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:41:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:41:48,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 0 proven. 976 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-06-12 17:41:48,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:41:48,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959632629] [2021-06-12 17:41:48,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959632629] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:41:48,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517538756] [2021-06-12 17:41:48,102 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 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 [2021-06-12 17:41:48,197 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 17 check-sat command(s) [2021-06-12 17:41:48,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 17:41:48,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 34 conjunts are in the unsatisfiable core [2021-06-12 17:41:48,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 17:41:48,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1088 backedges. 0 proven. 976 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-06-12 17:41:48,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517538756] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:41:48,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 17:41:48,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2021-06-12 17:41:48,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730417196] [2021-06-12 17:41:48,447 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-06-12 17:41:48,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:41:48,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-06-12 17:41:48,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2021-06-12 17:41:48,448 INFO L87 Difference]: Start difference. First operand 6570 states and 13098 transitions. Second operand has 37 states, 37 states have (on average 5.45945945945946) internal successors, (202), 37 states have internal predecessors, (202), 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) [2021-06-12 17:41:49,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:41:49,083 INFO L93 Difference]: Finished difference Result 7242 states and 14442 transitions. [2021-06-12 17:41:49,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-06-12 17:41:49,084 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 5.45945945945946) internal successors, (202), 37 states have internal predecessors, (202), 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 224 [2021-06-12 17:41:49,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:41:49,089 INFO L225 Difference]: With dead ends: 7242 [2021-06-12 17:41:49,089 INFO L226 Difference]: Without dead ends: 7242 [2021-06-12 17:41:49,089 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 748.3ms TimeCoverageRelationStatistics Valid=1483, Invalid=3209, Unknown=0, NotChecked=0, Total=4692 [2021-06-12 17:41:49,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7242 states. [2021-06-12 17:41:49,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7242 to 6954. [2021-06-12 17:41:49,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6954 states, 6953 states have (on average 1.9942470875880915) internal successors, (13866), 6953 states have internal predecessors, (13866), 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) [2021-06-12 17:41:49,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6954 states to 6954 states and 13866 transitions. [2021-06-12 17:41:49,269 INFO L78 Accepts]: Start accepts. Automaton has 6954 states and 13866 transitions. Word has length 224 [2021-06-12 17:41:49,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:41:49,269 INFO L482 AbstractCegarLoop]: Abstraction has 6954 states and 13866 transitions. [2021-06-12 17:41:49,269 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 5.45945945945946) internal successors, (202), 37 states have internal predecessors, (202), 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) [2021-06-12 17:41:49,270 INFO L276 IsEmpty]: Start isEmpty. Operand 6954 states and 13866 transitions. [2021-06-12 17:41:49,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-06-12 17:41:49,282 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:41:49,282 INFO L472 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 17, 17, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:41:49,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 17:41:49,497 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:41:49,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:41:49,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1987834421, now seen corresponding path program 18 times [2021-06-12 17:41:49,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:41:49,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704635046] [2021-06-12 17:41:49,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:41:49,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:41:49,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1217 backedges. 0 proven. 1105 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-06-12 17:41:49,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:41:49,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704635046] [2021-06-12 17:41:49,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704635046] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:41:49,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237278226] [2021-06-12 17:41:49,895 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 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 [2021-06-12 17:41:50,052 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 15 check-sat command(s) [2021-06-12 17:41:50,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 17:41:50,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 16 conjunts are in the unsatisfiable core [2021-06-12 17:41:50,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 17:41:50,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1217 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 1105 trivial. 0 not checked. [2021-06-12 17:41:50,547 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237278226] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:41:50,547 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 17:41:50,547 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 17] total 52 [2021-06-12 17:41:50,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252103208] [2021-06-12 17:41:50,548 INFO L462 AbstractCegarLoop]: Interpolant automaton has 52 states [2021-06-12 17:41:50,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:41:50,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-06-12 17:41:50,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=2213, Unknown=0, NotChecked=0, Total=2652 [2021-06-12 17:41:50,549 INFO L87 Difference]: Start difference. First operand 6954 states and 13866 transitions. Second operand has 52 states, 52 states have (on average 4.980769230769231) internal successors, (259), 52 states have internal predecessors, (259), 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) [2021-06-12 17:43:12,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:43:12,511 INFO L93 Difference]: Finished difference Result 8890 states and 17738 transitions. [2021-06-12 17:43:12,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 1220 states. [2021-06-12 17:43:12,511 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.980769230769231) internal successors, (259), 52 states have internal predecessors, (259), 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 232 [2021-06-12 17:43:12,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:43:12,516 INFO L225 Difference]: With dead ends: 8890 [2021-06-12 17:43:12,517 INFO L226 Difference]: Without dead ends: 8890 [2021-06-12 17:43:12,577 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 2652 GetRequests, 1410 SyntacticMatches, 0 SemanticMatches, 1242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 781609 ImplicationChecksByTransitivity, 78883.6ms TimeCoverageRelationStatistics Valid=269445, Invalid=1276847, Unknown=0, NotChecked=0, Total=1546292 [2021-06-12 17:43:12,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8890 states. [2021-06-12 17:43:12,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8890 to 8098. [2021-06-12 17:43:12,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8098 states, 8097 states have (on average 1.995059898727924) internal successors, (16154), 8097 states have internal predecessors, (16154), 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) [2021-06-12 17:43:12,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8098 states to 8098 states and 16154 transitions. [2021-06-12 17:43:12,646 INFO L78 Accepts]: Start accepts. Automaton has 8098 states and 16154 transitions. Word has length 232 [2021-06-12 17:43:12,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:43:12,646 INFO L482 AbstractCegarLoop]: Abstraction has 8098 states and 16154 transitions. [2021-06-12 17:43:12,646 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 52 states, 52 states have (on average 4.980769230769231) internal successors, (259), 52 states have internal predecessors, (259), 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) [2021-06-12 17:43:12,647 INFO L276 IsEmpty]: Start isEmpty. Operand 8098 states and 16154 transitions. [2021-06-12 17:43:12,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-06-12 17:43:12,655 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:43:12,655 INFO L472 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 18, 18, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:43:12,868 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 17:43:12,869 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:43:12,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:43:12,869 INFO L82 PathProgramCache]: Analyzing trace with hash 367130753, now seen corresponding path program 19 times [2021-06-12 17:43:12,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:43:12,870 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426302435] [2021-06-12 17:43:12,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:43:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:43:13,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1390 backedges. 0 proven. 1242 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-06-12 17:43:13,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:43:13,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426302435] [2021-06-12 17:43:13,275 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426302435] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:43:13,275 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809590299] [2021-06-12 17:43:13,275 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 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 [2021-06-12 17:43:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:43:13,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 38 conjunts are in the unsatisfiable core [2021-06-12 17:43:13,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 17:43:13,672 INFO L134 CoverageAnalysis]: Checked inductivity of 1390 backedges. 0 proven. 1242 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-06-12 17:43:13,673 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809590299] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:43:13,673 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 17:43:13,673 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 41 [2021-06-12 17:43:13,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919573283] [2021-06-12 17:43:13,673 INFO L462 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-06-12 17:43:13,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:43:13,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-06-12 17:43:13,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=1200, Unknown=0, NotChecked=0, Total=1640 [2021-06-12 17:43:13,674 INFO L87 Difference]: Start difference. First operand 8098 states and 16154 transitions. Second operand has 41 states, 41 states have (on average 5.317073170731708) internal successors, (218), 41 states have internal predecessors, (218), 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) [2021-06-12 17:43:14,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:43:14,533 INFO L93 Difference]: Finished difference Result 8840 states and 17638 transitions. [2021-06-12 17:43:14,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-06-12 17:43:14,533 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.317073170731708) internal successors, (218), 41 states have internal predecessors, (218), 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 245 [2021-06-12 17:43:14,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:43:14,540 INFO L225 Difference]: With dead ends: 8840 [2021-06-12 17:43:14,540 INFO L226 Difference]: Without dead ends: 8840 [2021-06-12 17:43:14,540 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1104 ImplicationChecksByTransitivity, 997.6ms TimeCoverageRelationStatistics Valid=1847, Invalid=4005, Unknown=0, NotChecked=0, Total=5852 [2021-06-12 17:43:14,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8840 states. [2021-06-12 17:43:14,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8840 to 8522. [2021-06-12 17:43:14,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8522 states, 8521 states have (on average 1.9953057152916325) internal successors, (17002), 8521 states have internal predecessors, (17002), 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) [2021-06-12 17:43:14,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8522 states to 8522 states and 17002 transitions. [2021-06-12 17:43:14,613 INFO L78 Accepts]: Start accepts. Automaton has 8522 states and 17002 transitions. Word has length 245 [2021-06-12 17:43:14,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:43:14,613 INFO L482 AbstractCegarLoop]: Abstraction has 8522 states and 17002 transitions. [2021-06-12 17:43:14,614 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 5.317073170731708) internal successors, (218), 41 states have internal predecessors, (218), 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) [2021-06-12 17:43:14,614 INFO L276 IsEmpty]: Start isEmpty. Operand 8522 states and 17002 transitions. [2021-06-12 17:43:14,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2021-06-12 17:43:14,621 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:43:14,621 INFO L472 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 19, 19, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:43:14,832 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-06-12 17:43:14,833 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:43:14,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:43:14,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1797408570, now seen corresponding path program 20 times [2021-06-12 17:43:14,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:43:14,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733803521] [2021-06-12 17:43:14,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:43:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:43:15,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1535 backedges. 0 proven. 1387 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-06-12 17:43:15,281 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:43:15,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733803521] [2021-06-12 17:43:15,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733803521] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:43:15,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [393985642] [2021-06-12 17:43:15,281 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 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 [2021-06-12 17:43:15,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-12 17:43:15,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 17:43:15,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 40 conjunts are in the unsatisfiable core [2021-06-12 17:43:15,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 17:43:15,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1535 backedges. 0 proven. 1387 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-06-12 17:43:15,674 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [393985642] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:43:15,674 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 17:43:15,674 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 43 [2021-06-12 17:43:15,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115843968] [2021-06-12 17:43:15,675 INFO L462 AbstractCegarLoop]: Interpolant automaton has 43 states [2021-06-12 17:43:15,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:43:15,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-06-12 17:43:15,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=483, Invalid=1323, Unknown=0, NotChecked=0, Total=1806 [2021-06-12 17:43:15,675 INFO L87 Difference]: Start difference. First operand 8522 states and 17002 transitions. Second operand has 43 states, 43 states have (on average 5.255813953488372) internal successors, (226), 43 states have internal predecessors, (226), 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) [2021-06-12 17:43:16,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:43:16,649 INFO L93 Difference]: Finished difference Result 8946 states and 17850 transitions. [2021-06-12 17:43:16,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-06-12 17:43:16,650 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.255813953488372) internal successors, (226), 43 states have internal predecessors, (226), 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 253 [2021-06-12 17:43:16,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:43:16,655 INFO L225 Difference]: With dead ends: 8946 [2021-06-12 17:43:16,655 INFO L226 Difference]: Without dead ends: 8946 [2021-06-12 17:43:16,656 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 1001.5ms TimeCoverageRelationStatistics Valid=2044, Invalid=4436, Unknown=0, NotChecked=0, Total=6480 [2021-06-12 17:43:16,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8946 states. [2021-06-12 17:43:16,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8946 to 8946. [2021-06-12 17:43:16,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8946 states, 8945 states have (on average 1.995528228060369) internal successors, (17850), 8945 states have internal predecessors, (17850), 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) [2021-06-12 17:43:16,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8946 states to 8946 states and 17850 transitions. [2021-06-12 17:43:16,739 INFO L78 Accepts]: Start accepts. Automaton has 8946 states and 17850 transitions. Word has length 253 [2021-06-12 17:43:16,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:43:16,740 INFO L482 AbstractCegarLoop]: Abstraction has 8946 states and 17850 transitions. [2021-06-12 17:43:16,740 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 43 states, 43 states have (on average 5.255813953488372) internal successors, (226), 43 states have internal predecessors, (226), 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) [2021-06-12 17:43:16,740 INFO L276 IsEmpty]: Start isEmpty. Operand 8946 states and 17850 transitions. [2021-06-12 17:43:16,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2021-06-12 17:43:16,748 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:43:16,748 INFO L472 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 20, 20, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-12 17:43:16,949 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-06-12 17:43:16,949 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:43:16,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:43:16,949 INFO L82 PathProgramCache]: Analyzing trace with hash 847995915, now seen corresponding path program 21 times [2021-06-12 17:43:16,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:43:16,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684206235] [2021-06-12 17:43:16,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:43:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:43:17,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1688 backedges. 0 proven. 1688 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:43:17,780 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:43:17,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684206235] [2021-06-12 17:43:17,780 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684206235] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:43:17,780 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286988975] [2021-06-12 17:43:17,780 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 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 [2021-06-12 17:43:17,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-06-12 17:43:17,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-12 17:43:17,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 18 conjunts are in the unsatisfiable core [2021-06-12 17:43:17,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-12 17:43:18,583 INFO L134 CoverageAnalysis]: Checked inductivity of 1688 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 1540 trivial. 0 not checked. [2021-06-12 17:43:18,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286988975] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-12 17:43:18,583 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-12 17:43:18,583 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 19] total 71 [2021-06-12 17:43:18,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867361343] [2021-06-12 17:43:18,583 INFO L462 AbstractCegarLoop]: Interpolant automaton has 71 states [2021-06-12 17:43:18,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:43:18,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-06-12 17:43:18,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=819, Invalid=4151, Unknown=0, NotChecked=0, Total=4970 [2021-06-12 17:43:18,584 INFO L87 Difference]: Start difference. First operand 8946 states and 17850 transitions. Second operand has 71 states, 71 states have (on average 4.957746478873239) internal successors, (352), 71 states have internal predecessors, (352), 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) [2021-06-12 17:44:48,346 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2021-06-12 17:46:09,658 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2021-06-12 17:47:00,937 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2021-06-12 17:47:40,191 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2021-06-12 17:51:00,299 WARN L205 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2021-06-12 17:51:14,708 WARN L205 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2021-06-12 17:51:52,468 WARN L205 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2021-06-12 17:51:54,483 WARN L205 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 10 Received shutdown request... [2021-06-12 17:51:54,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3609 states. [2021-06-12 17:51:54,801 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-12 17:51:54,801 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-12 17:51:54,803 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-12 17:51:54,804 WARN L196 ceAbstractionStarter]: Timeout [2021-06-12 17:51:54,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.06 05:51:54 BasicIcfg [2021-06-12 17:51:54,804 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-12 17:51:54,805 INFO L168 Benchmark]: Toolchain (without parser) took 702683.74 ms. Allocated memory was 192.9 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 154.3 MB in the beginning and 5.4 GB in the end (delta: -5.2 GB). Peak memory consumption was 2.6 GB. Max. memory is 8.0 GB. [2021-06-12 17:51:54,805 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 192.9 MB. Free memory is still 173.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 17:51:54,805 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.35 ms. Allocated memory is still 192.9 MB. Free memory was 154.2 MB in the beginning and 101.4 MB in the end (delta: 52.8 MB). Peak memory consumption was 53.9 MB. Max. memory is 8.0 GB. [2021-06-12 17:51:54,805 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.61 ms. Allocated memory is still 192.9 MB. Free memory was 101.4 MB in the beginning and 99.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:51:54,805 INFO L168 Benchmark]: Boogie Preprocessor took 16.83 ms. Allocated memory is still 192.9 MB. Free memory was 99.3 MB in the beginning and 97.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-12 17:51:54,805 INFO L168 Benchmark]: RCFGBuilder took 457.25 ms. Allocated memory was 192.9 MB in the beginning and 231.7 MB in the end (delta: 38.8 MB). Free memory was 97.7 MB in the beginning and 206.6 MB in the end (delta: -108.9 MB). Peak memory consumption was 25.3 MB. Max. memory is 8.0 GB. [2021-06-12 17:51:54,805 INFO L168 Benchmark]: TraceAbstraction took 701474.78 ms. Allocated memory was 231.7 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 206.1 MB in the beginning and 5.4 GB in the end (delta: -5.2 GB). Peak memory consumption was 2.6 GB. Max. memory is 8.0 GB. [2021-06-12 17:51:54,805 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 192.9 MB. Free memory is still 173.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 681.35 ms. Allocated memory is still 192.9 MB. Free memory was 154.2 MB in the beginning and 101.4 MB in the end (delta: 52.8 MB). Peak memory consumption was 53.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 47.61 ms. Allocated memory is still 192.9 MB. Free memory was 101.4 MB in the beginning and 99.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 16.83 ms. Allocated memory is still 192.9 MB. Free memory was 99.3 MB in the beginning and 97.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 457.25 ms. Allocated memory was 192.9 MB in the beginning and 231.7 MB in the end (delta: 38.8 MB). Free memory was 97.7 MB in the beginning and 206.6 MB in the end (delta: -108.9 MB). Peak memory consumption was 25.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 701474.78 ms. Allocated memory was 231.7 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 206.1 MB in the beginning and 5.4 GB in the end (delta: -5.2 GB). Peak memory consumption was 2.6 GB. Max. memory is 8.0 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 Cancelled while BasicCegarLoop was constructing difference of abstraction (8946states) and FLOYD_HOARE automaton (currently 3609 states, 71 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 3630 known predicates. - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 3 procedures, 104 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 701391.6ms, OverallIterations: 24, TraceHistogramMax: 20, EmptinessCheckTime: 170.8ms, AutomataDifference: 681723.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 43.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2552 SDtfs, 70123 SDslu, 39267 SDs, 0 SdLazy, 8613 SolverSat, 14866 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11572.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18006 GetRequests, 10437 SyntacticMatches, 0 SemanticMatches, 7568 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9611061 ImplicationChecksByTransitivity, 530791.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8946occurred in iteration=23, InterpolantAutomatonStates: 3737, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1051.8ms AutomataMinimizationTime, 23 MinimizatonAttempts, 6156 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 463.2ms SsaConstructionTime, 1245.5ms SatisfiabilityAnalysisTime, 10542.4ms InterpolantComputationTime, 7254 NumberOfCodeBlocks, 7030 NumberOfCodeBlocksAsserted, 132 NumberOfCheckSat, 7208 ConstructedInterpolants, 0 QuantifiedInterpolants, 13353 SizeOfPredicates, 340 NumberOfNonLiveVariables, 7197 ConjunctsInSsa, 384 ConjunctsInUnsatCore, 46 InterpolantComputations, 3 PerfectInterpolantSequences, 6286/24460 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