/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-22 00:08:04,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-22 00:08:04,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-22 00:08:04,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-22 00:08:04,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-22 00:08:04,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-22 00:08:04,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-22 00:08:04,393 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-Separate.epf [2021-05-22 00:08:04,428 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-22 00:08:04,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-22 00:08:04,429 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-22 00:08:04,429 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-22 00:08:04,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-22 00:08:04,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-22 00:08:04,432 INFO L138 SettingsManager]: * Use SBE=true [2021-05-22 00:08:04,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-22 00:08:04,432 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-22 00:08:04,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-22 00:08:04,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-22 00:08:04,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-22 00:08:04,433 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-22 00:08:04,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-22 00:08:04,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-22 00:08:04,433 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-22 00:08:04,434 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-22 00:08:04,434 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-22 00:08:04,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-22 00:08:04,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-22 00:08:04,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-22 00:08:04,434 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-22 00:08:04,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-22 00:08:04,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-22 00:08:04,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-22 00:08:04,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-22 00:08:04,435 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-22 00:08:04,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-22 00:08:04,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-22 00:08:04,435 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-22 00:08:04,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-22 00:08:04,435 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-05-22 00:08:04,436 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-22 00:08:04,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-22 00:08:04,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-22 00:08:04,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-22 00:08:04,735 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-22 00:08:04,736 INFO L275 PluginConnector]: CDTParser initialized [2021-05-22 00:08:04,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2021-05-22 00:08:04,794 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4271ea02/eb83eacd97d94c2bb756563146bf6528/FLAGefb5d60f2 [2021-05-22 00:08:05,327 INFO L306 CDTParser]: Found 1 translation units. [2021-05-22 00:08:05,328 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-nondet/nondet-loop-bound-2.i [2021-05-22 00:08:05,344 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4271ea02/eb83eacd97d94c2bb756563146bf6528/FLAGefb5d60f2 [2021-05-22 00:08:05,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4271ea02/eb83eacd97d94c2bb756563146bf6528 [2021-05-22 00:08:05,777 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-22 00:08:05,778 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-22 00:08:05,780 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-22 00:08:05,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-22 00:08:05,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-22 00:08:05,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.05 12:08:05" (1/1) ... [2021-05-22 00:08:05,785 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@634d4c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:08:05, skipping insertion in model container [2021-05-22 00:08:05,785 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.05 12:08:05" (1/1) ... [2021-05-22 00:08:05,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-22 00:08:05,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-22 00:08:06,186 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-nondet/nondet-loop-bound-2.i[30035,30048] [2021-05-22 00:08:06,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-22 00:08:06,216 INFO L203 MainTranslator]: Completed pre-run [2021-05-22 00:08:06,250 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-nondet/nondet-loop-bound-2.i[30035,30048] [2021-05-22 00:08:06,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-22 00:08:06,326 INFO L208 MainTranslator]: Completed translation [2021-05-22 00:08:06,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:08:06 WrapperNode [2021-05-22 00:08:06,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-22 00:08:06,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-22 00:08:06,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-22 00:08:06,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-22 00:08:06,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:08:06" (1/1) ... [2021-05-22 00:08:06,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:08:06" (1/1) ... [2021-05-22 00:08:06,385 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-22 00:08:06,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-22 00:08:06,386 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-22 00:08:06,386 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-22 00:08:06,393 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:08:06" (1/1) ... [2021-05-22 00:08:06,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:08:06" (1/1) ... [2021-05-22 00:08:06,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:08:06" (1/1) ... [2021-05-22 00:08:06,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:08:06" (1/1) ... [2021-05-22 00:08:06,414 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:08:06" (1/1) ... [2021-05-22 00:08:06,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:08:06" (1/1) ... [2021-05-22 00:08:06,418 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:08:06" (1/1) ... [2021-05-22 00:08:06,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-22 00:08:06,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-22 00:08:06,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-22 00:08:06,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-22 00:08:06,421 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:08:06" (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 [2021-05-22 00:08:06,493 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2021-05-22 00:08:06,493 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2021-05-22 00:08:06,494 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2021-05-22 00:08:06,494 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2021-05-22 00:08:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-22 00:08:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-22 00:08:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-22 00:08:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-22 00:08:06,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-22 00:08:06,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-22 00:08:06,497 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-22 00:08:06,859 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-22 00:08:06,860 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-05-22 00:08:06,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.05 12:08:06 BoogieIcfgContainer [2021-05-22 00:08:06,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-22 00:08:06,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-22 00:08:06,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-22 00:08:06,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-22 00:08:06,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.05 12:08:05" (1/3) ... [2021-05-22 00:08:06,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4291bcca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.05 12:08:06, skipping insertion in model container [2021-05-22 00:08:06,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.05 12:08:06" (2/3) ... [2021-05-22 00:08:06,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4291bcca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.05 12:08:06, skipping insertion in model container [2021-05-22 00:08:06,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.05 12:08:06" (3/3) ... [2021-05-22 00:08:06,869 INFO L111 eAbstractionObserver]: Analyzing ICFG nondet-loop-bound-2.i [2021-05-22 00:08:06,877 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-22 00:08:06,877 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-22 00:08:06,877 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-22 00:08:06,878 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-22 00:08:06,914 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,914 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,915 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,915 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,915 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,915 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,915 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,915 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,915 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,916 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,916 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,916 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,916 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,916 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,917 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,917 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,917 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,917 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,917 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,917 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,918 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,918 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,918 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,919 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,919 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,919 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,920 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,920 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,920 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,921 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,923 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,923 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,923 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,923 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,924 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,929 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,929 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,930 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,930 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,930 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,930 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:06,936 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-22 00:08:06,955 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-05-22 00:08:06,986 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 00:08:06,986 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 00:08:06,986 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 00:08:06,986 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 00:08:06,986 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 00:08:06,986 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 00:08:06,986 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 00:08:06,986 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-22 00:08:06,996 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 72 places, 69 transitions, 148 flow [2021-05-22 00:08:07,071 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1329 states, 1323 states have (on average 2.7135298563869994) internal successors, (3590), 1328 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:07,076 INFO L276 IsEmpty]: Start isEmpty. Operand has 1329 states, 1323 states have (on average 2.7135298563869994) internal successors, (3590), 1328 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:07,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-22 00:08:07,089 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:07,090 INFO L521 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] [2021-05-22 00:08:07,090 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:07,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:07,095 INFO L82 PathProgramCache]: Analyzing trace with hash 2101000019, now seen corresponding path program 1 times [2021-05-22 00:08:07,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:07,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412733361] [2021-05-22 00:08:07,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:07,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:07,505 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:07,505 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412733361] [2021-05-22 00:08:07,506 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412733361] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:08:07,506 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:08:07,506 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 00:08:07,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930610195] [2021-05-22 00:08:07,510 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-22 00:08:07,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:07,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-22 00:08:07,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-22 00:08:07,526 INFO L87 Difference]: Start difference. First operand has 1329 states, 1323 states have (on average 2.7135298563869994) internal successors, (3590), 1328 states have internal predecessors, (3590), 0 states have call successors, (0), 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 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:07,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:07,824 INFO L93 Difference]: Finished difference Result 1205 states and 2955 transitions. [2021-05-22 00:08:07,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 00:08:07,826 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-05-22 00:08:07,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:07,844 INFO L225 Difference]: With dead ends: 1205 [2021-05-22 00:08:07,844 INFO L226 Difference]: Without dead ends: 462 [2021-05-22 00:08:07,848 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 221.0ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-05-22 00:08:07,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-05-22 00:08:07,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 462. [2021-05-22 00:08:07,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 460 states have (on average 2.2543478260869567) internal successors, (1037), 461 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:07,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 1037 transitions. [2021-05-22 00:08:07,922 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 1037 transitions. Word has length 34 [2021-05-22 00:08:07,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:07,923 INFO L482 AbstractCegarLoop]: Abstraction has 462 states and 1037 transitions. [2021-05-22 00:08:07,923 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:07,923 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 1037 transitions. [2021-05-22 00:08:07,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-05-22 00:08:07,925 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:07,925 INFO L521 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] [2021-05-22 00:08:07,926 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-22 00:08:07,926 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:07,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:07,927 INFO L82 PathProgramCache]: Analyzing trace with hash 317679082, now seen corresponding path program 1 times [2021-05-22 00:08:07,927 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:07,927 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852027119] [2021-05-22 00:08:07,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:08,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:08,065 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:08,065 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852027119] [2021-05-22 00:08:08,065 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852027119] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:08:08,065 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:08:08,065 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 00:08:08,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585389865] [2021-05-22 00:08:08,067 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 00:08:08,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:08,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 00:08:08,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-05-22 00:08:08,068 INFO L87 Difference]: Start difference. First operand 462 states and 1037 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:08,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:08,249 INFO L93 Difference]: Finished difference Result 386 states and 851 transitions. [2021-05-22 00:08:08,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-22 00:08:08,249 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-05-22 00:08:08,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:08,250 INFO L225 Difference]: With dead ends: 386 [2021-05-22 00:08:08,250 INFO L226 Difference]: Without dead ends: 0 [2021-05-22 00:08:08,252 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 143.7ms TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-05-22 00:08:08,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-22 00:08:08,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-22 00:08:08,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:08,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-22 00:08:08,252 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2021-05-22 00:08:08,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:08,253 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-22 00:08:08,253 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:08,253 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-22 00:08:08,253 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-22 00:08:08,253 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-22 00:08:08,254 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-05-22 00:08:08,256 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-05-22 00:08:08,267 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 00:08:08,268 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 00:08:08,268 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 00:08:08,268 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 00:08:08,268 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 00:08:08,268 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 00:08:08,268 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 00:08:08,268 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-22 00:08:08,270 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 72 places, 69 transitions, 148 flow [2021-05-22 00:08:08,319 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1329 states, 1323 states have (on average 2.7135298563869994) internal successors, (3590), 1328 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:08,322 INFO L276 IsEmpty]: Start isEmpty. Operand has 1329 states, 1323 states have (on average 2.7135298563869994) internal successors, (3590), 1328 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:08,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-05-22 00:08:08,326 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:08,326 INFO L521 BasicCegarLoop]: trace histogram [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] [2021-05-22 00:08:08,326 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-22 00:08:08,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:08,326 INFO L82 PathProgramCache]: Analyzing trace with hash -821612, now seen corresponding path program 1 times [2021-05-22 00:08:08,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:08,327 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950865254] [2021-05-22 00:08:08,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:08,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-22 00:08:08,348 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-22 00:08:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-22 00:08:08,363 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-22 00:08:08,384 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-22 00:08:08,385 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-05-22 00:08:08,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-22 00:08:08,385 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-05-22 00:08:08,385 WARN L242 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-05-22 00:08:08,385 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-05-22 00:08:08,397 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,397 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,397 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,397 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,398 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,398 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,398 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,398 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,398 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,398 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,398 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,398 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,398 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,399 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,399 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,399 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,399 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,399 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,399 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,399 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,399 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,399 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,399 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,400 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,400 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,400 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,400 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,400 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,400 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,400 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,401 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,401 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,401 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,401 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,401 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,401 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,401 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,401 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,401 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,401 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,402 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,402 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,402 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,402 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,402 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,402 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,402 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,402 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,403 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,403 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,403 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,403 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,403 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,403 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,403 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,403 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,403 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,403 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,404 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,404 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,404 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,404 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,404 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,404 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,404 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,404 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,404 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,404 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,405 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,405 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,405 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,405 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,405 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,407 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,407 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,407 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,407 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,407 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,408 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,409 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,409 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,409 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,409 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,409 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,410 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,410 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,410 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,411 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,411 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,411 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:08,412 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-22 00:08:08,412 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-05-22 00:08:08,413 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 00:08:08,413 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 00:08:08,413 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 00:08:08,413 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 00:08:08,413 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 00:08:08,413 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 00:08:08,413 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 00:08:08,413 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-22 00:08:08,415 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 86 transitions, 196 flow [2021-05-22 00:08:08,743 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8109 states, 8101 states have (on average 3.525490680162943) internal successors, (28560), 8108 states have internal predecessors, (28560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:08,765 INFO L276 IsEmpty]: Start isEmpty. Operand has 8109 states, 8101 states have (on average 3.525490680162943) internal successors, (28560), 8108 states have internal predecessors, (28560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:08,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-22 00:08:08,766 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:08,766 INFO L521 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] [2021-05-22 00:08:08,767 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:08,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:08,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1924836355, now seen corresponding path program 1 times [2021-05-22 00:08:08,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:08,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711060871] [2021-05-22 00:08:08,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:08,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:08,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:08,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711060871] [2021-05-22 00:08:08,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711060871] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:08:08,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:08:08,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 00:08:08,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521096134] [2021-05-22 00:08:08,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-22 00:08:08,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:08,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-22 00:08:08,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-22 00:08:08,891 INFO L87 Difference]: Start difference. First operand has 8109 states, 8101 states have (on average 3.525490680162943) internal successors, (28560), 8108 states have internal predecessors, (28560), 0 states have call successors, (0), 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 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:09,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:09,179 INFO L93 Difference]: Finished difference Result 8597 states and 28009 transitions. [2021-05-22 00:08:09,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 00:08:09,179 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-05-22 00:08:09,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:09,208 INFO L225 Difference]: With dead ends: 8597 [2021-05-22 00:08:09,208 INFO L226 Difference]: Without dead ends: 3708 [2021-05-22 00:08:09,209 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 152.4ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-05-22 00:08:09,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3708 states. [2021-05-22 00:08:09,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3708 to 3708. [2021-05-22 00:08:09,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3708 states, 3705 states have (on average 3.1379217273954114) internal successors, (11626), 3707 states have internal predecessors, (11626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:09,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3708 states to 3708 states and 11626 transitions. [2021-05-22 00:08:09,409 INFO L78 Accepts]: Start accepts. Automaton has 3708 states and 11626 transitions. Word has length 34 [2021-05-22 00:08:09,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:09,410 INFO L482 AbstractCegarLoop]: Abstraction has 3708 states and 11626 transitions. [2021-05-22 00:08:09,410 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:09,410 INFO L276 IsEmpty]: Start isEmpty. Operand 3708 states and 11626 transitions. [2021-05-22 00:08:09,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-05-22 00:08:09,411 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:09,411 INFO L521 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] [2021-05-22 00:08:09,411 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-22 00:08:09,412 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:09,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:09,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1857372259, now seen corresponding path program 1 times [2021-05-22 00:08:09,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:09,412 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839172439] [2021-05-22 00:08:09,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:09,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:09,606 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:09,606 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839172439] [2021-05-22 00:08:09,606 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839172439] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:08:09,607 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:08:09,607 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 00:08:09,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767069474] [2021-05-22 00:08:09,607 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 00:08:09,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:09,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 00:08:09,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-05-22 00:08:09,608 INFO L87 Difference]: Start difference. First operand 3708 states and 11626 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:09,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:09,867 INFO L93 Difference]: Finished difference Result 5118 states and 15453 transitions. [2021-05-22 00:08:09,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-22 00:08:09,867 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-05-22 00:08:09,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:09,890 INFO L225 Difference]: With dead ends: 5118 [2021-05-22 00:08:09,890 INFO L226 Difference]: Without dead ends: 3850 [2021-05-22 00:08:09,890 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 141.5ms TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-05-22 00:08:09,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3850 states. [2021-05-22 00:08:09,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3850 to 2748. [2021-05-22 00:08:09,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2748 states, 2746 states have (on average 3.1019664967225054) internal successors, (8518), 2747 states have internal predecessors, (8518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:10,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2748 states to 2748 states and 8518 transitions. [2021-05-22 00:08:10,000 INFO L78 Accepts]: Start accepts. Automaton has 2748 states and 8518 transitions. Word has length 46 [2021-05-22 00:08:10,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:10,000 INFO L482 AbstractCegarLoop]: Abstraction has 2748 states and 8518 transitions. [2021-05-22 00:08:10,000 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:10,001 INFO L276 IsEmpty]: Start isEmpty. Operand 2748 states and 8518 transitions. [2021-05-22 00:08:10,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-22 00:08:10,002 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:10,003 INFO L521 BasicCegarLoop]: trace histogram [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] [2021-05-22 00:08:10,006 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-22 00:08:10,006 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:10,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:10,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1479235996, now seen corresponding path program 1 times [2021-05-22 00:08:10,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:10,012 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673539944] [2021-05-22 00:08:10,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:10,161 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:10,161 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:10,161 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673539944] [2021-05-22 00:08:10,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673539944] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:10,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437717003] [2021-05-22 00:08:10,162 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 [2021-05-22 00:08:10,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:10,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-22 00:08:10,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:10,651 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:10,651 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437717003] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:10,651 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:08:10,651 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-05-22 00:08:10,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21246638] [2021-05-22 00:08:10,652 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-22 00:08:10,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:10,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-22 00:08:10,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-05-22 00:08:10,653 INFO L87 Difference]: Start difference. First operand 2748 states and 8518 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:11,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:11,102 INFO L93 Difference]: Finished difference Result 3660 states and 10826 transitions. [2021-05-22 00:08:11,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-22 00:08:11,102 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-05-22 00:08:11,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:11,114 INFO L225 Difference]: With dead ends: 3660 [2021-05-22 00:08:11,114 INFO L226 Difference]: Without dead ends: 2406 [2021-05-22 00:08:11,115 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 399.8ms TimeCoverageRelationStatistics Valid=215, Invalid=841, Unknown=0, NotChecked=0, Total=1056 [2021-05-22 00:08:11,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2406 states. [2021-05-22 00:08:11,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2406 to 1874. [2021-05-22 00:08:11,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1874 states, 1872 states have (on average 2.940705128205128) internal successors, (5505), 1873 states have internal predecessors, (5505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:11,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1874 states to 1874 states and 5505 transitions. [2021-05-22 00:08:11,182 INFO L78 Accepts]: Start accepts. Automaton has 1874 states and 5505 transitions. Word has length 56 [2021-05-22 00:08:11,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:11,182 INFO L482 AbstractCegarLoop]: Abstraction has 1874 states and 5505 transitions. [2021-05-22 00:08:11,182 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:11,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1874 states and 5505 transitions. [2021-05-22 00:08:11,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-22 00:08:11,185 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:11,185 INFO L521 BasicCegarLoop]: trace histogram [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] [2021-05-22 00:08:11,409 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-22 00:08:11,409 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:11,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:11,410 INFO L82 PathProgramCache]: Analyzing trace with hash 298451390, now seen corresponding path program 1 times [2021-05-22 00:08:11,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:11,410 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844529698] [2021-05-22 00:08:11,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:11,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:11,562 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:11,562 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:11,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844529698] [2021-05-22 00:08:11,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844529698] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:11,562 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22816471] [2021-05-22 00:08:11,563 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 [2021-05-22 00:08:11,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:11,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-22 00:08:11,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:12,002 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:12,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22816471] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:12,003 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:08:12,003 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-05-22 00:08:12,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901322160] [2021-05-22 00:08:12,003 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-22 00:08:12,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:12,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-22 00:08:12,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2021-05-22 00:08:12,004 INFO L87 Difference]: Start difference. First operand 1874 states and 5505 transitions. Second operand has 24 states, 24 states have (on average 4.25) internal successors, (102), 24 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:13,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:13,260 INFO L93 Difference]: Finished difference Result 2842 states and 8165 transitions. [2021-05-22 00:08:13,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-05-22 00:08:13,260 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.25) internal successors, (102), 24 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-05-22 00:08:13,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:13,268 INFO L225 Difference]: With dead ends: 2842 [2021-05-22 00:08:13,268 INFO L226 Difference]: Without dead ends: 1524 [2021-05-22 00:08:13,269 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 790 ImplicationChecksByTransitivity, 973.4ms TimeCoverageRelationStatistics Valid=555, Invalid=2867, Unknown=0, NotChecked=0, Total=3422 [2021-05-22 00:08:13,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2021-05-22 00:08:13,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1396. [2021-05-22 00:08:13,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1394 states have (on average 2.8622668579626973) internal successors, (3990), 1395 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:13,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 3990 transitions. [2021-05-22 00:08:13,308 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 3990 transitions. Word has length 60 [2021-05-22 00:08:13,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:13,309 INFO L482 AbstractCegarLoop]: Abstraction has 1396 states and 3990 transitions. [2021-05-22 00:08:13,309 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.25) internal successors, (102), 24 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:13,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 3990 transitions. [2021-05-22 00:08:13,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-22 00:08:13,311 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:13,311 INFO L521 BasicCegarLoop]: trace histogram [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] [2021-05-22 00:08:13,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:13,525 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:13,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:13,525 INFO L82 PathProgramCache]: Analyzing trace with hash -437778756, now seen corresponding path program 2 times [2021-05-22 00:08:13,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:13,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883612740] [2021-05-22 00:08:13,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:13,652 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:13,652 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:13,653 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883612740] [2021-05-22 00:08:13,653 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883612740] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:13,653 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078996591] [2021-05-22 00:08:13,653 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 [2021-05-22 00:08:13,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-05-22 00:08:13,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:08:13,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-22 00:08:13,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:14,334 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-22 00:08:14,334 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078996591] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:08:14,334 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-22 00:08:14,334 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 23 [2021-05-22 00:08:14,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886797869] [2021-05-22 00:08:14,335 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-22 00:08:14,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:14,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-22 00:08:14,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2021-05-22 00:08:14,337 INFO L87 Difference]: Start difference. First operand 1396 states and 3990 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:14,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:14,719 INFO L93 Difference]: Finished difference Result 1244 states and 3542 transitions. [2021-05-22 00:08:14,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-22 00:08:14,719 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-05-22 00:08:14,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:14,720 INFO L225 Difference]: With dead ends: 1244 [2021-05-22 00:08:14,720 INFO L226 Difference]: Without dead ends: 0 [2021-05-22 00:08:14,720 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 544.0ms TimeCoverageRelationStatistics Valid=151, Invalid=779, Unknown=0, NotChecked=0, Total=930 [2021-05-22 00:08:14,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-22 00:08:14,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-22 00:08:14,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:14,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-22 00:08:14,722 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2021-05-22 00:08:14,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:14,723 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-22 00:08:14,723 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:14,723 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-22 00:08:14,723 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-22 00:08:14,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-05-22 00:08:14,941 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-05-22 00:08:14,941 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-05-22 00:08:14,942 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 00:08:14,942 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 00:08:14,942 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 00:08:14,942 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 00:08:14,942 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 00:08:14,942 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 00:08:14,942 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 00:08:14,942 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-22 00:08:14,944 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 86 transitions, 196 flow [2021-05-22 00:08:15,635 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8109 states, 8101 states have (on average 3.525490680162943) internal successors, (28560), 8108 states have internal predecessors, (28560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:15,667 INFO L276 IsEmpty]: Start isEmpty. Operand has 8109 states, 8101 states have (on average 3.525490680162943) internal successors, (28560), 8108 states have internal predecessors, (28560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:15,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-22 00:08:15,683 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:15,683 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:15,683 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-22 00:08:15,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:15,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1728251235, now seen corresponding path program 1 times [2021-05-22 00:08:15,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:15,685 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935147967] [2021-05-22 00:08:15,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-22 00:08:15,732 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-22 00:08:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-22 00:08:15,760 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-22 00:08:15,776 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-22 00:08:15,777 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-05-22 00:08:15,777 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-05-22 00:08:15,777 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-05-22 00:08:15,777 WARN L242 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-05-22 00:08:15,777 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-05-22 00:08:15,810 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,810 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,810 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,810 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,810 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,811 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,811 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,811 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,811 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,811 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,811 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,811 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,811 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,811 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,812 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,812 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,812 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,812 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,812 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,812 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,813 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,813 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,813 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,813 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,813 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,813 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,813 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,814 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,814 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,814 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,814 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,814 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,814 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,814 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,814 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,814 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,814 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,814 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,815 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,815 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,815 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,816 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,816 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,816 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,816 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,816 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,816 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,816 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,816 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,816 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,817 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,817 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,817 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,817 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,817 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,817 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,817 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,817 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,817 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,817 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,818 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,818 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,818 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,818 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,818 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,818 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,818 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,819 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,819 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,819 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,819 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,819 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,819 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,819 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,819 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,819 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,819 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,819 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,819 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,819 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,820 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,820 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,820 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,820 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,820 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,820 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,820 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,820 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,820 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,820 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,820 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,831 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,831 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,832 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,832 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,832 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,833 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,833 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,833 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,833 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,833 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,835 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,835 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,835 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,835 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,836 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,837 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,837 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,837 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,837 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,838 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,838 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,839 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,839 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,839 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,839 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,839 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,840 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,840 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,840 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,840 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,840 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,841 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,842 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,842 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,842 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,842 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,842 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,842 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:08:15,857 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-22 00:08:15,859 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-05-22 00:08:15,859 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 00:08:15,860 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 00:08:15,860 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 00:08:15,860 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 00:08:15,860 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 00:08:15,860 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 00:08:15,860 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 00:08:15,860 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-22 00:08:15,865 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 112 places, 103 transitions, 248 flow [2021-05-22 00:08:22,512 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 48789 states, 48779 states have (on average 4.35187273211833) internal successors, (212280), 48788 states have internal predecessors, (212280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:22,599 INFO L276 IsEmpty]: Start isEmpty. Operand has 48789 states, 48779 states have (on average 4.35187273211833) internal successors, (212280), 48788 states have internal predecessors, (212280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:22,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-22 00:08:22,600 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:22,600 INFO L521 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] [2021-05-22 00:08:22,603 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:22,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:22,603 INFO L82 PathProgramCache]: Analyzing trace with hash 2020120723, now seen corresponding path program 1 times [2021-05-22 00:08:22,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:22,604 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866941419] [2021-05-22 00:08:22,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:22,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:22,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:22,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866941419] [2021-05-22 00:08:22,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866941419] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:08:22,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:08:22,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 00:08:22,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409620733] [2021-05-22 00:08:22,867 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-22 00:08:22,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:22,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-22 00:08:22,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-22 00:08:22,993 INFO L87 Difference]: Start difference. First operand has 48789 states, 48779 states have (on average 4.35187273211833) internal successors, (212280), 48788 states have internal predecessors, (212280), 0 states have call successors, (0), 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 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:23,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:23,769 INFO L93 Difference]: Finished difference Result 57149 states and 233481 transitions. [2021-05-22 00:08:23,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 00:08:23,772 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-05-22 00:08:23,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:24,195 INFO L225 Difference]: With dead ends: 57149 [2021-05-22 00:08:24,195 INFO L226 Difference]: Without dead ends: 26184 [2021-05-22 00:08:24,196 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 268.8ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-05-22 00:08:24,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26184 states. [2021-05-22 00:08:25,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26184 to 26184. [2021-05-22 00:08:25,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26184 states, 26180 states have (on average 4.003437738731856) internal successors, (104810), 26183 states have internal predecessors, (104810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:25,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26184 states to 26184 states and 104810 transitions. [2021-05-22 00:08:25,243 INFO L78 Accepts]: Start accepts. Automaton has 26184 states and 104810 transitions. Word has length 34 [2021-05-22 00:08:25,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:25,243 INFO L482 AbstractCegarLoop]: Abstraction has 26184 states and 104810 transitions. [2021-05-22 00:08:25,243 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:25,244 INFO L276 IsEmpty]: Start isEmpty. Operand 26184 states and 104810 transitions. [2021-05-22 00:08:25,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-05-22 00:08:25,245 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:25,246 INFO L521 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] [2021-05-22 00:08:25,246 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-05-22 00:08:25,246 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:25,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:25,246 INFO L82 PathProgramCache]: Analyzing trace with hash 317983230, now seen corresponding path program 1 times [2021-05-22 00:08:25,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:25,247 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165259702] [2021-05-22 00:08:25,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:25,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:25,473 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:25,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165259702] [2021-05-22 00:08:25,474 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165259702] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:08:25,474 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:08:25,474 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 00:08:25,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92948475] [2021-05-22 00:08:25,474 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 00:08:25,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:25,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 00:08:25,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-05-22 00:08:25,475 INFO L87 Difference]: Start difference. First operand 26184 states and 104810 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:26,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:26,147 INFO L93 Difference]: Finished difference Result 44160 states and 169716 transitions. [2021-05-22 00:08:26,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-22 00:08:26,148 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-05-22 00:08:26,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:26,289 INFO L225 Difference]: With dead ends: 44160 [2021-05-22 00:08:26,289 INFO L226 Difference]: Without dead ends: 36340 [2021-05-22 00:08:26,290 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 284.6ms TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-05-22 00:08:26,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36340 states. [2021-05-22 00:08:27,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36340 to 24276. [2021-05-22 00:08:27,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24276 states, 24273 states have (on average 3.949244015984839) internal successors, (95860), 24275 states have internal predecessors, (95860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:27,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24276 states to 24276 states and 95860 transitions. [2021-05-22 00:08:27,378 INFO L78 Accepts]: Start accepts. Automaton has 24276 states and 95860 transitions. Word has length 46 [2021-05-22 00:08:27,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:27,378 INFO L482 AbstractCegarLoop]: Abstraction has 24276 states and 95860 transitions. [2021-05-22 00:08:27,378 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:27,378 INFO L276 IsEmpty]: Start isEmpty. Operand 24276 states and 95860 transitions. [2021-05-22 00:08:27,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-22 00:08:27,380 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:27,381 INFO L521 BasicCegarLoop]: trace histogram [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] [2021-05-22 00:08:27,381 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-05-22 00:08:27,381 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:27,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:27,381 INFO L82 PathProgramCache]: Analyzing trace with hash 1522783278, now seen corresponding path program 1 times [2021-05-22 00:08:27,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:27,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405312719] [2021-05-22 00:08:27,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:27,467 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:27,468 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:27,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405312719] [2021-05-22 00:08:27,468 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405312719] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:27,468 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096611350] [2021-05-22 00:08:27,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-05-22 00:08:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:27,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-22 00:08:27,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:27,969 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:27,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096611350] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:27,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:08:27,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-05-22 00:08:27,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647035056] [2021-05-22 00:08:27,972 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-22 00:08:27,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:27,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-22 00:08:27,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-05-22 00:08:27,973 INFO L87 Difference]: Start difference. First operand 24276 states and 95860 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:28,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:28,788 INFO L93 Difference]: Finished difference Result 40036 states and 151990 transitions. [2021-05-22 00:08:28,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-22 00:08:28,788 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-05-22 00:08:28,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:28,906 INFO L225 Difference]: With dead ends: 40036 [2021-05-22 00:08:28,906 INFO L226 Difference]: Without dead ends: 32036 [2021-05-22 00:08:28,907 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 381.9ms TimeCoverageRelationStatistics Valid=215, Invalid=841, Unknown=0, NotChecked=0, Total=1056 [2021-05-22 00:08:29,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32036 states. [2021-05-22 00:08:29,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32036 to 21952. [2021-05-22 00:08:29,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21952 states, 21949 states have (on average 3.867237687366167) internal successors, (84882), 21951 states have internal predecessors, (84882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:29,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21952 states to 21952 states and 84882 transitions. [2021-05-22 00:08:29,689 INFO L78 Accepts]: Start accepts. Automaton has 21952 states and 84882 transitions. Word has length 56 [2021-05-22 00:08:29,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:29,689 INFO L482 AbstractCegarLoop]: Abstraction has 21952 states and 84882 transitions. [2021-05-22 00:08:29,689 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:29,689 INFO L276 IsEmpty]: Start isEmpty. Operand 21952 states and 84882 transitions. [2021-05-22 00:08:29,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-22 00:08:29,692 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:29,692 INFO L521 BasicCegarLoop]: trace histogram [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] [2021-05-22 00:08:29,893 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-22 00:08:29,893 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:29,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:29,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1933156652, now seen corresponding path program 1 times [2021-05-22 00:08:29,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:29,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734089507] [2021-05-22 00:08:29,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:30,003 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:30,003 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:30,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734089507] [2021-05-22 00:08:30,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734089507] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:30,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735672033] [2021-05-22 00:08:30,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-05-22 00:08:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:30,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-22 00:08:30,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:30,414 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:30,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735672033] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:30,415 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:08:30,415 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-05-22 00:08:30,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48404630] [2021-05-22 00:08:30,415 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-22 00:08:30,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:30,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-22 00:08:30,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2021-05-22 00:08:30,416 INFO L87 Difference]: Start difference. First operand 21952 states and 84882 transitions. Second operand has 24 states, 24 states have (on average 4.25) internal successors, (102), 24 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:32,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:32,515 INFO L93 Difference]: Finished difference Result 59982 states and 219339 transitions. [2021-05-22 00:08:32,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-05-22 00:08:32,515 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.25) internal successors, (102), 24 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-05-22 00:08:32,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:32,702 INFO L225 Difference]: With dead ends: 59982 [2021-05-22 00:08:32,702 INFO L226 Difference]: Without dead ends: 53854 [2021-05-22 00:08:32,703 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1589 ImplicationChecksByTransitivity, 1114.8ms TimeCoverageRelationStatistics Valid=855, Invalid=4695, Unknown=0, NotChecked=0, Total=5550 [2021-05-22 00:08:32,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53854 states. [2021-05-22 00:08:33,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53854 to 21504. [2021-05-22 00:08:33,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21504 states, 21501 states have (on average 3.870982744988605) internal successors, (83230), 21503 states have internal predecessors, (83230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:33,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21504 states to 21504 states and 83230 transitions. [2021-05-22 00:08:33,614 INFO L78 Accepts]: Start accepts. Automaton has 21504 states and 83230 transitions. Word has length 60 [2021-05-22 00:08:33,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:33,615 INFO L482 AbstractCegarLoop]: Abstraction has 21504 states and 83230 transitions. [2021-05-22 00:08:33,615 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.25) internal successors, (102), 24 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:33,615 INFO L276 IsEmpty]: Start isEmpty. Operand 21504 states and 83230 transitions. [2021-05-22 00:08:33,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-22 00:08:33,618 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:33,618 INFO L521 BasicCegarLoop]: trace histogram [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] [2021-05-22 00:08:33,828 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-22 00:08:33,828 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:33,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:33,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1681668076, now seen corresponding path program 2 times [2021-05-22 00:08:33,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:33,829 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328757704] [2021-05-22 00:08:33,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:33,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:33,988 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:33,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:33,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328757704] [2021-05-22 00:08:33,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328757704] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:33,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652669818] [2021-05-22 00:08:33,989 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 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 [2021-05-22 00:08:34,077 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-05-22 00:08:34,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:08:34,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-22 00:08:34,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:34,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-22 00:08:34,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652669818] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:08:34,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-22 00:08:34,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 23 [2021-05-22 00:08:34,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968400863] [2021-05-22 00:08:34,398 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-22 00:08:34,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:34,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-22 00:08:34,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2021-05-22 00:08:34,399 INFO L87 Difference]: Start difference. First operand 21504 states and 83230 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:35,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:35,262 INFO L93 Difference]: Finished difference Result 41966 states and 156477 transitions. [2021-05-22 00:08:35,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-22 00:08:35,262 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-05-22 00:08:35,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:35,361 INFO L225 Difference]: With dead ends: 41966 [2021-05-22 00:08:35,361 INFO L226 Difference]: Without dead ends: 38630 [2021-05-22 00:08:35,361 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 536.8ms TimeCoverageRelationStatistics Valid=230, Invalid=1102, Unknown=0, NotChecked=0, Total=1332 [2021-05-22 00:08:35,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38630 states. [2021-05-22 00:08:36,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38630 to 17752. [2021-05-22 00:08:36,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17752 states, 17750 states have (on average 3.920112676056338) internal successors, (69582), 17751 states have internal predecessors, (69582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:36,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17752 states to 17752 states and 69582 transitions. [2021-05-22 00:08:36,101 INFO L78 Accepts]: Start accepts. Automaton has 17752 states and 69582 transitions. Word has length 60 [2021-05-22 00:08:36,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:36,101 INFO L482 AbstractCegarLoop]: Abstraction has 17752 states and 69582 transitions. [2021-05-22 00:08:36,101 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:36,101 INFO L276 IsEmpty]: Start isEmpty. Operand 17752 states and 69582 transitions. [2021-05-22 00:08:36,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-22 00:08:36,108 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:36,108 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:36,324 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:36,325 INFO L430 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:36,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:36,325 INFO L82 PathProgramCache]: Analyzing trace with hash -411729027, now seen corresponding path program 1 times [2021-05-22 00:08:36,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:36,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807563240] [2021-05-22 00:08:36,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:36,419 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-05-22 00:08:36,419 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:36,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807563240] [2021-05-22 00:08:36,419 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807563240] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:36,419 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893985910] [2021-05-22 00:08:36,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:36,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-22 00:08:36,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:36,744 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:36,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893985910] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:36,744 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:08:36,744 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 21 [2021-05-22 00:08:36,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691999692] [2021-05-22 00:08:36,744 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-22 00:08:36,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:36,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-22 00:08:36,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2021-05-22 00:08:36,745 INFO L87 Difference]: Start difference. First operand 17752 states and 69582 transitions. Second operand has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:37,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:37,365 INFO L93 Difference]: Finished difference Result 29304 states and 110470 transitions. [2021-05-22 00:08:37,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-22 00:08:37,366 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-05-22 00:08:37,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:37,616 INFO L225 Difference]: With dead ends: 29304 [2021-05-22 00:08:37,616 INFO L226 Difference]: Without dead ends: 21894 [2021-05-22 00:08:37,617 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 384.8ms TimeCoverageRelationStatistics Valid=278, Invalid=1128, Unknown=0, NotChecked=0, Total=1406 [2021-05-22 00:08:37,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21894 states. [2021-05-22 00:08:37,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21894 to 15582. [2021-05-22 00:08:37,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15582 states, 15580 states have (on average 3.771566110397946) internal successors, (58761), 15581 states have internal predecessors, (58761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:37,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15582 states to 15582 states and 58761 transitions. [2021-05-22 00:08:37,981 INFO L78 Accepts]: Start accepts. Automaton has 15582 states and 58761 transitions. Word has length 66 [2021-05-22 00:08:37,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:37,982 INFO L482 AbstractCegarLoop]: Abstraction has 15582 states and 58761 transitions. [2021-05-22 00:08:37,982 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:37,982 INFO L276 IsEmpty]: Start isEmpty. Operand 15582 states and 58761 transitions. [2021-05-22 00:08:37,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-05-22 00:08:37,995 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:37,996 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:38,199 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-22 00:08:38,200 INFO L430 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:38,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:38,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1425691909, now seen corresponding path program 1 times [2021-05-22 00:08:38,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:38,201 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959443790] [2021-05-22 00:08:38,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:38,332 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:38,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:38,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959443790] [2021-05-22 00:08:38,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959443790] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:38,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328788581] [2021-05-22 00:08:38,333 INFO L95 rtionOrderModulation]: Keeping assertion order 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 [2021-05-22 00:08:38,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:38,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-22 00:08:38,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:38,771 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:38,771 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328788581] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:38,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:08:38,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2021-05-22 00:08:38,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204981747] [2021-05-22 00:08:38,772 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-22 00:08:38,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:38,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-22 00:08:38,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2021-05-22 00:08:38,773 INFO L87 Difference]: Start difference. First operand 15582 states and 58761 transitions. Second operand has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 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) [2021-05-22 00:08:39,087 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2021-05-22 00:08:41,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:41,804 INFO L93 Difference]: Finished difference Result 41662 states and 149209 transitions. [2021-05-22 00:08:41,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-05-22 00:08:41,805 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 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 70 [2021-05-22 00:08:41,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:41,885 INFO L225 Difference]: With dead ends: 41662 [2021-05-22 00:08:41,886 INFO L226 Difference]: Without dead ends: 35338 [2021-05-22 00:08:41,888 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3344 ImplicationChecksByTransitivity, 1935.7ms TimeCoverageRelationStatistics Valid=1471, Invalid=9241, Unknown=0, NotChecked=0, Total=10712 [2021-05-22 00:08:41,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35338 states. [2021-05-22 00:08:42,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35338 to 15514. [2021-05-22 00:08:42,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15514 states, 15512 states have (on average 3.753545642083548) internal successors, (58225), 15513 states have internal predecessors, (58225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:42,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15514 states to 15514 states and 58225 transitions. [2021-05-22 00:08:42,325 INFO L78 Accepts]: Start accepts. Automaton has 15514 states and 58225 transitions. Word has length 70 [2021-05-22 00:08:42,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:42,325 INFO L482 AbstractCegarLoop]: Abstraction has 15514 states and 58225 transitions. [2021-05-22 00:08:42,326 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 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) [2021-05-22 00:08:42,326 INFO L276 IsEmpty]: Start isEmpty. Operand 15514 states and 58225 transitions. [2021-05-22 00:08:42,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-05-22 00:08:42,339 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:42,339 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:42,550 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:42,551 INFO L430 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:42,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:42,551 INFO L82 PathProgramCache]: Analyzing trace with hash 152480955, now seen corresponding path program 2 times [2021-05-22 00:08:42,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:42,552 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747438759] [2021-05-22 00:08:42,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:42,688 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-22 00:08:42,689 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:42,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747438759] [2021-05-22 00:08:42,689 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747438759] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:42,689 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646584527] [2021-05-22 00:08:42,689 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 [2021-05-22 00:08:42,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-05-22 00:08:42,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:08:42,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-22 00:08:42,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:43,271 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-05-22 00:08:43,272 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646584527] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:08:43,272 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-22 00:08:43,272 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 23 [2021-05-22 00:08:43,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335431866] [2021-05-22 00:08:43,272 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-22 00:08:43,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:43,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-22 00:08:43,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2021-05-22 00:08:43,273 INFO L87 Difference]: Start difference. First operand 15514 states and 58225 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:43,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:43,882 INFO L93 Difference]: Finished difference Result 27386 states and 98741 transitions. [2021-05-22 00:08:43,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-22 00:08:43,883 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 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 70 [2021-05-22 00:08:43,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:43,946 INFO L225 Difference]: With dead ends: 27386 [2021-05-22 00:08:43,946 INFO L226 Difference]: Without dead ends: 23700 [2021-05-22 00:08:43,949 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 457.5ms TimeCoverageRelationStatistics Valid=230, Invalid=1102, Unknown=0, NotChecked=0, Total=1332 [2021-05-22 00:08:44,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23700 states. [2021-05-22 00:08:44,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23700 to 11712. [2021-05-22 00:08:44,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11712 states, 11710 states have (on average 3.760546541417592) internal successors, (44036), 11711 states have internal predecessors, (44036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:44,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11712 states to 11712 states and 44036 transitions. [2021-05-22 00:08:44,486 INFO L78 Accepts]: Start accepts. Automaton has 11712 states and 44036 transitions. Word has length 70 [2021-05-22 00:08:44,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:44,486 INFO L482 AbstractCegarLoop]: Abstraction has 11712 states and 44036 transitions. [2021-05-22 00:08:44,486 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:44,486 INFO L276 IsEmpty]: Start isEmpty. Operand 11712 states and 44036 transitions. [2021-05-22 00:08:44,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-05-22 00:08:44,498 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:44,498 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:44,700 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:44,701 INFO L430 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:44,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:44,701 INFO L82 PathProgramCache]: Analyzing trace with hash -82532737, now seen corresponding path program 1 times [2021-05-22 00:08:44,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:44,701 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635333904] [2021-05-22 00:08:44,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:44,817 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:44,817 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:44,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635333904] [2021-05-22 00:08:44,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635333904] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:44,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568993492] [2021-05-22 00:08:44,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-05-22 00:08:44,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:44,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-22 00:08:44,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:45,216 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:45,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568993492] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:45,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:08:45,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2021-05-22 00:08:45,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074663509] [2021-05-22 00:08:45,217 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-22 00:08:45,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:45,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-22 00:08:45,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2021-05-22 00:08:45,219 INFO L87 Difference]: Start difference. First operand 11712 states and 44036 transitions. Second operand has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 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) [2021-05-22 00:08:47,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:47,103 INFO L93 Difference]: Finished difference Result 29984 states and 107172 transitions. [2021-05-22 00:08:47,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-05-22 00:08:47,103 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 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 70 [2021-05-22 00:08:47,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:47,149 INFO L225 Difference]: With dead ends: 29984 [2021-05-22 00:08:47,149 INFO L226 Difference]: Without dead ends: 22252 [2021-05-22 00:08:47,151 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2493 ImplicationChecksByTransitivity, 1145.2ms TimeCoverageRelationStatistics Valid=1170, Invalid=6662, Unknown=0, NotChecked=0, Total=7832 [2021-05-22 00:08:47,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22252 states. [2021-05-22 00:08:47,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22252 to 12316. [2021-05-22 00:08:47,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12316 states, 12314 states have (on average 3.7281143414000324) internal successors, (45908), 12315 states have internal predecessors, (45908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:47,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12316 states to 12316 states and 45908 transitions. [2021-05-22 00:08:47,445 INFO L78 Accepts]: Start accepts. Automaton has 12316 states and 45908 transitions. Word has length 70 [2021-05-22 00:08:47,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:47,445 INFO L482 AbstractCegarLoop]: Abstraction has 12316 states and 45908 transitions. [2021-05-22 00:08:47,445 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.357142857142857) internal successors, (122), 28 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) [2021-05-22 00:08:47,445 INFO L276 IsEmpty]: Start isEmpty. Operand 12316 states and 45908 transitions. [2021-05-22 00:08:47,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-05-22 00:08:47,458 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:47,458 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:47,664 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:47,665 INFO L430 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:47,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:47,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1377004195, now seen corresponding path program 2 times [2021-05-22 00:08:47,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:47,665 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517433039] [2021-05-22 00:08:47,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:47,768 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-22 00:08:47,768 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:47,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517433039] [2021-05-22 00:08:47,769 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517433039] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:47,769 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412418755] [2021-05-22 00:08:47,769 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 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 [2021-05-22 00:08:47,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-05-22 00:08:47,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:08:47,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-22 00:08:47,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:48,130 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-05-22 00:08:48,130 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412418755] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:08:48,130 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-22 00:08:48,130 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 23 [2021-05-22 00:08:48,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589994608] [2021-05-22 00:08:48,132 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-22 00:08:48,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:48,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-22 00:08:48,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2021-05-22 00:08:48,132 INFO L87 Difference]: Start difference. First operand 12316 states and 45908 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:48,341 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 16 [2021-05-22 00:08:48,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:48,712 INFO L93 Difference]: Finished difference Result 19512 states and 69548 transitions. [2021-05-22 00:08:48,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-22 00:08:48,713 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 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 70 [2021-05-22 00:08:48,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:48,755 INFO L225 Difference]: With dead ends: 19512 [2021-05-22 00:08:48,755 INFO L226 Difference]: Without dead ends: 16168 [2021-05-22 00:08:48,756 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 532.8ms TimeCoverageRelationStatistics Valid=208, Invalid=1052, Unknown=0, NotChecked=0, Total=1260 [2021-05-22 00:08:48,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16168 states. [2021-05-22 00:08:48,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16168 to 9960. [2021-05-22 00:08:48,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9960 states, 9958 states have (on average 3.694115284193613) internal successors, (36786), 9959 states have internal predecessors, (36786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:48,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9960 states to 9960 states and 36786 transitions. [2021-05-22 00:08:48,999 INFO L78 Accepts]: Start accepts. Automaton has 9960 states and 36786 transitions. Word has length 70 [2021-05-22 00:08:49,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:49,000 INFO L482 AbstractCegarLoop]: Abstraction has 9960 states and 36786 transitions. [2021-05-22 00:08:49,000 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:49,000 INFO L276 IsEmpty]: Start isEmpty. Operand 9960 states and 36786 transitions. [2021-05-22 00:08:49,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-22 00:08:49,014 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:49,014 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:49,214 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-05-22 00:08:49,214 INFO L430 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:49,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:49,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1557602563, now seen corresponding path program 1 times [2021-05-22 00:08:49,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:49,215 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633690205] [2021-05-22 00:08:49,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:49,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:49,348 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-22 00:08:49,348 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:49,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633690205] [2021-05-22 00:08:49,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633690205] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:49,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069856159] [2021-05-22 00:08:49,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:49,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:49,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-22 00:08:49,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:49,799 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:49,799 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069856159] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:49,799 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:08:49,799 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 31 [2021-05-22 00:08:49,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605911374] [2021-05-22 00:08:49,800 INFO L462 AbstractCegarLoop]: Interpolant automaton has 31 states [2021-05-22 00:08:49,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:49,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-05-22 00:08:49,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=833, Unknown=0, NotChecked=0, Total=930 [2021-05-22 00:08:49,801 INFO L87 Difference]: Start difference. First operand 9960 states and 36786 transitions. Second operand has 31 states, 31 states have (on average 4.161290322580645) internal successors, (129), 31 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:54,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:54,553 INFO L93 Difference]: Finished difference Result 29316 states and 102106 transitions. [2021-05-22 00:08:54,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2021-05-22 00:08:54,554 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.161290322580645) internal successors, (129), 31 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-05-22 00:08:54,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:54,653 INFO L225 Difference]: With dead ends: 29316 [2021-05-22 00:08:54,653 INFO L226 Difference]: Without dead ends: 23622 [2021-05-22 00:08:54,657 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9983 ImplicationChecksByTransitivity, 3549.1ms TimeCoverageRelationStatistics Valid=3399, Invalid=24657, Unknown=0, NotChecked=0, Total=28056 [2021-05-22 00:08:54,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23622 states. [2021-05-22 00:08:54,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23622 to 9466. [2021-05-22 00:08:54,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9466 states, 9464 states have (on average 3.6537404902789516) internal successors, (34579), 9465 states have internal predecessors, (34579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:54,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9466 states to 9466 states and 34579 transitions. [2021-05-22 00:08:54,879 INFO L78 Accepts]: Start accepts. Automaton has 9466 states and 34579 transitions. Word has length 74 [2021-05-22 00:08:54,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:54,879 INFO L482 AbstractCegarLoop]: Abstraction has 9466 states and 34579 transitions. [2021-05-22 00:08:54,879 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 31 states, 31 states have (on average 4.161290322580645) internal successors, (129), 31 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:54,879 INFO L276 IsEmpty]: Start isEmpty. Operand 9466 states and 34579 transitions. [2021-05-22 00:08:54,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-22 00:08:54,891 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:54,891 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:55,093 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:55,093 INFO L430 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:55,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:55,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1442893275, now seen corresponding path program 2 times [2021-05-22 00:08:55,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:55,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398243377] [2021-05-22 00:08:55,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:55,246 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:55,246 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:55,246 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398243377] [2021-05-22 00:08:55,247 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398243377] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:55,247 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009627498] [2021-05-22 00:08:55,247 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:55,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-22 00:08:55,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:08:55,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-22 00:08:55,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:55,717 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:55,717 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009627498] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:55,717 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:08:55,718 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-05-22 00:08:55,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579810079] [2021-05-22 00:08:55,718 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-22 00:08:55,718 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:55,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-22 00:08:55,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=893, Unknown=0, NotChecked=0, Total=992 [2021-05-22 00:08:55,719 INFO L87 Difference]: Start difference. First operand 9466 states and 34579 transitions. Second operand has 32 states, 32 states have (on average 4.0625) internal successors, (130), 32 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) [2021-05-22 00:08:58,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:08:58,882 INFO L93 Difference]: Finished difference Result 23508 states and 83268 transitions. [2021-05-22 00:08:58,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 98 states. [2021-05-22 00:08:58,882 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.0625) internal successors, (130), 32 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 74 [2021-05-22 00:08:58,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:08:58,917 INFO L225 Difference]: With dead ends: 23508 [2021-05-22 00:08:58,917 INFO L226 Difference]: Without dead ends: 16912 [2021-05-22 00:08:58,919 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4621 ImplicationChecksByTransitivity, 2020.8ms TimeCoverageRelationStatistics Valid=1998, Invalid=13008, Unknown=0, NotChecked=0, Total=15006 [2021-05-22 00:08:58,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16912 states. [2021-05-22 00:08:59,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16912 to 7686. [2021-05-22 00:08:59,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7686 states, 7684 states have (on average 3.601379489849037) internal successors, (27673), 7685 states have internal predecessors, (27673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:08:59,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7686 states to 7686 states and 27673 transitions. [2021-05-22 00:08:59,198 INFO L78 Accepts]: Start accepts. Automaton has 7686 states and 27673 transitions. Word has length 74 [2021-05-22 00:08:59,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:08:59,198 INFO L482 AbstractCegarLoop]: Abstraction has 7686 states and 27673 transitions. [2021-05-22 00:08:59,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.0625) internal successors, (130), 32 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) [2021-05-22 00:08:59,198 INFO L276 IsEmpty]: Start isEmpty. Operand 7686 states and 27673 transitions. [2021-05-22 00:08:59,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-22 00:08:59,207 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:08:59,207 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:08:59,408 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-05-22 00:08:59,408 INFO L430 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:08:59,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:08:59,408 INFO L82 PathProgramCache]: Analyzing trace with hash -784704609, now seen corresponding path program 3 times [2021-05-22 00:08:59,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:08:59,408 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295556378] [2021-05-22 00:08:59,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:08:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:08:59,531 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:08:59,531 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:08:59,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295556378] [2021-05-22 00:08:59,531 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295556378] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:59,531 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995642022] [2021-05-22 00:08:59,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:08:59,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-05-22 00:08:59,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:08:59,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-22 00:08:59,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:08:59,945 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-05-22 00:08:59,945 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995642022] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:08:59,945 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:08:59,945 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 28 [2021-05-22 00:08:59,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443524913] [2021-05-22 00:08:59,946 INFO L462 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-22 00:08:59,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:08:59,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-22 00:08:59,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2021-05-22 00:08:59,946 INFO L87 Difference]: Start difference. First operand 7686 states and 27673 transitions. Second operand has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 28 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:09:03,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:09:03,353 INFO L93 Difference]: Finished difference Result 19606 states and 68345 transitions. [2021-05-22 00:09:03,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2021-05-22 00:09:03,353 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 28 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-05-22 00:09:03,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:09:03,384 INFO L225 Difference]: With dead ends: 19606 [2021-05-22 00:09:03,384 INFO L226 Difference]: Without dead ends: 14878 [2021-05-22 00:09:03,385 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5652 ImplicationChecksByTransitivity, 2740.9ms TimeCoverageRelationStatistics Valid=2135, Invalid=14377, Unknown=0, NotChecked=0, Total=16512 [2021-05-22 00:09:03,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14878 states. [2021-05-22 00:09:03,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14878 to 6730. [2021-05-22 00:09:03,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6730 states, 6728 states have (on average 3.5917063020214033) internal successors, (24165), 6729 states have internal predecessors, (24165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:09:03,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6730 states to 6730 states and 24165 transitions. [2021-05-22 00:09:03,550 INFO L78 Accepts]: Start accepts. Automaton has 6730 states and 24165 transitions. Word has length 74 [2021-05-22 00:09:03,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:09:03,550 INFO L482 AbstractCegarLoop]: Abstraction has 6730 states and 24165 transitions. [2021-05-22 00:09:03,550 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 4.464285714285714) internal successors, (125), 28 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:09:03,551 INFO L276 IsEmpty]: Start isEmpty. Operand 6730 states and 24165 transitions. [2021-05-22 00:09:03,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-22 00:09:03,560 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:09:03,560 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:09:03,760 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:09:03,761 INFO L430 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:09:03,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:09:03,761 INFO L82 PathProgramCache]: Analyzing trace with hash -41418819, now seen corresponding path program 4 times [2021-05-22 00:09:03,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:09:03,761 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977728452] [2021-05-22 00:09:03,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:09:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:09:03,893 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:09:03,893 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:09:03,893 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977728452] [2021-05-22 00:09:03,894 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977728452] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:09:03,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866853095] [2021-05-22 00:09:03,894 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:09:03,968 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-22 00:09:03,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:09:03,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-22 00:09:03,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:09:04,335 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:09:04,336 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866853095] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:09:04,336 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:09:04,336 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-05-22 00:09:04,336 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24180649] [2021-05-22 00:09:04,336 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-22 00:09:04,336 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:09:04,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-22 00:09:04,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992 [2021-05-22 00:09:04,337 INFO L87 Difference]: Start difference. First operand 6730 states and 24165 transitions. Second operand has 32 states, 32 states have (on average 4.0625) internal successors, (130), 32 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) [2021-05-22 00:09:06,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:09:06,530 INFO L93 Difference]: Finished difference Result 15062 states and 52521 transitions. [2021-05-22 00:09:06,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-05-22 00:09:06,530 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.0625) internal successors, (130), 32 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 74 [2021-05-22 00:09:06,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:09:06,549 INFO L225 Difference]: With dead ends: 15062 [2021-05-22 00:09:06,549 INFO L226 Difference]: Without dead ends: 10028 [2021-05-22 00:09:06,550 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4227 ImplicationChecksByTransitivity, 1668.0ms TimeCoverageRelationStatistics Valid=1890, Invalid=11220, Unknown=0, NotChecked=0, Total=13110 [2021-05-22 00:09:06,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10028 states. [2021-05-22 00:09:06,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10028 to 5296. [2021-05-22 00:09:06,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5296 states, 5294 states have (on average 3.5255005666792596) internal successors, (18664), 5295 states have internal predecessors, (18664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:09:06,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5296 states to 5296 states and 18664 transitions. [2021-05-22 00:09:06,667 INFO L78 Accepts]: Start accepts. Automaton has 5296 states and 18664 transitions. Word has length 74 [2021-05-22 00:09:06,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:09:06,716 INFO L482 AbstractCegarLoop]: Abstraction has 5296 states and 18664 transitions. [2021-05-22 00:09:06,717 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.0625) internal successors, (130), 32 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) [2021-05-22 00:09:06,717 INFO L276 IsEmpty]: Start isEmpty. Operand 5296 states and 18664 transitions. [2021-05-22 00:09:06,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-22 00:09:06,723 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:09:06,723 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:09:06,924 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:09:06,925 INFO L430 AbstractCegarLoop]: === Iteration 15 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:09:06,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:09:06,925 INFO L82 PathProgramCache]: Analyzing trace with hash 2120943387, now seen corresponding path program 5 times [2021-05-22 00:09:06,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:09:06,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836697957] [2021-05-22 00:09:06,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:09:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:09:07,066 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:09:07,067 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:09:07,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836697957] [2021-05-22 00:09:07,067 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836697957] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:09:07,067 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654918377] [2021-05-22 00:09:07,067 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:09:07,163 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-05-22 00:09:07,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:09:07,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-22 00:09:07,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:09:07,464 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:09:07,465 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654918377] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:09:07,465 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:09:07,465 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-05-22 00:09:07,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115849747] [2021-05-22 00:09:07,465 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-22 00:09:07,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:09:07,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-22 00:09:07,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=868, Unknown=0, NotChecked=0, Total=992 [2021-05-22 00:09:07,466 INFO L87 Difference]: Start difference. First operand 5296 states and 18664 transitions. Second operand has 32 states, 32 states have (on average 4.0625) internal successors, (130), 32 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) [2021-05-22 00:09:08,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:09:08,458 INFO L93 Difference]: Finished difference Result 9196 states and 31438 transitions. [2021-05-22 00:09:08,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-05-22 00:09:08,458 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.0625) internal successors, (130), 32 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 74 [2021-05-22 00:09:08,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:09:08,470 INFO L225 Difference]: With dead ends: 9196 [2021-05-22 00:09:08,470 INFO L226 Difference]: Without dead ends: 5960 [2021-05-22 00:09:08,471 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1394 ImplicationChecksByTransitivity, 849.5ms TimeCoverageRelationStatistics Valid=900, Invalid=4356, Unknown=0, NotChecked=0, Total=5256 [2021-05-22 00:09:08,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5960 states. [2021-05-22 00:09:08,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5960 to 5120. [2021-05-22 00:09:08,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5120 states, 5118 states have (on average 3.4482219617037906) internal successors, (17648), 5119 states have internal predecessors, (17648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:09:08,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5120 states to 5120 states and 17648 transitions. [2021-05-22 00:09:08,555 INFO L78 Accepts]: Start accepts. Automaton has 5120 states and 17648 transitions. Word has length 74 [2021-05-22 00:09:08,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:09:08,556 INFO L482 AbstractCegarLoop]: Abstraction has 5120 states and 17648 transitions. [2021-05-22 00:09:08,556 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.0625) internal successors, (130), 32 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) [2021-05-22 00:09:08,556 INFO L276 IsEmpty]: Start isEmpty. Operand 5120 states and 17648 transitions. [2021-05-22 00:09:08,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-22 00:09:08,562 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:09:08,562 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:09:08,762 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:09:08,762 INFO L430 AbstractCegarLoop]: === Iteration 16 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:09:08,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:09:08,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1512025883, now seen corresponding path program 6 times [2021-05-22 00:09:08,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:09:08,763 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406034520] [2021-05-22 00:09:08,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:09:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:09:08,902 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:09:08,903 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:09:08,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406034520] [2021-05-22 00:09:08,903 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406034520] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:09:08,903 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694263976] [2021-05-22 00:09:08,903 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:09:08,987 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-05-22 00:09:08,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:09:08,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-22 00:09:08,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:09:09,318 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-05-22 00:09:09,318 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694263976] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:09:09,318 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-22 00:09:09,318 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [17] total 29 [2021-05-22 00:09:09,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656083621] [2021-05-22 00:09:09,318 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-22 00:09:09,318 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:09:09,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-22 00:09:09,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=712, Unknown=0, NotChecked=0, Total=812 [2021-05-22 00:09:09,319 INFO L87 Difference]: Start difference. First operand 5120 states and 17648 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 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) [2021-05-22 00:09:09,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:09:09,716 INFO L93 Difference]: Finished difference Result 5656 states and 19364 transitions. [2021-05-22 00:09:09,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-22 00:09:09,717 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 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 74 [2021-05-22 00:09:09,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:09:09,720 INFO L225 Difference]: With dead ends: 5656 [2021-05-22 00:09:09,720 INFO L226 Difference]: Without dead ends: 1804 [2021-05-22 00:09:09,720 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 549.8ms TimeCoverageRelationStatistics Valid=298, Invalid=1594, Unknown=0, NotChecked=0, Total=1892 [2021-05-22 00:09:09,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1804 states. [2021-05-22 00:09:09,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1804 to 1804. [2021-05-22 00:09:09,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1802 states have (on average 3.1986681465038846) internal successors, (5764), 1803 states have internal predecessors, (5764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:09:09,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 5764 transitions. [2021-05-22 00:09:09,745 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 5764 transitions. Word has length 74 [2021-05-22 00:09:09,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:09:09,745 INFO L482 AbstractCegarLoop]: Abstraction has 1804 states and 5764 transitions. [2021-05-22 00:09:09,745 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 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) [2021-05-22 00:09:09,745 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 5764 transitions. [2021-05-22 00:09:09,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-05-22 00:09:09,747 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:09:09,747 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-05-22 00:09:09,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2021-05-22 00:09:09,949 INFO L430 AbstractCegarLoop]: === Iteration 17 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:09:09,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:09:09,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1687058695, now seen corresponding path program 7 times [2021-05-22 00:09:09,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:09:09,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497236141] [2021-05-22 00:09:09,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:09:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:09:10,087 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-05-22 00:09:10,087 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:09:10,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497236141] [2021-05-22 00:09:10,088 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497236141] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:09:10,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893900298] [2021-05-22 00:09:10,088 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:09:10,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:09:10,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-22 00:09:10,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:09:10,540 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:09:10,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893900298] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:09:10,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:09:10,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 26 [2021-05-22 00:09:10,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021362114] [2021-05-22 00:09:10,541 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-22 00:09:10,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:09:10,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-22 00:09:10,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2021-05-22 00:09:10,541 INFO L87 Difference]: Start difference. First operand 1804 states and 5764 transitions. Second operand has 26 states, 26 states have (on average 5.038461538461538) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:09:11,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:09:11,254 INFO L93 Difference]: Finished difference Result 3282 states and 10559 transitions. [2021-05-22 00:09:11,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-22 00:09:11,255 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.038461538461538) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 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 78 [2021-05-22 00:09:11,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:09:11,257 INFO L225 Difference]: With dead ends: 3282 [2021-05-22 00:09:11,258 INFO L226 Difference]: Without dead ends: 1798 [2021-05-22 00:09:11,258 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 770.0ms TimeCoverageRelationStatistics Valid=473, Invalid=2077, Unknown=0, NotChecked=0, Total=2550 [2021-05-22 00:09:11,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1798 states. [2021-05-22 00:09:11,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1798 to 1798. [2021-05-22 00:09:11,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1796 states have (on average 3.201002227171492) internal successors, (5749), 1797 states have internal predecessors, (5749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:09:11,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 5749 transitions. [2021-05-22 00:09:11,281 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 5749 transitions. Word has length 78 [2021-05-22 00:09:11,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:09:11,281 INFO L482 AbstractCegarLoop]: Abstraction has 1798 states and 5749 transitions. [2021-05-22 00:09:11,281 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.038461538461538) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:09:11,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 5749 transitions. [2021-05-22 00:09:11,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-05-22 00:09:11,283 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:09:11,284 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-05-22 00:09:11,484 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-05-22 00:09:11,484 INFO L430 AbstractCegarLoop]: === Iteration 18 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:09:11,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:09:11,484 INFO L82 PathProgramCache]: Analyzing trace with hash -1674866831, now seen corresponding path program 8 times [2021-05-22 00:09:11,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:09:11,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193979689] [2021-05-22 00:09:11,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:09:11,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:09:11,592 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-05-22 00:09:11,592 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:09:11,592 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193979689] [2021-05-22 00:09:11,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193979689] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:09:11,593 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259621733] [2021-05-22 00:09:11,593 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:09:11,701 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-22 00:09:11,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:09:11,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-22 00:09:11,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:09:11,992 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-05-22 00:09:11,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259621733] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:09:11,993 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:09:11,993 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-05-22 00:09:11,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715837928] [2021-05-22 00:09:11,993 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-22 00:09:11,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:09:11,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-22 00:09:11,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2021-05-22 00:09:11,994 INFO L87 Difference]: Start difference. First operand 1798 states and 5749 transitions. Second operand has 24 states, 24 states have (on average 5.166666666666667) internal successors, (124), 24 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:09:12,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:09:12,506 INFO L93 Difference]: Finished difference Result 3274 states and 10541 transitions. [2021-05-22 00:09:12,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-22 00:09:12,506 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.166666666666667) internal successors, (124), 24 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-05-22 00:09:12,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:09:12,509 INFO L225 Difference]: With dead ends: 3274 [2021-05-22 00:09:12,509 INFO L226 Difference]: Without dead ends: 1786 [2021-05-22 00:09:12,509 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 468 ImplicationChecksByTransitivity, 518.8ms TimeCoverageRelationStatistics Valid=361, Invalid=1709, Unknown=0, NotChecked=0, Total=2070 [2021-05-22 00:09:12,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1786 states. [2021-05-22 00:09:12,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1786 to 1786. [2021-05-22 00:09:12,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1786 states, 1784 states have (on average 3.2057174887892375) internal successors, (5719), 1785 states have internal predecessors, (5719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:09:12,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1786 states to 1786 states and 5719 transitions. [2021-05-22 00:09:12,528 INFO L78 Accepts]: Start accepts. Automaton has 1786 states and 5719 transitions. Word has length 78 [2021-05-22 00:09:12,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:09:12,528 INFO L482 AbstractCegarLoop]: Abstraction has 1786 states and 5719 transitions. [2021-05-22 00:09:12,528 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 5.166666666666667) internal successors, (124), 24 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:09:12,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1786 states and 5719 transitions. [2021-05-22 00:09:12,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-05-22 00:09:12,529 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:09:12,529 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-05-22 00:09:12,729 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:09:12,730 INFO L430 AbstractCegarLoop]: === Iteration 19 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:09:12,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:09:12,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1506067179, now seen corresponding path program 9 times [2021-05-22 00:09:12,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:09:12,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481632377] [2021-05-22 00:09:12,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:09:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:09:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-05-22 00:09:12,837 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:09:12,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481632377] [2021-05-22 00:09:12,837 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481632377] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:09:12,837 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934250803] [2021-05-22 00:09:12,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:09:12,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-22 00:09:12,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:09:12,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-22 00:09:12,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:09:13,206 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:09:13,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934250803] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:09:13,207 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:09:13,207 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 26 [2021-05-22 00:09:13,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405394258] [2021-05-22 00:09:13,207 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-22 00:09:13,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:09:13,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-22 00:09:13,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2021-05-22 00:09:13,208 INFO L87 Difference]: Start difference. First operand 1786 states and 5719 transitions. Second operand has 26 states, 26 states have (on average 5.038461538461538) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:09:13,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:09:13,849 INFO L93 Difference]: Finished difference Result 1546 states and 4895 transitions. [2021-05-22 00:09:13,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-05-22 00:09:13,849 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.038461538461538) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 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 78 [2021-05-22 00:09:13,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:09:13,849 INFO L225 Difference]: With dead ends: 1546 [2021-05-22 00:09:13,850 INFO L226 Difference]: Without dead ends: 0 [2021-05-22 00:09:13,850 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 508 ImplicationChecksByTransitivity, 692.6ms TimeCoverageRelationStatistics Valid=440, Invalid=2010, Unknown=0, NotChecked=0, Total=2450 [2021-05-22 00:09:13,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-22 00:09:13,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-22 00:09:13,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:09:13,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-22 00:09:13,850 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 78 [2021-05-22 00:09:13,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:09:13,850 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-22 00:09:13,850 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 5.038461538461538) internal successors, (131), 26 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:09:13,851 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-22 00:09:13,851 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-22 00:09:14,051 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable65 [2021-05-22 00:09:14,051 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-05-22 00:09:14,051 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-05-22 00:09:14,052 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 00:09:14,052 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 00:09:14,052 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 00:09:14,052 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 00:09:14,052 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 00:09:14,052 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 00:09:14,052 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 00:09:14,052 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-22 00:09:14,053 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 112 places, 103 transitions, 248 flow [2021-05-22 00:09:22,128 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 48789 states, 48779 states have (on average 4.35187273211833) internal successors, (212280), 48788 states have internal predecessors, (212280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:09:22,199 INFO L276 IsEmpty]: Start isEmpty. Operand has 48789 states, 48779 states have (on average 4.35187273211833) internal successors, (212280), 48788 states have internal predecessors, (212280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:09:22,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-22 00:09:22,232 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:09:22,232 INFO L521 BasicCegarLoop]: trace histogram [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] [2021-05-22 00:09:22,232 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-05-22 00:09:22,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:09:22,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1403611569, now seen corresponding path program 1 times [2021-05-22 00:09:22,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:09:22,232 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547820252] [2021-05-22 00:09:22,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:09:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-22 00:09:22,251 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-22 00:09:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-22 00:09:22,262 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-22 00:09:22,271 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-22 00:09:22,271 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-05-22 00:09:22,271 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-05-22 00:09:22,271 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-05-22 00:09:22,272 WARN L242 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2021-05-22 00:09:22,272 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2021-05-22 00:09:22,288 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,288 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,288 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,288 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,288 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,288 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,288 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,288 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,288 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,288 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,289 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,289 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,289 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,289 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,289 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,289 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,289 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,289 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,289 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,289 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,289 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,289 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,290 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,290 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,290 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,290 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,290 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,290 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,290 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,290 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,290 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,290 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,290 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,290 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,290 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,291 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,291 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,291 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,291 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,291 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,291 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,291 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,291 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,291 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,291 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,291 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,291 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,291 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,292 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,292 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,292 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,292 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,292 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,292 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,292 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,292 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,292 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,292 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,292 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,293 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,293 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,293 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,293 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,293 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,293 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,293 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,293 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,293 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,293 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,293 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,293 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,293 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,294 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,294 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,294 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,294 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,295 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,295 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,295 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,295 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,295 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,295 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,295 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,295 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,295 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,295 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,296 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,296 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,296 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,296 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,296 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,296 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,296 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,296 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,296 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,296 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,300 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,300 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,300 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,300 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,301 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,301 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,301 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,301 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,301 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,301 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,301 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,301 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,301 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,301 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,301 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,301 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,302 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,302 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,303 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,303 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,303 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,303 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,303 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,303 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,303 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,303 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,303 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,303 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,303 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,303 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,303 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,304 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,304 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,304 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,304 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,304 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,304 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,304 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,304 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,304 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,304 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,305 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,306 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,308 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,308 WARN L313 ript$VariableManager]: TermVariabe thr2Thread1of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,310 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,310 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,310 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,310 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,310 WARN L313 ript$VariableManager]: TermVariabe thr2Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,312 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,312 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,312 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,312 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,313 WARN L313 ript$VariableManager]: TermVariabe thr2Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,314 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,314 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,314 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,314 WARN L313 ript$VariableManager]: TermVariabe thr2Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,314 WARN L313 ript$VariableManager]: TermVariabe |thr2Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,315 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,315 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,315 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,316 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,316 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,316 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,317 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,317 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,317 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,317 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,317 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,317 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,319 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,319 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,319 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,319 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,319 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,319 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,320 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,320 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,320 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,321 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,321 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork1___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,321 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-22 00:09:22,322 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-22 00:09:22,322 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-05-22 00:09:22,322 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 00:09:22,323 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 00:09:22,323 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 00:09:22,323 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 00:09:22,323 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 00:09:22,323 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 00:09:22,323 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 00:09:22,323 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-22 00:09:22,325 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 132 places, 120 transitions, 304 flow [2021-05-22 00:13:22,138 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 292869 states, 292857 states have (on average 5.1834171626425185) internal successors, (1518000), 292868 states have internal predecessors, (1518000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:13:22,495 INFO L276 IsEmpty]: Start isEmpty. Operand has 292869 states, 292857 states have (on average 5.1834171626425185) internal successors, (1518000), 292868 states have internal predecessors, (1518000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:13:22,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-22 00:13:22,495 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:13:22,496 INFO L521 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] [2021-05-22 00:13:22,496 INFO L430 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:13:22,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:13:22,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1908114173, now seen corresponding path program 1 times [2021-05-22 00:13:22,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:13:22,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060063503] [2021-05-22 00:13:22,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:13:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:13:22,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:13:22,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:13:22,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060063503] [2021-05-22 00:13:22,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060063503] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:13:22,561 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:13:22,561 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-22 00:13:22,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272300539] [2021-05-22 00:13:22,562 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-22 00:13:22,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:13:22,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-22 00:13:22,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-22 00:13:22,951 INFO L87 Difference]: Start difference. First operand has 292869 states, 292857 states have (on average 5.1834171626425185) internal successors, (1518000), 292868 states have internal predecessors, (1518000), 0 states have call successors, (0), 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 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:13:27,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:13:27,818 INFO L93 Difference]: Finished difference Result 365261 states and 1798625 transitions. [2021-05-22 00:13:27,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-22 00:13:27,819 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2021-05-22 00:13:27,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:13:29,238 INFO L225 Difference]: With dead ends: 365261 [2021-05-22 00:13:29,238 INFO L226 Difference]: Without dead ends: 173040 [2021-05-22 00:13:29,238 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 96.6ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-05-22 00:13:32,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173040 states. [2021-05-22 00:13:35,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173040 to 173040. [2021-05-22 00:13:36,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173040 states, 173035 states have (on average 4.865917299968214) internal successors, (841974), 173039 states have internal predecessors, (841974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:13:38,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173040 states to 173040 states and 841974 transitions. [2021-05-22 00:13:38,072 INFO L78 Accepts]: Start accepts. Automaton has 173040 states and 841974 transitions. Word has length 34 [2021-05-22 00:13:38,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:13:38,072 INFO L482 AbstractCegarLoop]: Abstraction has 173040 states and 841974 transitions. [2021-05-22 00:13:38,072 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 8 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:13:38,072 INFO L276 IsEmpty]: Start isEmpty. Operand 173040 states and 841974 transitions. [2021-05-22 00:13:38,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-05-22 00:13:38,073 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:13:38,073 INFO L521 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] [2021-05-22 00:13:38,073 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-05-22 00:13:38,073 INFO L430 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:13:38,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:13:38,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1086704383, now seen corresponding path program 1 times [2021-05-22 00:13:38,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:13:38,074 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007682097] [2021-05-22 00:13:38,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:13:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:13:38,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:13:38,132 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:13:38,132 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007682097] [2021-05-22 00:13:38,132 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007682097] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:13:38,132 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-22 00:13:38,133 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-05-22 00:13:38,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48946200] [2021-05-22 00:13:38,133 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-22 00:13:38,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:13:38,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-22 00:13:38,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-05-22 00:13:38,133 INFO L87 Difference]: Start difference. First operand 173040 states and 841974 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:13:42,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:13:42,095 INFO L93 Difference]: Finished difference Result 321012 states and 1505068 transitions. [2021-05-22 00:13:42,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-22 00:13:42,095 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2021-05-22 00:13:42,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:13:44,954 INFO L225 Difference]: With dead ends: 321012 [2021-05-22 00:13:44,954 INFO L226 Difference]: Without dead ends: 271144 [2021-05-22 00:13:44,955 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 98.3ms TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-05-22 00:13:49,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271144 states. [2021-05-22 00:13:54,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271144 to 175908. [2021-05-22 00:13:54,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175908 states, 175904 states have (on average 4.800391122430416) internal successors, (844408), 175907 states have internal predecessors, (844408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:13:56,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175908 states to 175908 states and 844408 transitions. [2021-05-22 00:13:56,673 INFO L78 Accepts]: Start accepts. Automaton has 175908 states and 844408 transitions. Word has length 46 [2021-05-22 00:13:56,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:13:56,673 INFO L482 AbstractCegarLoop]: Abstraction has 175908 states and 844408 transitions. [2021-05-22 00:13:56,675 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:13:56,675 INFO L276 IsEmpty]: Start isEmpty. Operand 175908 states and 844408 transitions. [2021-05-22 00:13:56,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-22 00:13:56,677 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:13:56,677 INFO L521 BasicCegarLoop]: trace histogram [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] [2021-05-22 00:13:56,677 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-05-22 00:13:56,678 INFO L430 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:13:56,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:13:56,678 INFO L82 PathProgramCache]: Analyzing trace with hash -327900800, now seen corresponding path program 1 times [2021-05-22 00:13:56,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:13:56,678 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509170845] [2021-05-22 00:13:56,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:13:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:13:56,757 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:13:56,757 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:13:56,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509170845] [2021-05-22 00:13:56,757 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509170845] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:13:56,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303337296] [2021-05-22 00:13:56,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-05-22 00:13:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:13:56,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-22 00:13:56,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:13:56,976 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:13:56,976 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303337296] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:13:56,976 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:13:56,976 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2021-05-22 00:13:56,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056089475] [2021-05-22 00:13:56,976 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-22 00:13:56,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:13:56,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-22 00:13:56,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-05-22 00:13:56,977 INFO L87 Difference]: Start difference. First operand 175908 states and 844408 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:14:00,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:14:00,429 INFO L93 Difference]: Finished difference Result 320548 states and 1488640 transitions. [2021-05-22 00:14:00,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-22 00:14:00,430 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-05-22 00:14:00,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:14:02,450 INFO L225 Difference]: With dead ends: 320548 [2021-05-22 00:14:02,450 INFO L226 Difference]: Without dead ends: 270068 [2021-05-22 00:14:02,451 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 287.1ms TimeCoverageRelationStatistics Valid=215, Invalid=841, Unknown=0, NotChecked=0, Total=1056 [2021-05-22 00:14:05,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270068 states. [2021-05-22 00:14:09,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270068 to 176716. [2021-05-22 00:14:10,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176716 states, 176712 states have (on average 4.7422246366969985) internal successors, (838008), 176715 states have internal predecessors, (838008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:14:11,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176716 states to 176716 states and 838008 transitions. [2021-05-22 00:14:11,716 INFO L78 Accepts]: Start accepts. Automaton has 176716 states and 838008 transitions. Word has length 56 [2021-05-22 00:14:11,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:14:11,716 INFO L482 AbstractCegarLoop]: Abstraction has 176716 states and 838008 transitions. [2021-05-22 00:14:11,716 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 19 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:14:11,716 INFO L276 IsEmpty]: Start isEmpty. Operand 176716 states and 838008 transitions. [2021-05-22 00:14:11,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-22 00:14:11,718 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:14:11,718 INFO L521 BasicCegarLoop]: trace histogram [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] [2021-05-22 00:14:11,918 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:14:11,919 INFO L430 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:14:11,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:14:11,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1990760464, now seen corresponding path program 1 times [2021-05-22 00:14:11,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:14:11,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159458640] [2021-05-22 00:14:11,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:14:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:14:12,013 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:14:12,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:14:12,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159458640] [2021-05-22 00:14:12,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159458640] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:14:12,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687575847] [2021-05-22 00:14:12,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-05-22 00:14:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:14:12,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-22 00:14:12,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:14:12,327 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:14:12,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687575847] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:14:12,327 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:14:12,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2021-05-22 00:14:12,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550481603] [2021-05-22 00:14:12,328 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-22 00:14:12,328 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:14:12,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-22 00:14:12,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2021-05-22 00:14:12,328 INFO L87 Difference]: Start difference. First operand 176716 states and 838008 transitions. Second operand has 24 states, 24 states have (on average 4.25) internal successors, (102), 24 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:14:19,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:14:19,006 INFO L93 Difference]: Finished difference Result 582532 states and 2638312 transitions. [2021-05-22 00:14:19,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-05-22 00:14:19,007 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 4.25) internal successors, (102), 24 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-05-22 00:14:19,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:14:25,443 INFO L225 Difference]: With dead ends: 582532 [2021-05-22 00:14:25,444 INFO L226 Difference]: Without dead ends: 565372 [2021-05-22 00:14:25,444 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 833 ImplicationChecksByTransitivity, 632.3ms TimeCoverageRelationStatistics Valid=629, Invalid=2677, Unknown=0, NotChecked=0, Total=3306 [2021-05-22 00:14:31,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565372 states. [2021-05-22 00:14:39,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565372 to 173892. [2021-05-22 00:14:40,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173892 states, 173888 states have (on average 4.746227456753773) internal successors, (825312), 173891 states have internal predecessors, (825312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:14:41,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173892 states to 173892 states and 825312 transitions. [2021-05-22 00:14:41,593 INFO L78 Accepts]: Start accepts. Automaton has 173892 states and 825312 transitions. Word has length 60 [2021-05-22 00:14:41,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:14:41,593 INFO L482 AbstractCegarLoop]: Abstraction has 173892 states and 825312 transitions. [2021-05-22 00:14:41,593 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 4.25) internal successors, (102), 24 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:14:41,593 INFO L276 IsEmpty]: Start isEmpty. Operand 173892 states and 825312 transitions. [2021-05-22 00:14:41,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-22 00:14:41,595 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:14:41,595 INFO L521 BasicCegarLoop]: trace histogram [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] [2021-05-22 00:14:41,795 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:14:41,796 INFO L430 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:14:41,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:14:41,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1469779694, now seen corresponding path program 2 times [2021-05-22 00:14:41,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:14:41,799 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319553685] [2021-05-22 00:14:41,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:14:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:14:41,894 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:14:41,894 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:14:41,894 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319553685] [2021-05-22 00:14:41,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319553685] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:14:41,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [390405179] [2021-05-22 00:14:41,895 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 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:14:41,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-05-22 00:14:41,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:14:41,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-22 00:14:41,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:14:42,239 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-05-22 00:14:42,239 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [390405179] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:14:42,239 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-22 00:14:42,240 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 23 [2021-05-22 00:14:42,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434760521] [2021-05-22 00:14:42,240 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-22 00:14:42,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:14:42,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-22 00:14:42,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2021-05-22 00:14:42,241 INFO L87 Difference]: Start difference. First operand 173892 states and 825312 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:14:46,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:14:46,958 INFO L93 Difference]: Finished difference Result 403532 states and 1838354 transitions. [2021-05-22 00:14:46,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-22 00:14:46,958 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-05-22 00:14:46,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:14:48,738 INFO L225 Difference]: With dead ends: 403532 [2021-05-22 00:14:48,738 INFO L226 Difference]: Without dead ends: 386228 [2021-05-22 00:14:48,738 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 453.5ms TimeCoverageRelationStatistics Valid=230, Invalid=1102, Unknown=0, NotChecked=0, Total=1332 [2021-05-22 00:14:52,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386228 states. [2021-05-22 00:14:58,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386228 to 159892. [2021-05-22 00:14:58,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159892 states, 159889 states have (on average 4.7664066946444095) internal successors, (762096), 159891 states have internal predecessors, (762096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:14:59,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159892 states to 159892 states and 762096 transitions. [2021-05-22 00:14:59,867 INFO L78 Accepts]: Start accepts. Automaton has 159892 states and 762096 transitions. Word has length 60 [2021-05-22 00:14:59,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:14:59,867 INFO L482 AbstractCegarLoop]: Abstraction has 159892 states and 762096 transitions. [2021-05-22 00:14:59,867 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:14:59,868 INFO L276 IsEmpty]: Start isEmpty. Operand 159892 states and 762096 transitions. [2021-05-22 00:14:59,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-22 00:14:59,873 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:14:59,873 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:15:00,076 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable77 [2021-05-22 00:15:00,077 INFO L430 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:15:00,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:15:00,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1479281632, now seen corresponding path program 1 times [2021-05-22 00:15:00,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:15:00,077 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452210224] [2021-05-22 00:15:00,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:15:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:15:00,150 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-05-22 00:15:00,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:15:00,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452210224] [2021-05-22 00:15:00,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452210224] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:15:00,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115610356] [2021-05-22 00:15:00,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:15:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:15:00,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-22 00:15:00,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:15:00,476 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:15:00,477 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115610356] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:15:00,477 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:15:00,477 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 21 [2021-05-22 00:15:00,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266283848] [2021-05-22 00:15:00,477 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-22 00:15:00,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:15:00,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-22 00:15:00,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2021-05-22 00:15:00,477 INFO L87 Difference]: Start difference. First operand 159892 states and 762096 transitions. Second operand has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:15:04,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:15:04,467 INFO L93 Difference]: Finished difference Result 290088 states and 1339226 transitions. [2021-05-22 00:15:04,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-22 00:15:04,467 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-05-22 00:15:04,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:15:06,502 INFO L225 Difference]: With dead ends: 290088 [2021-05-22 00:15:06,502 INFO L226 Difference]: Without dead ends: 239680 [2021-05-22 00:15:06,504 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 392.8ms TimeCoverageRelationStatistics Valid=278, Invalid=1128, Unknown=0, NotChecked=0, Total=1406 [2021-05-22 00:15:09,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239680 states. [2021-05-22 00:15:14,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239680 to 163360. [2021-05-22 00:15:14,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163360 states, 163357 states have (on average 4.670543655919245) internal successors, (762966), 163359 states have internal predecessors, (762966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:15:15,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163360 states to 163360 states and 762966 transitions. [2021-05-22 00:15:15,968 INFO L78 Accepts]: Start accepts. Automaton has 163360 states and 762966 transitions. Word has length 66 [2021-05-22 00:15:15,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:15:15,969 INFO L482 AbstractCegarLoop]: Abstraction has 163360 states and 762966 transitions. [2021-05-22 00:15:15,969 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 5.142857142857143) internal successors, (108), 21 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:15:15,969 INFO L276 IsEmpty]: Start isEmpty. Operand 163360 states and 762966 transitions. [2021-05-22 00:15:15,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-05-22 00:15:15,983 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:15:15,983 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:15:16,183 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:15:16,184 INFO L430 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:15:16,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:15:16,184 INFO L82 PathProgramCache]: Analyzing trace with hash 848577072, now seen corresponding path program 1 times [2021-05-22 00:15:16,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:15:16,184 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245416314] [2021-05-22 00:15:16,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:15:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:15:16,265 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-22 00:15:16,265 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:15:16,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245416314] [2021-05-22 00:15:16,265 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245416314] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:15:16,265 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349228806] [2021-05-22 00:15:16,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:15:16,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:15:16,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-22 00:15:16,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:15:16,593 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:15:16,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349228806] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:15:16,593 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:15:16,593 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 26 [2021-05-22 00:15:16,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774905303] [2021-05-22 00:15:16,594 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-22 00:15:16,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:15:16,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-22 00:15:16,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2021-05-22 00:15:16,594 INFO L87 Difference]: Start difference. First operand 163360 states and 762966 transitions. Second operand has 26 states, 26 states have (on average 4.576923076923077) internal successors, (119), 26 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:15:17,858 WARN L205 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2021-05-22 00:15:23,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:15:23,369 INFO L93 Difference]: Finished difference Result 520484 states and 2324720 transitions. [2021-05-22 00:15:23,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-05-22 00:15:23,369 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.576923076923077) internal successors, (119), 26 states have internal predecessors, (119), 0 states have call successors, (0), 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 70 [2021-05-22 00:15:23,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:15:26,702 INFO L225 Difference]: With dead ends: 520484 [2021-05-22 00:15:26,702 INFO L226 Difference]: Without dead ends: 501708 [2021-05-22 00:15:26,703 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1194 ImplicationChecksByTransitivity, 1486.7ms TimeCoverageRelationStatistics Valid=877, Invalid=3815, Unknown=0, NotChecked=0, Total=4692 [2021-05-22 00:15:29,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501708 states. [2021-05-22 00:15:37,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501708 to 158448. [2021-05-22 00:15:37,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158448 states, 158445 states have (on average 4.682621729937833) internal successors, (741938), 158447 states have internal predecessors, (741938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:15:39,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158448 states to 158448 states and 741938 transitions. [2021-05-22 00:15:39,054 INFO L78 Accepts]: Start accepts. Automaton has 158448 states and 741938 transitions. Word has length 70 [2021-05-22 00:15:39,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:15:39,054 INFO L482 AbstractCegarLoop]: Abstraction has 158448 states and 741938 transitions. [2021-05-22 00:15:39,054 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.576923076923077) internal successors, (119), 26 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:15:39,054 INFO L276 IsEmpty]: Start isEmpty. Operand 158448 states and 741938 transitions. [2021-05-22 00:15:39,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-05-22 00:15:39,069 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:15:39,069 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:15:39,269 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable83 [2021-05-22 00:15:39,269 INFO L430 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:15:39,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:15:39,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1388005810, now seen corresponding path program 2 times [2021-05-22 00:15:39,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:15:39,270 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891999919] [2021-05-22 00:15:39,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:15:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:15:39,364 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-22 00:15:39,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:15:39,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891999919] [2021-05-22 00:15:39,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891999919] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:15:39,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512071402] [2021-05-22 00:15:39,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:15:39,463 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-05-22 00:15:39,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:15:39,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-22 00:15:39,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:15:39,719 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-05-22 00:15:39,719 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512071402] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:15:39,719 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-22 00:15:39,719 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 23 [2021-05-22 00:15:39,719 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119473023] [2021-05-22 00:15:39,719 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-22 00:15:39,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:15:39,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-22 00:15:39,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2021-05-22 00:15:39,720 INFO L87 Difference]: Start difference. First operand 158448 states and 741938 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:15:43,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:15:43,411 INFO L93 Difference]: Finished difference Result 358404 states and 1609490 transitions. [2021-05-22 00:15:43,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-22 00:15:43,412 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 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 70 [2021-05-22 00:15:43,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:15:46,742 INFO L225 Difference]: With dead ends: 358404 [2021-05-22 00:15:46,742 INFO L226 Difference]: Without dead ends: 340780 [2021-05-22 00:15:46,742 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 429.1ms TimeCoverageRelationStatistics Valid=230, Invalid=1102, Unknown=0, NotChecked=0, Total=1332 [2021-05-22 00:15:49,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340780 states. [2021-05-22 00:15:56,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340780 to 149888. [2021-05-22 00:15:56,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149888 states, 149885 states have (on average 4.672368816092337) internal successors, (700318), 149887 states have internal predecessors, (700318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:15:58,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149888 states to 149888 states and 700318 transitions. [2021-05-22 00:15:58,311 INFO L78 Accepts]: Start accepts. Automaton has 149888 states and 700318 transitions. Word has length 70 [2021-05-22 00:15:58,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:15:58,311 INFO L482 AbstractCegarLoop]: Abstraction has 149888 states and 700318 transitions. [2021-05-22 00:15:58,311 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:15:58,311 INFO L276 IsEmpty]: Start isEmpty. Operand 149888 states and 700318 transitions. [2021-05-22 00:15:58,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-05-22 00:15:58,325 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:15:58,325 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:15:58,548 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:15:58,549 INFO L430 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:15:58,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:15:58,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1060657690, now seen corresponding path program 1 times [2021-05-22 00:15:58,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:15:58,549 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832459659] [2021-05-22 00:15:58,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:15:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:15:58,639 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:15:58,640 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:15:58,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832459659] [2021-05-22 00:15:58,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832459659] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:15:58,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309531821] [2021-05-22 00:15:58,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:15:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:15:58,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-22 00:15:58,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:15:58,971 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:15:58,972 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309531821] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:15:58,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:15:58,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 26 [2021-05-22 00:15:58,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137149493] [2021-05-22 00:15:58,972 INFO L462 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-22 00:15:58,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:15:58,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-22 00:15:58,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2021-05-22 00:15:58,973 INFO L87 Difference]: Start difference. First operand 149888 states and 700318 transitions. Second operand has 26 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 26 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) [2021-05-22 00:16:01,212 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 15 [2021-05-22 00:16:07,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:16:07,431 INFO L93 Difference]: Finished difference Result 668108 states and 2954658 transitions. [2021-05-22 00:16:07,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-05-22 00:16:07,432 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 26 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 70 [2021-05-22 00:16:07,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:16:11,945 INFO L225 Difference]: With dead ends: 668108 [2021-05-22 00:16:11,946 INFO L226 Difference]: Without dead ends: 609028 [2021-05-22 00:16:11,946 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4998 ImplicationChecksByTransitivity, 2287.7ms TimeCoverageRelationStatistics Valid=2291, Invalid=11989, Unknown=0, NotChecked=0, Total=14280 [2021-05-22 00:16:15,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609028 states. [2021-05-22 00:16:23,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609028 to 155272. [2021-05-22 00:16:23,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155272 states, 155269 states have (on average 4.657555597060585) internal successors, (723174), 155271 states have internal predecessors, (723174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:16:25,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155272 states to 155272 states and 723174 transitions. [2021-05-22 00:16:25,516 INFO L78 Accepts]: Start accepts. Automaton has 155272 states and 723174 transitions. Word has length 70 [2021-05-22 00:16:25,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:16:25,516 INFO L482 AbstractCegarLoop]: Abstraction has 155272 states and 723174 transitions. [2021-05-22 00:16:25,516 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 4.6923076923076925) internal successors, (122), 26 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) [2021-05-22 00:16:25,516 INFO L276 IsEmpty]: Start isEmpty. Operand 155272 states and 723174 transitions. [2021-05-22 00:16:25,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-05-22 00:16:25,529 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:16:25,529 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:16:25,729 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2021-05-22 00:16:25,729 INFO L430 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:16:25,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:16:25,730 INFO L82 PathProgramCache]: Analyzing trace with hash 442367838, now seen corresponding path program 2 times [2021-05-22 00:16:25,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:16:25,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646871481] [2021-05-22 00:16:25,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:16:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:16:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-22 00:16:25,823 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:16:25,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646871481] [2021-05-22 00:16:25,823 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646871481] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:16:25,823 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745279586] [2021-05-22 00:16:25,824 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 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:16:25,926 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-05-22 00:16:25,926 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:16:25,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-22 00:16:25,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:16:26,201 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-05-22 00:16:26,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745279586] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-22 00:16:26,202 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-22 00:16:26,202 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 23 [2021-05-22 00:16:26,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745946636] [2021-05-22 00:16:26,202 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-22 00:16:26,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:16:26,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-22 00:16:26,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2021-05-22 00:16:26,203 INFO L87 Difference]: Start difference. First operand 155272 states and 723174 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:16:29,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:16:29,738 INFO L93 Difference]: Finished difference Result 336740 states and 1505834 transitions. [2021-05-22 00:16:29,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-22 00:16:29,738 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 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 70 [2021-05-22 00:16:29,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:16:32,966 INFO L225 Difference]: With dead ends: 336740 [2021-05-22 00:16:32,966 INFO L226 Difference]: Without dead ends: 317964 [2021-05-22 00:16:32,967 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 470.7ms TimeCoverageRelationStatistics Valid=230, Invalid=1102, Unknown=0, NotChecked=0, Total=1332 [2021-05-22 00:16:36,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317964 states. [2021-05-22 00:16:42,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317964 to 145416. [2021-05-22 00:16:42,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145416 states, 145413 states have (on average 4.657671597450022) internal successors, (677286), 145415 states have internal predecessors, (677286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:16:44,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145416 states to 145416 states and 677286 transitions. [2021-05-22 00:16:44,167 INFO L78 Accepts]: Start accepts. Automaton has 145416 states and 677286 transitions. Word has length 70 [2021-05-22 00:16:44,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:16:44,168 INFO L482 AbstractCegarLoop]: Abstraction has 145416 states and 677286 transitions. [2021-05-22 00:16:44,168 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:16:44,168 INFO L276 IsEmpty]: Start isEmpty. Operand 145416 states and 677286 transitions. [2021-05-22 00:16:44,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-22 00:16:44,240 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:16:44,240 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:16:44,472 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:16:44,473 INFO L430 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:16:44,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:16:44,473 INFO L82 PathProgramCache]: Analyzing trace with hash -818909334, now seen corresponding path program 1 times [2021-05-22 00:16:44,473 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:16:44,473 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284924616] [2021-05-22 00:16:44,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:16:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:16:44,612 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:16:44,612 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:16:44,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284924616] [2021-05-22 00:16:44,612 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284924616] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:16:44,612 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783010990] [2021-05-22 00:16:44,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:16:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:16:44,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-22 00:16:44,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:16:45,015 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:16:45,016 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783010990] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:16:45,016 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:16:45,016 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-05-22 00:16:45,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377957238] [2021-05-22 00:16:45,016 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-22 00:16:45,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:16:45,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-22 00:16:45,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=891, Unknown=0, NotChecked=0, Total=992 [2021-05-22 00:16:45,017 INFO L87 Difference]: Start difference. First operand 145416 states and 677286 transitions. Second operand has 32 states, 32 states have (on average 4.0625) internal successors, (130), 32 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) [2021-05-22 00:16:47,033 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2021-05-22 00:16:49,887 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 17 [2021-05-22 00:16:58,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:16:58,574 INFO L93 Difference]: Finished difference Result 914880 states and 3985626 transitions. [2021-05-22 00:16:58,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 196 states. [2021-05-22 00:16:58,574 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.0625) internal successors, (130), 32 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 74 [2021-05-22 00:16:58,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:17:03,947 INFO L225 Difference]: With dead ends: 914880 [2021-05-22 00:17:03,948 INFO L226 Difference]: Without dead ends: 907608 [2021-05-22 00:17:03,950 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18606 ImplicationChecksByTransitivity, 4278.0ms TimeCoverageRelationStatistics Valid=7110, Invalid=40632, Unknown=0, NotChecked=0, Total=47742 [2021-05-22 00:17:08,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907608 states. [2021-05-22 00:17:21,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907608 to 152280. [2021-05-22 00:17:21,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152280 states, 152277 states have (on average 4.66774365137217) internal successors, (710790), 152279 states have internal predecessors, (710790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:17:23,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152280 states to 152280 states and 710790 transitions. [2021-05-22 00:17:23,134 INFO L78 Accepts]: Start accepts. Automaton has 152280 states and 710790 transitions. Word has length 74 [2021-05-22 00:17:23,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:17:23,134 INFO L482 AbstractCegarLoop]: Abstraction has 152280 states and 710790 transitions. [2021-05-22 00:17:23,134 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.0625) internal successors, (130), 32 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) [2021-05-22 00:17:23,134 INFO L276 IsEmpty]: Start isEmpty. Operand 152280 states and 710790 transitions. [2021-05-22 00:17:23,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-22 00:17:23,159 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:17:23,159 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:17:23,383 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable95 [2021-05-22 00:17:23,384 INFO L430 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:17:23,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:17:23,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1239475080, now seen corresponding path program 2 times [2021-05-22 00:17:23,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:17:23,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139300132] [2021-05-22 00:17:23,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:17:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:17:23,512 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:17:23,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:17:23,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139300132] [2021-05-22 00:17:23,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139300132] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:17:23,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312827306] [2021-05-22 00:17:23,513 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 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:17:23,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-22 00:17:23,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:17:23,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-22 00:17:23,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:17:23,916 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:17:23,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312827306] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:17:23,917 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:17:23,917 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-05-22 00:17:23,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963940666] [2021-05-22 00:17:23,917 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-22 00:17:23,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:17:23,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-22 00:17:23,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=891, Unknown=0, NotChecked=0, Total=992 [2021-05-22 00:17:23,918 INFO L87 Difference]: Start difference. First operand 152280 states and 710790 transitions. Second operand has 32 states, 32 states have (on average 4.0625) internal successors, (130), 32 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) [2021-05-22 00:17:26,020 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 16 [2021-05-22 00:17:37,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:17:37,607 INFO L93 Difference]: Finished difference Result 974698 states and 4251293 transitions. [2021-05-22 00:17:37,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-05-22 00:17:37,607 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.0625) internal successors, (130), 32 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 74 [2021-05-22 00:17:37,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:17:47,479 INFO L225 Difference]: With dead ends: 974698 [2021-05-22 00:17:47,479 INFO L226 Difference]: Without dead ends: 966634 [2021-05-22 00:17:47,481 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17755 ImplicationChecksByTransitivity, 3972.4ms TimeCoverageRelationStatistics Valid=7014, Invalid=38996, Unknown=0, NotChecked=0, Total=46010 [2021-05-22 00:17:54,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966634 states. [2021-05-22 00:18:08,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966634 to 151488. [2021-05-22 00:18:08,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151488 states, 151485 states have (on average 4.671630854540053) internal successors, (707682), 151487 states have internal predecessors, (707682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:18:10,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151488 states to 151488 states and 707682 transitions. [2021-05-22 00:18:10,267 INFO L78 Accepts]: Start accepts. Automaton has 151488 states and 707682 transitions. Word has length 74 [2021-05-22 00:18:10,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:18:10,267 INFO L482 AbstractCegarLoop]: Abstraction has 151488 states and 707682 transitions. [2021-05-22 00:18:10,267 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 32 states, 32 states have (on average 4.0625) internal successors, (130), 32 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) [2021-05-22 00:18:10,268 INFO L276 IsEmpty]: Start isEmpty. Operand 151488 states and 707682 transitions. [2021-05-22 00:18:10,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-22 00:18:10,291 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:18:10,291 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:18:10,492 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:18:10,493 INFO L430 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:18:10,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:18:10,493 INFO L82 PathProgramCache]: Analyzing trace with hash 28216698, now seen corresponding path program 3 times [2021-05-22 00:18:10,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:18:10,493 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884754583] [2021-05-22 00:18:10,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:18:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:18:10,615 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:18:10,615 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:18:10,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884754583] [2021-05-22 00:18:10,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884754583] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:18:10,616 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927493985] [2021-05-22 00:18:10,616 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 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:18:10,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-05-22 00:18:10,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:18:10,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-22 00:18:10,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:18:11,006 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-05-22 00:18:11,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927493985] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:18:11,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:18:11,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 14] total 29 [2021-05-22 00:18:11,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050634653] [2021-05-22 00:18:11,007 INFO L462 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-22 00:18:11,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:18:11,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-22 00:18:11,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=724, Unknown=0, NotChecked=0, Total=812 [2021-05-22 00:18:11,007 INFO L87 Difference]: Start difference. First operand 151488 states and 707682 transitions. Second operand has 29 states, 29 states have (on average 4.275862068965517) internal successors, (124), 29 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:18:17,906 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 16 [2021-05-22 00:18:25,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-22 00:18:25,253 INFO L93 Difference]: Finished difference Result 853116 states and 3719118 transitions. [2021-05-22 00:18:25,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2021-05-22 00:18:25,254 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 4.275862068965517) internal successors, (124), 29 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-05-22 00:18:25,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-22 00:18:29,903 INFO L225 Difference]: With dead ends: 853116 [2021-05-22 00:18:29,904 INFO L226 Difference]: Without dead ends: 828108 [2021-05-22 00:18:29,905 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16855 ImplicationChecksByTransitivity, 5768.4ms TimeCoverageRelationStatistics Valid=5573, Invalid=36247, Unknown=0, NotChecked=0, Total=41820 [2021-05-22 00:18:34,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828108 states. [2021-05-22 00:18:46,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828108 to 149408. [2021-05-22 00:18:46,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149408 states, 149405 states have (on average 4.667782202737525) internal successors, (697390), 149407 states have internal predecessors, (697390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:18:47,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149408 states to 149408 states and 697390 transitions. [2021-05-22 00:18:47,400 INFO L78 Accepts]: Start accepts. Automaton has 149408 states and 697390 transitions. Word has length 74 [2021-05-22 00:18:47,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-22 00:18:47,400 INFO L482 AbstractCegarLoop]: Abstraction has 149408 states and 697390 transitions. [2021-05-22 00:18:47,400 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 4.275862068965517) internal successors, (124), 29 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-22 00:18:47,400 INFO L276 IsEmpty]: Start isEmpty. Operand 149408 states and 697390 transitions. [2021-05-22 00:18:47,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-22 00:18:47,418 INFO L513 BasicCegarLoop]: Found error trace [2021-05-22 00:18:47,418 INFO L521 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-22 00:18:47,618 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable101 [2021-05-22 00:18:47,618 INFO L430 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-22 00:18:47,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-22 00:18:47,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1169717906, now seen corresponding path program 4 times [2021-05-22 00:18:47,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-22 00:18:47,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062562744] [2021-05-22 00:18:47,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-22 00:18:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-22 00:18:47,743 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:18:47,744 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-22 00:18:47,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062562744] [2021-05-22 00:18:47,744 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062562744] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:18:47,744 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383269095] [2021-05-22 00:18:47,744 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 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-22 00:18:48,571 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-22 00:18:48,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-22 00:18:48,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-22 00:18:48,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-22 00:18:48,927 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-22 00:18:48,928 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383269095] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-22 00:18:48,928 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-22 00:18:48,928 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-05-22 00:18:48,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540065763] [2021-05-22 00:18:48,928 INFO L462 AbstractCegarLoop]: Interpolant automaton has 32 states [2021-05-22 00:18:48,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-22 00:18:48,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-05-22 00:18:48,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=892, Unknown=0, NotChecked=0, Total=992 [2021-05-22 00:18:48,929 INFO L87 Difference]: Start difference. First operand 149408 states and 697390 transitions. Second operand has 32 states, 32 states have (on average 4.0625) internal successors, (130), 32 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) Received shutdown request... [2021-05-22 00:18:58,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2021-05-22 00:18:59,074 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable104 [2021-05-22 00:18:59,074 WARN L547 AbstractCegarLoop]: Verification canceled [2021-05-22 00:18:59,074 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT (1/2) [2021-05-22 00:18:59,075 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-05-22 00:18:59,076 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-22 00:18:59,076 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-22 00:18:59,076 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-22 00:18:59,076 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-22 00:18:59,076 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-22 00:18:59,076 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-22 00:18:59,076 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-22 00:18:59,076 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-05-22 00:18:59,077 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 132 places, 120 transitions, 304 flow [2021-05-22 00:18:59,077 WARN L547 AbstractCegarLoop]: Verification canceled [2021-05-22 00:18:59,077 INFO L315 ceAbstractionStarter]: Result for error location InUseError was TIMEOUT (2/2) [2021-05-22 00:18:59,077 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 4 thread instances [2021-05-22 00:18:59,080 WARN L196 ceAbstractionStarter]: Timeout [2021-05-22 00:18:59,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.05 12:18:59 BasicIcfg [2021-05-22 00:18:59,080 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-22 00:18:59,080 INFO L168 Benchmark]: Toolchain (without parser) took 653302.54 ms. Allocated memory was 367.0 MB in the beginning and 16.0 GB in the end (delta: 15.6 GB). Free memory was 329.5 MB in the beginning and 5.6 GB in the end (delta: -5.3 GB). Peak memory consumption was 10.4 GB. Max. memory is 16.0 GB. [2021-05-22 00:18:59,080 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 367.0 MB. Free memory is still 347.9 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-05-22 00:18:59,081 INFO L168 Benchmark]: CACSL2BoogieTranslator took 547.10 ms. Allocated memory is still 367.0 MB. Free memory was 329.3 MB in the beginning and 331.5 MB in the end (delta: -2.2 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. [2021-05-22 00:18:59,081 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.12 ms. Allocated memory is still 367.0 MB. Free memory was 331.5 MB in the beginning and 330.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-22 00:18:59,081 INFO L168 Benchmark]: Boogie Preprocessor took 33.92 ms. Allocated memory is still 367.0 MB. Free memory was 330.4 MB in the beginning and 328.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-22 00:18:59,081 INFO L168 Benchmark]: RCFGBuilder took 441.13 ms. Allocated memory is still 367.0 MB. Free memory was 328.3 MB in the beginning and 306.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2021-05-22 00:18:59,081 INFO L168 Benchmark]: TraceAbstraction took 652216.94 ms. Allocated memory was 367.0 MB in the beginning and 16.0 GB in the end (delta: 15.6 GB). Free memory was 306.3 MB in the beginning and 5.6 GB in the end (delta: -5.3 GB). Peak memory consumption was 10.4 GB. Max. memory is 16.0 GB. [2021-05-22 00:18:59,081 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 367.0 MB. Free memory is still 347.9 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 547.10 ms. Allocated memory is still 367.0 MB. Free memory was 329.3 MB in the beginning and 331.5 MB in the end (delta: -2.2 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 57.12 ms. Allocated memory is still 367.0 MB. Free memory was 331.5 MB in the beginning and 330.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 33.92 ms. Allocated memory is still 367.0 MB. Free memory was 330.4 MB in the beginning and 328.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 441.13 ms. Allocated memory is still 367.0 MB. Free memory was 328.3 MB in the beginning and 306.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 652216.94 ms. Allocated memory was 367.0 MB in the beginning and 16.0 GB in the end (delta: 15.6 GB). Free memory was 306.3 MB in the beginning and 5.6 GB in the end (delta: -5.3 GB). Peak memory consumption was 10.4 GB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 689]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while BasicCegarLoop was constructing difference of abstraction (149408states) and FLOYD_HOARE automaton (currently 143 states, 32 states before enhancement),while ReachableStatesComputation was computing reachable states (695692 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 84 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1270.3ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 19.8ms, AutomataDifference: 518.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 84.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 207 SDtfs, 465 SDslu, 723 SDs, 0 SdLazy, 156 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 133.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 364.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1329occurred in iteration=0, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 64.1ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.5ms SsaConstructionTime, 83.9ms SatisfiabilityAnalysisTime, 383.8ms InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 276 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 100 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6527.7ms, OverallIterations: 5, TraceHistogramMax: 2, EmptinessCheckTime: 30.7ms, AutomataDifference: 2734.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 329.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 754 SDtfs, 2271 SDslu, 4814 SDs, 0 SdLazy, 1436 SolverSat, 91 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 750.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 301 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1318 ImplicationChecksByTransitivity, 2211.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8109occurred in iteration=0, InterpolantAutomatonStates: 97, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 417.6ms AutomataMinimizationTime, 5 MinimizatonAttempts, 1762 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 61.8ms SsaConstructionTime, 118.0ms SatisfiabilityAnalysisTime, 1841.1ms InterpolantComputationTime, 432 NumberOfCodeBlocks, 420 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 424 ConstructedInterpolants, 0 QuantifiedInterpolants, 1843 SizeOfPredicates, 27 NumberOfNonLiveVariables, 417 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 6/30 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 - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 9 procedures, 116 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 58191.6ms, OverallIterations: 19, TraceHistogramMax: 3, EmptinessCheckTime: 215.8ms, AutomataDifference: 30531.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6652.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 5233 SDtfs, 18971 SDslu, 55319 SDs, 0 SdLazy, 18828 SolverSat, 1032 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7155.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2269 GetRequests, 1028 SyntacticMatches, 0 SemanticMatches, 1241 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36869 ImplicationChecksByTransitivity, 20403.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=48789occurred in iteration=0, InterpolantAutomatonStates: 915, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 7376.0ms AutomataMinimizationTime, 19 MinimizatonAttempts, 166746 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 403.6ms SsaConstructionTime, 467.4ms SatisfiabilityAnalysisTime, 7769.5ms InterpolantComputationTime, 2480 NumberOfCodeBlocks, 2385 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 2444 ConstructedInterpolants, 0 QuantifiedInterpolants, 11664 SizeOfPredicates, 191 NumberOfNonLiveVariables, 2709 ConjunctsInSsa, 235 ConjunctsInUnsatCore, 36 InterpolantComputations, 6 PerfectInterpolantSequences, 187/638 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 - StatisticsResult: Ultimate Automizer benchmark data with 4 thread instances CFG has 11 procedures, 132 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 576751.8ms, OverallIterations: 14, TraceHistogramMax: 3, EmptinessCheckTime: 560.0ms, AutomataDifference: 152818.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 239815.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 4817 SDtfs, 20133 SDslu, 55100 SDs, 0 SdLazy, 18914 SolverSat, 1079 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7445.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1939 GetRequests, 701 SyntacticMatches, 0 SemanticMatches, 1238 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71812 ImplicationChecksByTransitivity, 23541.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=292869occurred in iteration=0, InterpolantAutomatonStates: 887, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 174694.5ms AutomataMinimizationTime, 13 MinimizatonAttempts, 4292354 StatesRemovedByMinimization, 12 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 169.1ms SsaConstructionTime, 262.5ms SatisfiabilityAnalysisTime, 4374.9ms InterpolantComputationTime, 1716 NumberOfCodeBlocks, 1648 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1690 ConstructedInterpolants, 0 QuantifiedInterpolants, 8130 SizeOfPredicates, 132 NumberOfNonLiveVariables, 1852 ConjunctsInSsa, 164 ConjunctsInUnsatCore, 26 InterpolantComputations, 5 PerfectInterpolantSequences, 125/390 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 5 procedures, 84 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 117.8ms, OverallIterations: 1, TraceHistogramMax: 2, EmptinessCheckTime: 5.8ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 51.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1329occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.9ms SsaConstructionTime, 14.7ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 7 procedures, 100 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 835.3ms, OverallIterations: 1, TraceHistogramMax: 3, EmptinessCheckTime: 47.5ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 692.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8109occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 22.1ms SsaConstructionTime, 21.4ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 3 thread instances CFG has 9 procedures, 116 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8219.7ms, OverallIterations: 1, TraceHistogramMax: 4, EmptinessCheckTime: 103.6ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8076.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=48789occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0ms SsaConstructionTime, 15.6ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 4 thread instances CFG has 11 procedures, 132 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 1.6ms, OverallIterations: 0, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=-1occurred in iteration=-1, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown